Results 131 to 140 of about 3,036 (184)
Contributions of Particle Image Velocimetry to Helicopter Aerodynamics: A Review. [PDF]
AIAA J, 2017 Raffel M +5 more
europepmc +1 more source
Aerodynamic Limits on Large Civil Tiltrotor Sizing and Efficiency [PDF]
The NASA Large Civil Tiltrotor (2nd generation, or LCTR2) is a useful reference design for technology impact studies. The present paper takes a broad view of technology assessment by examining the extremes of what aerodynamic improvements might hope to ...
Acree, C W.
core +1 more source
Variable-Speed Simulation of a Dual-Clutch Gearbox Tiltrotor Driveline [PDF]
This investigation explores the variable-speed operation and shift response of a prototypical two-speed dual-clutch transmission tiltrotor driveline in forward flight.
DeSmidt, Hans +3 more
core +1 more source
Design, Dynamics and Development of Upgraded Tiltable Wing associated Quadcopter through Advanced computational simulations incorporated Bottom-Up Approach. [PDF]
Sci RepSaravana Mohan H +9 more
europepmc +1 more source
The California corridor transportation system: A design summary [PDF]
A design group was assembled to find and research criteria relevent to the design of a California Corridor Transportation System. The efforts of this group included defining the problem, conducting a market analysis, formulation of a demand model ...
core +1 more source
Comprehensive rotorcraft analysis methods [PDF]
The development and application of comprehensive rotorcraft analysis methods in the field of rotorcraft technology are described. These large scale analyses and the resulting computer programs are intended to treat the complex aeromechanical phenomena ...
Austin, Edward E., Stephens, Wendell B.
core +1 more source
Aeroelasticity study of tiltrotor concept-whirlflutter
, 2003 In cruise flight, the tiltrotor (VSTOL) is subject to a dynamic aeroelastic instability called whirl flutter. This phenomenon is characterized by whirl movements of the rotor that increase structure load and whose consequences can be fatal. The aim of this study is to set up an analytical model allowing to accurately simulate whirl flutter.
openaire +1 more source
Handling Qualities of Large Rotorcraft in Hover and Low Speed [PDF]
According to a number of system studies, large capacity advanced rotorcraft with a capability of high cruise speeds (approx.350 mph) as well as vertical and/or short take-off and landing (V/STOL) flight could alleviate anticipated air transportation ...
Blanken, Chris L. +3 more
core +1 more source