Results 111 to 120 of about 104,934 (214)

Special opportunities in helicopter aerodynamics [PDF]

open access: yes
Aerodynamic research relating to modern helicopters includes the study of three dimensional, unsteady, nonlinear flow fields. A selective review is made of some of the phenomenon that hamper the development of satisfactory engineering prediction ...
Mccroskey, W. J.
core   +1 more source

Analysis of strong-interaction dynamic stall for laminar flow on airfoils [PDF]

open access: yes
A compressible Navier-Stokes solution procedure is applied to the flow about an isolated airfoil. Two major problem areas were investigated. The first area is that of developing a coordinate system and an initial step in this direction has been taken. An
Eiseman, P. R.   +2 more
core   +1 more source

Free-flight wind-tunnel investigation of a four-engine sweptwing upper-surface blown transport configuration [PDF]

open access: yes
The dynamic stability and control characteristics of a four-engine turbofan transport model having an upper-surface blown jet flap were investigated by means of the free-flight technique in the Langley full-scale tunnel. The flight characteristics of the
Parlett, L. P.
core   +1 more source

Combustion-Powered Actuation for Dynamic Stall Suppression - Simulations and Low-Mach Experiments [PDF]

open access: yes
An investigation on dynamic-stall suppression capabilities of combustion-powered actuation (COMPACT) applied to a tabbed VR-12 airfoil is presented. In the first section, results from computational fluid dynamics (CFD) simulations carried out at Mach ...
Bowles, Patrick O.   +7 more
core   +1 more source

Pilot Sensitivity to Simulator Flight Dynamics Model Formulation for Stall Training [PDF]

open access: yes
A piloted simulation study was performed in the Cockpit Motion Facility at the National Aeronautics and Space Administration Langley Research Center. The research was motivated by the desire to reduce the commercial transport airplane fatal accident rate
Cunningham, Kevin   +4 more
core   +1 more source

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