Small business innovation research. Abstracts of completed 1987 phase 1 projects [PDF]
Non-proprietary summaries of Phase 1 Small Business Innovation Research (SBIR) projects supported by NASA in the 1987 program year are given. Work in the areas of aeronautical propulsion, aerodynamics, acoustics, aircraft systems, materials and ...
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Conceptual Design of a Hydrogen-Hybrid Dual-Fuel Regional Aircraft Retrofit
AerospaceA wide range of aircraft propulsion technologies is being investigated in current research to reduce the environmental impact of commercial aviation.
Ulrich Carsten Johannes Rischmüller +3 more
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Distributed Electric Propulsion Aircraft Simulating a Single Propeller Aircraft
, 2021 It is disclosed a distributed electric propulsion fixed-wing aircraft comprising a plurality of propulsive units, wherein propulsive units are arranged symmetrically with respect to the longitudinal plane, wherein of propulsive units comprises first propulsive units at a first side of the longitudinal plane and second propulsive units at a second side ...
Trainelli, L. +5 more
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Flight experience with the decelerating noise abatement approach [PDF]
The noise of older aircraft can be reduced in two principal ways: retrofitting the aircraft with a quiet propulsion system, and changing the flight operational procedures used in flying the aircraft. The former approach has already proved to be expensive,
Putman, T. W.
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Analysis and evaluation of an integrated laminar flow control propulsion system [PDF]
Reduction of drag has been a major goal of the aircraft industry as no other single quantity influences the operating costs of transport aircraft more than aerodynamic drag. It has been estimated that even modest reduction of frictional drag could reduce
Dewitt, Kenneth J., Keith, Theo G., Jr.
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Influence of the shock wave-turbulence interaction on the swirl distortion in hypersonic inlet
Advances in AerodynamicsThis study uses the Large Eddy Simulation (LES) technique to conduct an exhaustive analysis of the flow characteristics within the Rectangular-to-Elliptical shape Transition (REST) inlet under Mach 6 conditions.
Zhenlong Wu +4 more
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Preliminary Design of Regional Aircraft—Integration of a Fuel Cell-Electric Energy Network in SUAVE
AerospaceTo enable climate-neutral aviation, improving the energy efficiency of aircraft is essential. The research project Synergies of Highly Integrated Transport Aircraft investigates cross-disciplinary synergies in aircraft and propulsion technologies to ...
Jakob Schlittenhardt +4 more
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Methods for comparative evaluation of propulsion system designs for supersonic aircraft [PDF]
The propulsion system comparative evaluation study was conducted to define a rapid, approximate method for evaluating the effects of propulsion system changes for an advanced supersonic cruise airplane, and to verify the approximate method by comparing ...
Chaloff, D. +5 more
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Propulsion Study for Small Transport Aircraft Technology (STAT) [PDF]
Propulsion requirements were determined for 0.5 and 0.7 Mach aircraft. Sensitivity studies were conducted on both these aircraft to determine parametrically the influence of propulsion characteristics on aircraft size and direct operating cost (DOC ...
Earle, R. V. +5 more
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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 +4 more
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