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The remainder of the Georgia Guidestones are being demolished following the mysterious explosion, that destroyed one of the pillars earlier this morning. https://t.co/SQGilANDDU Source: https://twitter.com/SwaniFiles/status/1544799763001901058 Uploader: Swani Files
Topics: Twitter, video
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Jul 5, 2022 Louis Rossmann
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https://twitter.com/nProctor https://youtu.be/hdd1wuCQ3tY https://thehill.com/blogs/congress-blog/3512830-proposed-repair-bill-goes-too-far/ https://www.congress.gov/bill/117th-congress/house-bill/6566/text?r=4&s=1#:~:text=Introduced%20in%20House%20(02%2F02%2F2022)&text=To%20amend%20title%2017%2C%20United,of%20certain%20digital%20electronic%20equipment.&text=To%20amend%20title%2017%2C%20United,of%20certain%20digital%20electronic%20equipment....
Topics: Youtube, video, Nonprofits & Activism
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Jul 5, 2022 Louis Rossmann
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Post a message on screen: https://bit.ly/postamessage πŸ”΅ We fix Macbooks & offer free estimates. https://rossmanngroup.com πŸ”΅ Send us your Macbook for repair! http://bit.ly/sendmacbook πŸ”΅ We'll send you a box with a pre-paid shipping label for your repair! http://bit.ly/sendyourmacbook πŸ”΅ We offer iPhone data recovery: http://bit.ly/2BDBX4G πŸ”΅ We offer lab hard drive data recovery: http://bit.ly/labdatarecovery https://discord.gg/rossmanngroup πŸ‘‰ LEARN HOW TO DO THIS: β€Ί...
Topics: Youtube, video, Science & Technology
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https://techcrunch.com/2022/06/13/as-celsius-accelerates-the-crypto-sell-off-who-pays-the-price/ https://news.slashdot.org/story/22/06/16/2026246/state-securities-regulators-investigating-celsius-accounts-freeze https://twitter.com/cobie/status/1536174111235489792/photo/2 https://discord.gg/rossmanngroup πŸ”΅ We fix Macbooks & offer free estimates. https://rossmanngroup.com πŸ”΅ Send us your Macbook for repair! http://bit.ly/sendmacbook πŸ”΅ We'll send you a box with a pre-paid shipping...
Topics: Youtube, video, Education, macbook, crypto, scam, celsius
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Jul 5, 2022 Louis Rossmann
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https://discord.gg/rossmanngroup πŸ”΅ We fix Macbooks & offer free estimates. https://rossmanngroup.com πŸ”΅ Send us your Macbook for repair! http://bit.ly/sendmacbook πŸ”΅ We'll send you a box with a pre-paid shipping label for your repair! http://bit.ly/sendyourmacbook πŸ”΅ We offer iPhone data recovery: http://bit.ly/2BDBX4G πŸ”΅ We offer lab hard drive data recovery: http://bit.ly/labdatarecovery πŸ‘‰ LEARN HOW TO DO THIS: β€Ί In-person classes: https://bit.ly/classrg β€Ί Beginner's...
Topics: Youtube, video, Education, self love, change
https://skie.net/skynet/projects/tesla/view_post/23_Explaining+Changes+post-firmware+2019.16+Regarding+Range+Loss https://discord.gg/rossmanngroup πŸ”΅ We fix Macbooks & offer free estimates. https://rossmanngroup.com πŸ”΅ Send us your Macbook for repair! http://bit.ly/sendmacbook πŸ”΅ We'll send you a box with a pre-paid shipping label for your repair! http://bit.ly/sendyourmacbook πŸ”΅ We offer iPhone data recovery: http://bit.ly/2BDBX4G πŸ”΅ We offer lab hard drive data recovery:...
Topics: Youtube, video, Autos & Vehicles, tesla, warranty, battery
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Support the stream: https://streamlabs.com/louisrossmann Post a message on screen http://bit.ly/postamessage Or else I will read it in the normal chat if it is not swamped. I am sorry if I miss your message, I do my best to read as much stuff as I can that is somewhat interesting even if it is a normal unpaid message, but the chat sometimes moves way too fast for me to get things. https://discord.gg/rossmanngroup πŸ‘‰ https://discord.gg/rossmanngroup πŸ‘‰ https://rossmanngroup.com πŸ‘‰...
Topics: Youtube, video, Entertainment, Louis Rossmann, AMA
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https://old.reddit.com/r/ThatsInsane/comments/vgjwd2/line_to_view_a_single_1br_apartment_in_manhattan/ https://rumble.com/v18v724-lower-east-side-walk-everclear-fireball-this-streamk.html https://discord.gg/rossmanngroup πŸ”΅ We fix Macbooks & offer free estimates. https://rossmanngroup.com πŸ”΅ Send us your Macbook for repair! http://bit.ly/sendmacbook πŸ”΅ We'll send you a box with a pre-paid shipping label for your repair! http://bit.ly/sendyourmacbook πŸ”΅ We offer iPhone data recovery:...
Topics: Youtube, video, Education, NYC, apartment, apartment rental
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https://discord.gg/rossmanngroup https://www.youtube.com/watch?v=vQLws5KfntE Source: https://www.youtube.com/watch?v=CHXTP8W_Ndg Uploader: Louis Rossmann
Topics: Youtube, video, Education, framework, right to repair
Social Media Videos
Jul 4, 2022 Buitengebieden
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The rebellion started today.. https://t.co/rGhjHoxUcq Source: https://twitter.com/buitengebieden/status/1543837530327580677 Uploader: Buitengebieden
Topics: Twitter, video
The Godane Inbox
Jul 3, 2022 Global News
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Topics: Global News, cknwam
The Godane Inbox
Jul 3, 2022 Global News
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The Godane Inbox
Jul 3, 2022 Global News
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The Godane Inbox
Jul 3, 2022 Global News
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The Godane Inbox
Jul 3, 2022 Global News
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The Godane Inbox
Jul 3, 2022 Global News
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Topics: Global News, chedam
NASA Network Resource and Training Site
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The Habitable Exoplanet Imager (HabEx) is a space telescope currently in development whose mission includes finding and spectroscopically characterizing exoplanets. Effective high-contrast imaging requires tight stability requirements of the mirrors to prevent issues such as line of sight and wavefront errors. PATRAN and NASTRAN were used to model updates in the design of the HabEx telescope and find how those updates affected stability. Most of the structural modifications increased first mode...
Topics: NASA Technical Reports Server (NTRS), 2883ac233aae4eb9bc8c8117ed53e760, Charlotte, NC, United...
No abstract available
Topics: NASA Technical Reports Server (NTRS), 37a0a31377644008a5f057272b7c5e24,...
Collects space systems cost and related data (flight rate, payload, etc.) over time. Gathers only public data. Non-recurring and recurring. Minimal data processing. Graph, visualize, add context. Focus on US space systems competitiveness. Keep fresh update as data arises, launches occur, etc. Keep fresh focus on recent data, indicative of the future.
Topics: NASA Technical Reports Server (NTRS), NASA Kennedy Space Center, Zapata, Edgar
The Modular Autonomous Systems Technology (MAST) framework is a tool for building distributed, hierarchical autonomous systems. Originally intended for the autonomous monitoring and control of spacecraft, this framework concept provides support for variable autonomy, assume-guarantee contracts, and efficient communication between subsystems and a centralized systems manager. MAST was developed at NASA's Johnson Space Center (JSC) and has been applied to an integrated spacecraft example scenario.
Topics: NASA Technical Reports Server (NTRS), 2402d1a1883d46c5baa0e60f1db316a0, Badger, Julia M., Claunch,...
The unique position of the Deep Space Climate Observatory (DSCOVR) Earth Polychromatic Imaging Camera (EPIC) at the Lagrange 1 point makes an important addition to the data from currently operating low orbit Earth observing instruments. EPIC instrument does not have an onboard calibration facility. One approach to its calibration is to compare EPIC observations to the measurements from polar orbiting radiometers. Moderate Resolution Imaging Spectroradiometer (MODIS) is a natural choice for such...
Topics: NASA Technical Reports Server (NTRS), 526a183eb40b4887b97ac51ee359e3e2, Columbia Univ.,...
The SpatioTemporal Adaptive Resolution Encoding (STARE) is a unifying scheme encoding geospatial and temporal information for organizing data on scalable computing/storage resources, minimizing expensive data transfers. STARE provides a compact representation that turns set-logic functions into integer operations, e.g. conditional sub-setting, taking into account representative spatiotemporal resolutions of the data in the datasets. STARE geo-spatiotemporally aligns data placements of diverse...
Topics: NASA Technical Reports Server (NTRS), c4baf6fc2dca41a5a4a88ba827f45280, Greenbelt, MD, United...
The RapidScat scatterometer was built as a low cost follow-on to the QuikSCAT mission. It flew on the International Space Station (ISS) and provided data from 3 October 2014 to 20 August 2016 and provided surface wind vectors retrieved from surface roughness estimates taken at multiple azimuth angles. These measurements were unique to the historical scatterometer record in that the ISS flies in a low inclination, non-sun-synchronous orbit. Scatterometry-derived wind vectors have been routinely...
Topics: NASA Technical Reports Server (NTRS), 059499511e294b44b2538569f95d833a,...
We provide an introduction to a new high-resolution (0.25 degree) global composition forecast produced by NASA's Global Modeling and Assimilation office. The NASA Goddard Earth Observing System version 5 (GEOS-5) model has been expanded to provide global near-real-time forecasts of atmospheric composition at a horizontal resolution of 0.25 degrees (approximately 25 km). Previously, this combination of detailed chemistry and resolution was only provided by regional models. This system combines...
Topics: NASA Technical Reports Server (NTRS), 0a38c409a8df4c33bf650a123ce520cd,...
The North Pacific summer jet (NPSJ) plays a critical role as a waveguide for weather systems and other sub-seasonal Rossby waves entering North America and therefore has a controlling influence on the warm season weather and climate extremes over much of the continent. In particular, much of the warm season precipitation that occurs over the central United States depends on subseasonal transients that are able to tap moisture from the Gulf of Mexico as they propagate across the continent. The...
Topics: NASA Technical Reports Server (NTRS), 01d70eee0f8b4afdac84d597b3351d17,...
Tropical Africa receives nearly all its precipitation as a result of convection. The characteristics of rain-producing systems in this region, despite their crucial role in regional and global circulation, have not been well-understood. This is mainly due to the lack of in situ observations. Here, we have used precipitation records from the Trans-African Hydro-Meteorological Observatory (TAHMO) to improve our knowledge about the rainfall systems in the region, and to validate the...
Topics: NASA Technical Reports Server (NTRS), 9f14c130952448e0baa52ebfee8ac42e, Dezfuli, Amin,...
NASA Network Resource and Training Site
Jul 3, 2022 NASA Technical Reports Server (NTRS)
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The NASA GMAO (Global Modeling and Assimilation Office) reanalysis blends OCO-2 (Orbiting Carbon Observatory 2) and GOSAT-ACOS (Greenhouse Gases Observing Satellite-Atmospheric Carbon Observations from Space) retrievals (top) with GEOS (Goddard Earth Observing System) model predictions (bottom) to estimate the full 3D (three-dimensional) state of CO2 every 3 hours (middle). This poster describes monthly atmospheric growth rates derived from the reanalysis and an application to aircraft data...
Topics: NASA Technical Reports Server (NTRS), 3232cf7ff48042d991f94ac0dba6a991,...
NASA Network Resource and Training Site
Jul 3, 2022 NASA Technical Reports Server (NTRS)
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Immersion freezing is likely involved in the initiation of precipitation and determines to large extent the phase partitioning in convective clouds. Theoretical models commonly used to describe immersion freezing in atmospheric models are based on the classical nucleation theory which however neglects important interactions near the immersed particle that may affect nucleation rates. This work introduces a new theory of immersion freezing based on two premises. First, immersion ice nucleation...
Topics: NASA Technical Reports Server (NTRS), Barahona, Donifan, NASA Goddard Space Flight Center
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Jul 3, 2022 NASA Technical Reports Server (NTRS)
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NASA invests in professional coaching as a way to accelerate the development of its staff. The speaker shares one foundational human development model in coaching - the Six Streams - and applies it to the challenges that new scientists face. The speaker also describes how a new scientist can develop greater capabilities in the Six Streams so that they can become a more effective scientist and feel more satisfaction with their work.
Topics: NASA Technical Reports Server (NTRS), NASA Ames Research Center, Sun, Sidney
NASA Network Resource and Training Site
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The objective of this project is to develop a compact, high sensitivity Raman sensor for detection of life signatures in a flow cell configuration to enable bio-exploration and life detection during future mission to our Solar Systems Icy Worlds. The specific project objectives are the following: 1) Develop a Raman spectroscopy liquid analysis sensor for biosignatures; 2) Demonstrate applicability towards a future Enceladus or other Icy Worlds missions; 3) Establish key parameters for...
Topics: NASA Technical Reports Server (NTRS), 4187bbb3e80c473db59ee9adfbf9b804,...
NASA Network Resource and Training Site
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Electrochemical detection of biological molecules is a pertinent topic and application in many fields such as medicine, environmental spills, and life detection in space. Proteases, a class of molecules of interest in the search for life, catalyze the hydrolysis of peptides. Trypsin, a specific protease, was chosen to investigate an optimized enzyme detection system using electrochemistry. This study aims at providing the ideal functionalization of an electrode that can reliably detect a signal...
Topics: NASA Technical Reports Server (NTRS), 1fc5a7747b124cddb4c0339cbd9fc6f3,...
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Jul 3, 2022 NASA Technical Reports Server (NTRS)
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All forms of life on Earth contain cellular machinery that can transform and regulate chemical energy through metabolic pathways. These processes are oxidation-reduction reactions that are performed by four key classes of molecules: flavins, nicotinamaides, porphyrins, and quinones. By detecting the electrochemical interaction of these redox-active molecules with an electrode, a method of differentiating them by their class could be established and incorporated into future life-detecting...
Topics: NASA Technical Reports Server (NTRS), 619e09243ebb47ebbc9f018941dbcab4, Australia,...
This paper investigates propsective architectures for decision-making in unmanned aerial systems. When these unmanned vehicles operate in urban environments, there are several sources of uncertainty that affect their behavior, and decision-making algorithms need to be robust to account for these different sources of uncertainty. It is important to account for several risk-factors that affect the flight of these unmanned systems, and facilitate decision-making by taking into consideration these...
Topics: NASA Technical Reports Server (NTRS), 7dc84c5bd68e46c29f8307aca6fbb394, Moffett Field, CA, United...
NASA Network Resource and Training Site
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The Human Systems Integration Division focuses on the design and operations of complex aerospace systems through analysis, experimentation and modeling. With over a dozen labs and over 120 people, the division conducts research to improve safety, efficiency and mission success. Areas of investigation include applied vision research which will be discussed during this seminar.
Topics: NASA Technical Reports Server (NTRS), McCandless, Jeffrey, NASA Ames Research Center
Habitation systems provide a safe place for astronauts to live and work in space and on planetary surfaces. They enable crews to live and work safely in deep space, and include integrated life support systems, radiation protection, fire safety, and systems to reduce logistics and the need for resupply missions. Innovative health management technologies are needed in order to increase the safety and mission-effectiveness for future space habitats on other planets, asteroids, or lunar surfaces....
Topics: NASA Technical Reports Server (NTRS), Martin, Rodney A., NASA Ames Research Center
NASA Network Resource and Training Site
Jul 3, 2022 NASA Technical Reports Server (NTRS)
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NTTS is the IT infrastructure for the Agency's Technology Transfer (T2) program containing 60,000+ technology portfolio supporting all ten NASA field centers and HQ. It is the enterprise IT system for facilitating the Agency's technology transfer process, which includes reporting of new technologies (e.g., technology invention disclosures NF1679), protecting intellectual properties (e.g., patents), and commercializing technologies through various technology licenses, software releases,...
Topics: NASA Technical Reports Server (NTRS), 6e07bca5a4be44cf9c6d29148044368e, Moffett Field, CA, United...
NASA Network Resource and Training Site
Jul 3, 2022 NASA Technical Reports Server (NTRS)
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The Kepler spacecraft was repurposed for the K2 mission a year after the failure of the second of Kepler's four reaction wheels in 2013 May. The purpose of this document, the K2 Handbook (K2H), is to describe features of K2 operations, performance, data analysis, and archive products which are common to most K2 campaigns, but different in degree or kind from the corresponding features of the Kepler mission.The K2 Handbook is meant to be read with the following companion documents, which are all...
Topics: NASA Technical Reports Server (NTRS), a2cac8af2d9d44d7aedcf0120e663916, Bryson, Steve, Moffett...
The experience acquired through development, implementation and operation of the KeplerK2 science pipelines can provide lessons learned for the development of science pipelines for other missions such as NASA's Transiting Exoplanet Survey Satellite, and ESA's PLATO mission.
Topics: NASA Technical Reports Server (NTRS), Jenkins, Jon M., NASA Ames Research Center
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Jul 3, 2022 NASA Technical Reports Server (NTRS)
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Two transit survey missions will have been flown by NASA prior to the launch of ESA's PLATO Mission in 2026, laying the groundwork for exoplanet discovery via the transit method. The Kepler Mission, which launched in 2009, collected data on its 100+ square degree field of view for four years before failure of a reaction wheel ended its primary mission. The results from Kepler include 2300+ confirmed or validated exoplanets, 2200+ planetary candidates, 2100+ eclipsing binaries. Kepler also...
Topics: NASA Technical Reports Server (NTRS), Jenkins, Jon M., NASA Ames Research Center
This work presents an approach to modeling the dynamic spreading and curing behavior of thermosets in nozzle-based extrusions. Thermosets cover a wide range of materials, some of which permit low-temperature processing with subsequent high-temperature and high-strength working properties. Extruding thermosets may overcome the limited working temperatures and strengths of conventional thermoplastic materials used in additive manufacturing. This project aims to produce technology for the...
Topics: NASA Technical Reports Server (NTRS), 4ceb4a40dca2465cae67df866f6c76ee,...
This project describes resistance-based soft sensors filled with liquid metal, which permit measurements of large strains (0 percent to 110 percent), associated with small forces of less than 30 Newtons. This work also demonstrates a methodology for wireless transfer of these strain measurements without connected electrodes. These sensors allow intermittent detection of pressure on soft membranes with low force. Adapting these sensors for passive wireless pressure sensing will eliminate the...
Topics: NASA Technical Reports Server (NTRS), 1a9d51fcfd4643929627eae0996cc313,...
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Interest in passive wireless sensing has grown over the past few decades to meet demands in structural health monitoring.(Deivasigamani et al., 2013; Wilson and Juarez, 2014) This work describes a passive wireless sensor for monitoring strain, which does not have an embedded battery or chip. Without an embedded battery, the passive wireless sensor has the potential to maintain its functionality over long periods in remote/harsh environments. This work also focuses on monitoring small strain...
Topics: NASA Technical Reports Server (NTRS), 21c4df027d3e42ea8409be7c42a764f5,...
A recent NASA team, chartered to examine innovation within the Agency, captured the meaning of the word innovation as the \"application of creative ideas to improve and generate value for the organization\". The former NASA Administrator Charles Bolden shared his own thoughts about innovation in a memo with all employees that stated, \"At NASA, we are dedicated to innovation, bold ideas, and excellence.\" Innovation turns out to be one of the major driving forces behind the...
Topics: NASA Technical Reports Server (NTRS), NASA Marshall Space Flight Center, Turner, James E.
The building of a spacecraft is complex and often involves multiple suppliers and companies that have their own designs and processes. Standards have been developed across the industries to reduce the chances for critical flight errors at the system level, but the spacecraft is still vulnerable to the introduction of critical errors during integration of these systems. Critical errors can occur at any time during the process and in many cases, human reliability analysis (HRA) identifies human...
Topics: NASA Technical Reports Server (NTRS), Bastion Technologies, Inc., Young, Aaron
No abstract available
Topics: NASA Technical Reports Server (NTRS), 283e25af5f2d4955b1a1af56d17b23ec, Bastion Technologies, Inc.,...
In reliability analysis for space launch vehicles, limited data is frequently a challenge due to the pure number of launches. A common solution is to use surrogate historical data of similar components from other industries (military data). The operating environment of the common data may be different from that of the necessary target analysis. The military electronic design handbook (MIL-HDBK-338) has a table for converting Mean Time Between Failure (MTBF) data from one environment to another....
Topics: NASA Technical Reports Server (NTRS), 453d17bf131f4bcc9633eb65a7960536, Bastion Technologies, Inc.,...
NASA Network Resource and Training Site
Jul 3, 2022 NASA Technical Reports Server (NTRS)
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Solid rockets are of interest to the space program because they are commonly used as boosters that provide the additional thrust needed for the space launch vehicle to escape the gravitational pull of the Earth. Larger, more advanced solid rockets allow for space launch vehicles with larger payload capacities, enabling mankind to reach new depths of space. This presentation will discuss, in detail, the history of solid rockets. The history begins with the invention and origin of the solid...
Topics: NASA Technical Reports Server (NTRS), Bastion Technologies, Inc., Green, Rebecca
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Jul 3, 2022 NASA Technical Reports Server (NTRS)
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No abstract available
Topics: NASA Technical Reports Server (NTRS), 7ddb1ec2087b4da7a07b2b972061c7fa,...
NASA Network Resource and Training Site
Jul 3, 2022 NASA Technical Reports Server (NTRS)
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Within seconds after liftoff of the Space Shuttle during mission STS-114, a turkey vulture impacted the vehicle's external tank. The contact caused no apparent damage to the shuttle, but the incident led NASA to consider the potential consequences of bird strikes during a shuttle launch. The environment at Kennedy Space Center provides unique bird strike challenges due to the Merritt Island National Wildlife Refuge and the Atlantic Flyway bird migration routes. This presentation will outline an...
Topics: NASA Technical Reports Server (NTRS), Bastion Technologies, Inc., ccbcae8e58124bf580782be682cb0407,...
No abstract available
Topics: NASA Technical Reports Server (NTRS), Al Hassan, Mohammad, b2d4891f7dfe48d7a342c15d5aca4f7d,...
\"Uncertainty analysis itself is uncertain, therefore, you cannot evaluate it exactly,\" Source Uncertain. Quantitative results for aerospace engineering problems are influenced by many sources of uncertainty. Uncertainty analysis aims to make a technical contribution to decision-making through the quantification of uncertainties in the relevant variables as well as through the propagation of these uncertainties up to the result. Uncertainty can be thought of as a measure of the...
Topics: NASA Technical Reports Server (NTRS), 3119caf4d5ca48fe953dfbabd77a32aa,...
NASA Network Resource and Training Site
Jul 3, 2022 NASA Technical Reports Server (NTRS)
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No abstract available
Topics: NASA Technical Reports Server (NTRS), 45ebfc547c7341d18fc0adf56a0e7eee,...
NASA Network Resource and Training Site
Jul 3, 2022 NASA Technical Reports Server (NTRS)
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No abstract available
Topics: NASA Technical Reports Server (NTRS), Bastion Technologies, Inc., Harden, Adam
No abstract available
Topics: NASA Technical Reports Server (NTRS), Bastion Technologies, Inc., c991361390514e3496472a72b179a5ad,...
Field Programmable Gate Arrays (FPGAs) integrated circuits (IC) are one of the key electronic components in today's sophisticated launch and space vehicle complex avionic systems, largely due to their superb reprogrammable and reconfigurable capabilities combined with relatively low non-recurring engineering costs (NRE) and short design cycle. Consequently, FPGAs are prevalent ICs in communication protocols and control signal commands. This paper will identify reliability concerns and high...
Topics: NASA Technical Reports Server (NTRS), 6832f946d80f44c49b11b7f4c607d9a0,...
No abstract available
Topics: NASA Technical Reports Server (NTRS), 872e344d369745db944b3dfe787f0c8e, Al Hassan, Mohammad,...
No abstract available
Topics: NASA Technical Reports Server (NTRS), 07418cabde944fefbcf3fbe94af7a358, Bastion Technologies, Inc.,...
NASA Network Resource and Training Site
Jul 3, 2022 NASA Technical Reports Server (NTRS)
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No abstract available
Topics: NASA Technical Reports Server (NTRS), 24d08c439eef4cb598d08a6b3cb5c90e,...
In reliability analysis, especially for launch vehicles, limited data is frequently a problem. Component data from other environments must be used. MIL-HBK-338 has a matrix showing the conversation between environments. Due to round off the conversions are not commutative, converting from A to B will not equal converting from B to A. Agenda: Introduction to environment conversions; Original table; Original table with edits; How big is the problem?; First attempt at correction; Proposed solution.
Topics: NASA Technical Reports Server (NTRS), 150b5e8d44c94726b78b30e3a9728382, Bastion Technologies, Inc.,...
NASA Network Resource and Training Site
Jul 3, 2022 NASA Technical Reports Server (NTRS)
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An overview of activities of the CCSDS (Consultative Committee for Space Data Systems) USLP (Unified Space Data Link Protocol) implementation.
Topics: NASA Technical Reports Server (NTRS), Deutsches Zentrum fuer Luft- und Raumfahrt (DLR), Pitts, Lee
NASA Network Resource and Training Site
Jul 3, 2022 NASA Technical Reports Server (NTRS)
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Solid rockets were created by accident and their design and uses have evolved over time. Solid rockets are more simple and reliable than liquid rockets, but they have reduced performance capability. All solid rockets have a similar set of failure modes.
Topics: NASA Technical Reports Server (NTRS), b490967a836c4bb7b61f1eeebab93f63, Bastion Technologies, Inc.,...
NASA Network Resource and Training Site
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No abstract available
Topics: NASA Technical Reports Server (NTRS), NASA Marshall Space Flight Center, Young, Roy
NASA Network Resource and Training Site
Jul 3, 2022 NASA Technical Reports Server (NTRS)
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No abstract available
Topics: NASA Technical Reports Server (NTRS), NASA Marshall Space Flight Center, Young, Roy
NASA Network Resource and Training Site
Jul 3, 2022 NASA Technical Reports Server (NTRS)
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No abstract available
Topics: NASA Technical Reports Server (NTRS), Bhat, Biliyar N., NASA Marshall Space Flight Center
No abstract available
Topics: NASA Technical Reports Server (NTRS), NASA Marshall Space Flight Center, Wells, Doug
No abstract available
Topics: NASA Technical Reports Server (NTRS), NASA Marshall Space Flight Center, Wells, Doug
No abstract available
Topics: NASA Technical Reports Server (NTRS), 11a72d3893dc4898b1f35a05e08d7cb8,...
NASA Network Resource and Training Site
Jul 3, 2022 NASA Technical Reports Server (NTRS)
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Since 2012, the Advanced EVA Development team has been maturing the design for an exploration suit (xEMU) capable of supporting Deep Space Gateway missions with the goal of demonstrating the core system architecture (xEMU Lite) on ISS by the mid-2020s. This presentation will provide a high-level status on progress made since the 2016 EVA Workshop, an overview of the xEMU architecture, and a summary of new development milestones and decision points between now and 2024.
Topics: NASA Technical Reports Server (NTRS), NASA Johnson Space Center, Rodriggs, Liana
A global, satellite-based, terrestrial snow mission planning tool is proposed to help inform experimental mission design with relevance to snow depth and snow water equivalent (SWE). The idea leverages the capabilities of NASA's Land Information System (LIS) and the Tradespace Analysis Tool for Constellations (TAT-C) to harness the information content of Earth science mission data across a suite of hypothetical sensor designs, orbital configurations, data assimilation algorithms, and...
Topics: NASA Technical Reports Server (NTRS), Bay Area Environmental Research Inst.,...
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Jul 3, 2022 NASA Technical Reports Server (NTRS)
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Given the limited observing time and demanding scenarios of the WFIRST coronagraph instrument (CGI), it is critical to consider how Subaru observations can benefit its observing program. Subaru telescope has a suite of instruments with their adaptive optics (AO) and extreme adaptive optics modules (SCExAO). With SCExAO, the Subaru telescope is capable of detection and spectral characterization of binaries and bright (greater than 5(exp -6) contrast) companions in the near-infrared. This will...
Topics: NASA Technical Reports Server (NTRS), Groff, Tyler D., NASA Goddard Space Flight Center
No abstract available
Topics: NASA Technical Reports Server (NTRS), 28505d5b6c764f1c8790ddbcf35f59a7,...
Systems engineering involves both the integration of the system and the integration of the disciplines which develop and operate the system. Integrating the disciplines is a sociological effort to bring together different groups, who often have different terminology, to achieve a common goal, the system. The focus for the systems engineer is information flow through the organization, between the disciplines, to ensure the system is developed and operated will all relevant information informing...
Topics: NASA Technical Reports Server (NTRS), 25e9eb2496da4a249a111e6db96cdcda,...
No abstract available
Topics: NASA Technical Reports Server (NTRS), a6202dbf61b04f698eb9f4075ed2c8fe,...
Systems engineering involves both the integration of the system and the integration of the disciplines which develop and operate the system. Integrating the disciplines is a sociological effort to bring together different groups, often with different terminology, to achieve a common goal, the system. The focus for the systems engineer is information flow through the organization, between the disciplines, to ensure the system is developed and operated with all relevant information informing...
Topics: NASA Technical Reports Server (NTRS), 2af5c7eafc5c48a8b94208d7475357d4,...
The inductive pulsed plasma thruster (IPPT) is an electromagnetic plasma accelerator that has been identified in NASA roadmaps as an enabling propulsion technology for some niche low-power missions and for high-power in-space propulsion needs. The IPPT is an electrodeless space propulsion device where a capacitor is charged to an initial voltage and then discharged producing a high current pulse through a coil. The field produced by this pulse ionizes propellant, inductively driving current in...
Topics: NASA Technical Reports Server (NTRS), 79a0677f7ec147989bd02b25be3abffd,...
CUBESATS are relatively new spacecraft platforms that are typically deployed from a launch vehicle as a secondary payload, providing low-cost access to space for a wide range of end-users. These satellites are comprised of building blocks having dimensions of 10x10x10 cm3 and a mass of 1.33 kg (a 1-U size). While providing low-cost access to space, a major operational limitation is the lack of a propulsion system that can fit within a CubeSat and is capable of executing high Delta V maneuvers....
Topics: NASA Technical Reports Server (NTRS), 0a158ceb96104e58849dbed0a5126e93,...
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Electric Sail (E-Sail) propulsion systems will enable scientific spacecraft to obtain velocities of up to 10 astronomical units per year without expending any on-board propellant. The E-Sail propulsion is created from the interaction of a spacecraft's positively charged multi-kilometer-length conductor/s with protons that are present in the naturally occurring hypersonic solar wind. The protons are deflected via natural electrostatic repulsion forces from the Debye sheath that is formed around...
Topics: NASA Technical Reports Server (NTRS), NASA Marshall Space Flight Center, Wiegmann, Bruce. M.
Simulations of the directional solidification of two hypoeutectic alloys (Al-7Si alloy and Al-19Cu) and resulting macrosegregation patterns are presented. The casting geometries include abrupt changes in cross-section from a larger width of 9.5 mm to a narrower 3.2 mm width then through an expansion back to a width of 9.5 mm. The alloys were chosen as model alloys because they have similar solidification shrinkages, but the effect of Cu on changing the density of the liquid alloy is about an...
Topics: NASA Technical Reports Server (NTRS), 169a758bef374965b3508b0737406d9f,...
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One persistent difficulty in evaluating the myriad advanced propulsion concepts proposed over the last 60 years is a true apples to apples comparison of the expected gain in performance. This analysis is complicated by numerous factors including, multiple missions of interest to the advanced propulsion community, the lack of a credible closed form solution to 'medium thrust' trajectories, and lack of detailed design data for most proposed concepts that lend credibility to engine performance...
Topics: NASA Technical Reports Server (NTRS), Adams, Robert B., NASA Marshall Space Flight Center
NASA's Near Earth Asteroid Scout (NEA Scout) solar sail mission will fly by and image an asteroid. The team has experience characterizing the sail forces and torques used in guidance, navigation, and control to meet the scientific objectives. Interstellar and precursor sail missions similarly require understanding of beam riding dynamics to follow sufficiently accurate trajectories to perform their missions. Objective: Identify the driving factors required to implement a guidance and control...
Topics: NASA Technical Reports Server (NTRS), 68b3d18a2a0f4f8da262c7b647b94f6c, Diedrich, Benjamin, Heaton,...
\"Uncertainty analysis itself is uncertain, therefore, you cannot evaluate it exactly,\" Source Uncertain Quantitative results for aerospace engineering problems are influenced by many sources of uncertainty. Uncertainty analysis aims to make a technical contribution to decision-making through the quantification of uncertainties in the relevant variables as well as through the propagation of these uncertainties up to the result. Uncertainty can be thought of as a measure of the...
Topics: NASA Technical Reports Server (NTRS), 9f080d04339047b3933c2200f8c492c7, Al Hassan, Mohammad,...
Today's launch vehicles complex electronic and avionic systems heavily utilize the Field Programmable Gate Array (FPGA) integrated circuit (IC). FPGAs are prevalent ICs in communication protocols such as MIL-STD-1553B, and in control signal commands such as in solenoid/servo valves actuations. This paper will demonstrate guidelines to estimate FPGA failure rates for a launch vehicle, the guidelines will account for hardware, firmware, and radiation induced failures. The hardware contribution of...
Topics: NASA Technical Reports Server (NTRS), 2d72fb0b4f1c40ab981e94a4edcac83a,...
As NASA's new Space Launch System (SLS) launch vehicle continues to mature toward its first flight and beyond, so too do the agency's plans for utilization of the rocket. Substantial progress has been made toward the production of the vehicle for the first flight of SLS - an initial \"Block 1\" configuration capable of delivering more than 70 metric tons (t) to Low Earth Orbit (LEO). That vehicle will be used for an uncrewed integrated test flight, propelling NASA's Orion spacecraft...
Topics: NASA Technical Reports Server (NTRS), 66601dc38c9546ed99588ddbf8328a05, Huntsville, AL, United...
Burns et al. (1979) use the parameter beta to describe the ratio of radiation pressure to gravity for a particle in the Solar System. The central potential that these particles experience is effectively reduced by a factor of (1- beta ), which in turn lowers the escape velocity. Burns et al. (1979) derived a simple expression for the value of beta at which particles ejected from a comet follow parabolic orbits and thus leave the Solar System; we expand on this to derive an expression for...
Topics: NASA Technical Reports Server (NTRS), Moorhead, Althea V., NASA Marshall Space Flight Center
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There is a strong need for developing multifunctional materials to reduce the cost of applied material without compromising the performance of the detectors, devices and sensors. The materials design, processing, growth and fabrication of bulk and nanocrystals and fabrication into devices and sensors involve huge cost and resources including a multidisciplinary team of experts. Because of this reason, prediction of multifunctionality of materials before design and development should be...
Topics: NASA Technical Reports Server (NTRS), 4e91d8daa3224fbf8bc09ecffef19666,...
The Al-Si material system is an important and has been studied for over half century with a focus on industrial applications in high strength and high conductivity alloys. A great deal of researches have been focused on controlling the morphology and hence performance through the addition of small impurities and by processing conditions. Most of the structure-property correlations are based on the post solidified micromorphology and growth conditions. This material system is unique and has been...
Topics: NASA Technical Reports Server (NTRS), 2d103458298f41978c8aa40aa98d830a,...
Computed tomography (CT) inspection was performed on test articles additively manufactured from metallic materials. Metallic AM and machined wrought alloy test articles with programmed flaws and geometric features were inspected using a 2-megavolt linear accelerator based CT system. Performance of CT inspection on identically configured wrought and AM components and programmed flaws was assessed to determine the impact of additive manufacturing on inspectability of objects with complex...
Topics: NASA Technical Reports Server (NTRS), Beshears, Ronald D., NASA Marshall Space Flight Center
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The first ever live downlink of Ultra-High Definition (UHD) video from the International Space Station (ISS) was the highlight of a 'Super Session' at the National Association of Broadcasters (NAB) in April 2017. The Ultra-High Definition video downlink from the ISS all the way to the Las Vegas Convention Center required considerable planning, pushed the limits of conventional video distribution from a space-craft, and was the first use of High Efficiency Video Coding (HEVC) from a space-craft....
Topics: NASA Technical Reports Server (NTRS), e8a95c62c7064eafbb574a0abffff251, George, Sandy, Grubbs,...
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Jul 3, 2022 NASA Technical Reports Server (NTRS)
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This study investigates the efficiency of a new method of powering remote sensors by the means of wireless energy transfer. The increased use of sensors for data collection comes with the inherent cost of supplying power from sources such as power cables or batteries. Wireless energy transfer technology eliminates the need for power cables or periodic battery replacement. The time and cost of setting up or expanding a sensor network will be reduced while allowing sensors to be placed in areas...
Topics: NASA Technical Reports Server (NTRS), 03fc8acff7664283a0be2ae906119f55,...
The Smartphone Video Guidance Sensor (SVGS) is a miniature, self-contained autonomous rendezvous and docking sensor developed using a commercial off the shelf Android-based smartphone. It aims to provide a miniaturized solution for rendezvous and docking, enabling small satellites to conduct proximity operations and formation flying while minimizing interference with a primary payload. Previously, the sensor was limited by a slow (2 Hz) refresh rate and its use of retro-reflectors, both of...
Topics: NASA Technical Reports Server (NTRS), Carter, Christopher, Georgia Tech
Advanced Environmental Control and Life Support System (ECLSS) design is critical for manned space flight beyond Earth. Current systems enable extended missions in low-Earth orbit, but for deep-space missions, not only will astronauts be outside the reach of resupply operations from Earth but they will also need to handle malfunctions and compensate for the degradation of materials. These two daunting challenges must be overcome for long-term independent space flight. In order to solve the...
Topics: NASA Technical Reports Server (NTRS), 06be2ac4efe84f9e95693cb50984e13b, Cmarik, Gregory E.,...
Human space exploration to date has been limited to low Earth orbit and the moon. The International Space Station (ISS) provides a unique opportunity for NASA to partner with private industry for development and demonstration of the technologies needed to support exploration initiatives. One challenge that is critical to sustainable and safer exploration is the ability to manufacture and recycle materials in space. This paper provides an overview of NASA's in-space manufacturing (ISM) project,...
Topics: NASA Technical Reports Server (NTRS), 083d66577ac1494688860a25b6c6ddae,...
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Aboard the International Space Station, CO2 is removed from the cabin atmosphere by a four-bed molecular sieve (4BMS) process called the Carbon Dioxide Removal Assembly (CDRA).1 This 4BMS process operates by passing the CO2-laden air through a desiccant bed to remove any humidity and then passing the dried air through a sorbent bed to remove the CO2. While one pair of beds is in use, the other pair is thermally regenerated to allow for continuous CO2 removal.
Topics: NASA Technical Reports Server (NTRS), 377680162b054bfd89959aecb2221c3c,...
No abstract available
Topics: NASA Technical Reports Server (NTRS), 88e13c3a41ad4c3e8f2f260ac84346d8, Cmarik, Gregory E.,...
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Jul 3, 2022 NASA Technical Reports Server (NTRS)
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The Space Launch System (SLS) ascent aeroacoustic environments provide the externally driven noise levels predicted for vehicle ascent during transonic and supersonic flight, and serve as an important input for component and secondary structure vibroacoustic design criteria. This aerodynamically induced noise is predominantly generated by unsteady flow within the local boundary layer due to free stream interaction with the outer mold line (OML). Additional sources are shear flow interactions,...
Topics: NASA Technical Reports Server (NTRS), 7cba63eb95cd4d28a2d6b31e45a2a3e6, Herron, Andrew, Huntsville,...
Today's launch vehicles complex electronic and avionics systems heavily utilize Field Programmable Gate Array (FPGA) integrated circuits (IC) for their superb speed and reconfiguration capabilities. Consequently, FPGAs are prevalent ICs in communication protocols such as MILSTD- 1553B and in control signal commands such as in solenoid valve actuations. This paper will identify reliability concerns and high level guidelines to estimate FPGA total failure rates in a launch vehicle application....
Topics: NASA Technical Reports Server (NTRS), 07b22ee6ac0047818206e095f501339a,...
No abstract available
Topics: NASA Technical Reports Server (NTRS), 5842ee5c45804deeade6d1049da209a4,...
The Space Launch System (SLS) vehicle is part of NASA's deep space exploration plans that includes manned missions to Mars. Manufacturing uncertainties in design parameters are key considerations throughout SLS development as they have significant effects on focus parameters such as lift-off-thrust-to-weight, vehicle payload, maximum dynamic pressure, and compression loads. This presentation discusses how the SLS program captures these uncertainties by utilizing a 3 degree of freedom (DOF)...
Topics: NASA Technical Reports Server (NTRS), f4bfbc475470472aa584c5650adc2e48, Huntsville, AL, United...
No abstract available
Topics: NASA Technical Reports Server (NTRS), 0592df7542b9496d87ade7e2c42bee49, Al Hassan, Mohammad,...
Quantitative results for aerospace engineering problems are influenced by many sources of uncertainty. Uncertainty analysis aims to make a technical contribution to decision-making through the quantification of uncertainties in the relevant variables as well as through the propagation of these uncertainties up to the result. Uncertainty can be thought of as a measure of the 'goodness' of a result and is typically represented as statistical dispersion. This paper will explain common measures of...
Topics: NASA Technical Reports Server (NTRS), 49fad1338e6a4e6985f40a9441c30050,...