Effect of casing treatment of overall performance of axial-flow transonic fan stage with pressure ratio of 1.75 and tip solidity of 1.5 [PDF]
The effect of a number of casing treatments on the overall performance of a 1.75-pressure-ratio, 423-m/sec-tip-speed fan stage was evaluated. The skewed slot configuration with short-open slots over the midportion of the rotor had a stall margin of 23.5 ...
Moore, R. D., Osborn, W. M.
core +1 more source
Investigating the cooling effect of the inlet flow on the axial compressor performance in different operating conditions. [PDF]
Sci RepAbbasi S, Salmani M.
europepmc +1 more source
Energy Efficient Engine: Flight propulsion system final design and analysis [PDF]
The Energy Efficient Engine (E3) is a NASA program to create fuel saving technology for future transport engines. The Flight Propulsion System (FPS) is the engine designed to achieve E3 goals.
Davis, Donald Y., Stearns, E. Marshall
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Insights into US life expectancy stagnation from birth cohort mortality dynamics. [PDF]
Proc Natl Acad Sci U S AAbrams L +4 more
europepmc +1 more source
Investigation of the stall-induced shock wave (hammershock) at the inlet to the engine [PDF]
The peak static pressures measured at the inlet to the engine during stall are presented for a turbojet and two turbofan engines. It is shown for one turbofan and the turbojet that the static pressure ratio across the hammershock does not exceed ...
Kurkov, A. P. +2 more
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Enhancement of aerodynamic performance of axial compressors utilizing natural aspiration through optimized casing circumferential slot. [PDF]
Sci RepNejad PG, Zenouz RT.
europepmc +1 more source
Flight investigation of approach and flare from simulated breakout altitude of a subsonic jet transport and comparison with analytical models [PDF]
Satisfactory and optimum flare windows are defined from pilot ratings and comments. Maximum flare normal accelerations, touchdown rates of sink, and total landing maneuver time increments are summarized as a function of approach airspeed margin (with ...
Matheny, N. W.
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A deployable digital twin framework for bolt-torque specification compression in EV chassis assembly. [PDF]
Sci RepWang H +6 more
europepmc +1 more source
Performance with and without inlet radial distortion of a transonic fan stage designed for reduced loading in the tip region [PDF]
A transonic compressor stage designed for a reduced loading in the tip region of the rotor blades was tested with and without inlet radial distortion. The rotor was 50 cm in diameter and designed for an operating tip speed of 420 m/sec.
Ruggeri, R. S., Schmidt, J. F.
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Three-dimensional optimization of squealer-tip for a transonic axial-flow compressor rotor blade. [PDF]
HeliyonHeidarian Shahri M +2 more
europepmc +1 more source