Results 161 to 170 of about 542,371 (346)

Feasibility of Electrified Propulsion for Ultra-Efficient Commercial Aircraft Final Report [PDF]

MIT, Aurora Flight Sciences, and USC have collaborated to assess the feasibility of electric, hybridelectric, and turbo-electric propulsion for ultra-efficient commercial transportation.
Byahut, S., Courtin, C., Dowdle, A.P., Gonzalez, J.J., Greitzer, E.M., Hall, D.K., Hoburg, W.W., Kruger, M., Lang, J.H., Sabnis, J.S., Spakovszky, Z.S., Thalheimer, W., Trollinger, L., Tylko, J., Uranga, A., Varney, N., Yutko, B.   +16 more
core   +1 more source

High-speed Civil Transport Aircraft Emissions [PDF]

, 1992
Estimates are given for the emissions from a proposed high speed civil transport (HSCT). This advanced technology supersonic aircraft would fly in the lower stratosphere at a speed of roughly Mach 1.6 to 3.2 (470 to 950 m/sec or 920 to 1850 knots ...
Albers, Martin, Dodds, Willard J., Gerstle, John H., Hasel, K. L., Hourmouziadis, J., Krause, F. H., Lohmann, R. P., Matulaitis, J. A., Miake-Lye, Richard C., Stander, C.   +9 more
core   +1 more source

Women in space: A review of known physiological adaptations and health perspectives

Experimental Physiology, EarlyView.
Abstract Exposure to the spaceflight environment causes adaptations in most human physiological systems, many of which are thought to affect women differently from men. Since only 11.5% of astronauts worldwide have been female, these issues are largely understudied.
Millie Hughes‐Fulford, Danielle J. Carroll, Heather C. M. Allaway, Bonnie J. Dunbar, Aenor J. Sawyer   +4 more
wiley   +1 more source

A Study on the Development of Criteria for Certification of the Military Aircraft applied Electric Propulsion System

, 2021
Sang Soo Park, Se-Un Kim, Jun‐Mo Yang
openalex   +1 more source

Analysis of control concepts for gas and shaft-coupled V/STOL aircraft lift fan systems [PDF]

For lift-fan powered V/STOL aircraft, two unconventional propulsion system types were proposed. The first type uses fans connected by hot gas ducting, and the second type uses fans connected by cross shafting.
Hart, C. E., Mihaloew, J. R., Sellers, J. F.   +2 more
core   +1 more source

Jumping on the moon as a potential exercise countermeasure

Experimental Physiology, EarlyView.
Abstract The Moon's gravitational field strength (17% Earth's gravity) may facilitate the use of bodyweight jumping as an exercise countermeasure against musculoskeletal and cardiovascular deconditioning in reduced gravity settings. The present study characterised the acute physiological and kinetic responses to bodyweight jumping in simulated Lunar ...
Patrick Swain, Filipa Santos, Luke Hughes, Dan Gordon, Nick Caplan   +4 more
wiley   +1 more source

Rotorcraft convertible engine study [PDF]

The objective of the Rotorcraft Convertible Engine Study was to define future research and technology effort required for commercial development by 1988 of convertible fan/shaft gas turbine engines for unconventional rotorcraft transports. Two rotorcraft
Earle, R. V., Gill, J. C., Mar, H. M.
core   +1 more source

Hypogravity simulation using the Variable Gravity Suspension System: A technical report

Experimental Physiology, EarlyView.
Abstract Human movement has evolved within Earth's gravitational environment (1 g; −9.81 m s−2). Future human exploration of terrestrial bodies, including the Moon (0.17 g; −1.62 m s−2) and Mars (0.38 g; −3.71 m s−2), will require astronauts to live and work within reduced gravitational environments (hypogravity).
Patrick Swain, Anthony Swain, Filipa Santos, Luke Hughes, Kirsty Lindsay, Ishbel Lomax, Claire Bruce‐Martin, Nick Caplan   +7 more
wiley   +1 more source

Distributed Hybrid Electric Propulsion Aircraft Design Based on Convex Optimized Power Allocation Management [PDF]

Lingfei Xiao, Yushuo Tan, Xiaole Zhang, Zirui Han   +3 more
openalex   +1 more source

The Horizon: A blended wing aircraft configuration design project, volume 3 [PDF]

The results of a study to design a High-Speed Civilian Transport (HSCT) using the blended wing-body configuration are presented. The HSCT is a Mach 2 to 5 transport aircraft designed to compete with current commercial aircraft. The subjects discussed are
Freeman, Darnon, Gonda, Mark, Hsu, Yul, Keidel, Paul, Kim, Jay   +4 more
core   +1 more source