Results 131 to 140 of about 217,272 (213)
Basic Studies in Space Vehicle Attitude Control Tenth Semiannual Status Report, Period Ending Jun. 1966 [PDF]
Nonlinear optimal control of planet-pointing space vehicle, basic methods for attitude control, and satellite orbit ...
Cannon, R. H., Jr., Flugge-Lotz, I.
core +1 more source
Quarterly Journal of the Royal Meteorological Society, EarlyView.During July 2021 there were widespread reports of flooding across the equatorial Maritime Continent. This analysis reveals how interactions between a system of convectively coupled Kelvin waves (CCKWs) and diurnally phase‐locked westward‐propagating inertio‐gravity waves during an active Madden–Julian Oscillation (MJO) caused these extreme rainfall ...
Natasha V. Senior +7 more
wiley +1 more source
Pterodactyl: Development and Comparison of Control Architectures for a Mechanically Deployed Entry Vehicle [PDF]
The Pterodactyl project, seeks to advance the current state-of-the-art for entry vehicles by developing novel guidance and control technologies for Deployable Entry Vehicles (DEVs) that can be applied to various entry vehicle configurations.
Barton, Jeffrey D. +3 more
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Risk, Hazards &Crisis in Public Policy, EarlyView.Abstract Near‐earth orbits are becoming congested because of a rapid growth in the number of satellites and space debris, which presents a real threat to the sustainable use of space and the safety of the Earth. Despite space scientists and public policymakers having been actively seeking solutions for decades, solving the problem has been put off ...
Anna Ya Ni +2 more
wiley +1 more source
Fail-safe system for activity cooled supersonic and hypersonic aircraft [PDF]
A fail-safe-system concept was studied as an alternative to a redundant active cooling system for supersonic and hypersonic aircraft which use the heat sink of liquid-hydrogen fuel for cooling the aircraft structure.
Braswell, D. O. +2 more
core +1 more source
Advancing the mapping of vegetation structure in savannas using Sentinel‐1 imagery
Remote Sensing in Ecology and Conservation, EarlyView.As vegetation structure monitoring is important for the understanding and conservation of savanna ecosystems, we explored the utility of C‐band synthetic aperture radar imagery for mapping both grassland and woody vegetation structure in the Greater Serengeti‐Mara Ecosystem.
Vera Thijssen +3 more
wiley +1 more source
This note investigates the effect of high altitude or low atmospheric pressure upon the operation of an engine and the effect of the low pressure and lack of oxygen and of the very low temperatures upon the pilot and upon the performance of the airplane ...
Carroll, Thomas, King, Paul B
core +1 more source
Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2019 P. Calderano +5 more
semanticscholar +1 more source
Rotor systems research aircraft: Fixed-wing simulations results [PDF]
The setup, validation, and results of the Rotor Systems Research Aircraft (RSRA) fixed-wing, moving-base simulation performed in May 1983 are covered. The emphasis of the simulation was to familiarize the pilots with the RSRA's fixed-wing configuration ...
Kufeld, R. M.
core +1 more source
Space Economy and Sustainability: A Systematic Review
Sustainable Development, EarlyView.ABSTRACT The space economy is booming thanks to the increasing investment of government agencies, private companies, and venture capitalists. From the beginning of the New Space era, the array of actors involved in the development of technologies for extra‐terrestrial activities has increased, as well as the downstream applications that foster ...
Marianna Valente +2 more
wiley +1 more source