Loss of control testing of light aircraft and a cost effective approach to flight test [PDF]
, 2010 Copyright @ The Society of Flight Test EngineersLoss of control in Visual Meteorological Conditions (VMC) is the most common cause of fatal accidents involving light aircraft in the UK and probably worldwide.
Bromfield, MA, Gratton, GB
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AerospaceThe aerodynamic performance of transonic compressors, particularly the stall margin, is significantly influenced by inlet distortion. While time-marching methods accurately simulate such unsteady flows, they can be time-consuming.
Lei Wu, Pengcheng Du, Fangfei Ning
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Performance improvements of a highly integrated digital electronic control system for an F-15 airplane [PDF]
The NASA highly integrated digital electronic control (HIDEC) program is structured to conduct flight research into the benefits of integrating an aircraft flight control system with the engine control system.
Andries, M. G. +3 more
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Integrated Flight-propulsion Control Concepts for Supersonic Transport Airplanes [PDF]
Integration of propulsion and flight control systems will provide significant performance improvements for supersonic transport airplanes. Increased engine thrust and reduced fuel consumption can be obtained by controlling engine stall margin as a ...
Burcham, Frank W., Jr. +2 more
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QCGAT aircraft/engine design for reduced noise and emissions [PDF]
, 1980 The high bypass ratio QCGAT engine played an important role in shaping the aircraft design. The aircraft which evolved is a sleek, advanced design, six-place aircraft with 3538 kg (7,800 lb) maximum gross weight. It offers a 2778 kilometer (1500 nautical
Lanson, L., Terrill, K. M.
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Single-stage, low-noise, advanced technology fan. Volume 4: Fan aerodynamics. Section 1: Results and analysis [PDF]
Test results at design speed show fan total pressure ratio, weight flow, and adiabatic efficiency to be 2.2, 2.9, and 1.8% lower than design goal values.
Little, D. R. +2 more
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Experimental evaluation of outer case blowing or bleeding of single stage axial flow compressor. Part 3 - Performance of blowing insert configuration no. 1 [PDF]
Experimental evaluation of outer case blowing or bleeding of single stage axial flow compressor, and performance tests using distorted or undistorted inlet ...
Koch, C. C., Smith, L. H., Jr.
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High pressure compressor component performance report [PDF]
A compressor optimization study defined a 10 stage configuration with a 22.6:1 pressure ratio, an adiabatic efficiency goal of 86.1%, and a polytropic efficiency of 90.6%; the corrected airflow is 53.5 kg/s.
Cline, S. J. +4 more
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Passive casing treatments for stall margin improvement in axial compressors
, 2020 Axial flow compressors are mainly used in the power generation and aerospace industry. Axial compressors are prone to instability issues since it is the nature of compressors to impart work on a fluid across an adverse pressure gradient. Instability in the compressor will instigate rotating stall and ultimately surge within the compression system.
openaire
Stator hub treatment study [PDF]
The results of an experimental research program to investigate the potential of improving compressor stall margin by the application of hub treatment are presented.
Hilvers, D. E., Wisler, D. C.
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