Results 101 to 110 of about 10,092 (210)

Aerodynamic characteristics of a powered tilt-proprotor wind tunnel model [PDF]

open access: yes
An investigation was conducted in the Langley V/STOL tunnel to determine the performance, stability and control, and rotor-wake interaction effects of a powered tilt-proprotor aircraft model with gimbal-hub rotors.
Freeman, C. E.   +2 more
core   +1 more source

Interactional aerodynamics and acoustics of a propeller-augmented compound coaxial helicopter [PDF]

open access: yes, 2008
The aerodynamic and acoustic characteristics of a generic hingeless coaxial helicopter with a tail-mounted propulsor and stabiliser have been simulated using Brown's Vorticity Transport Model.
Brown, Richard   +3 more
core  

On the Fine-Tuning of the Stick-Beam Wing Dynamic Model of a Tiltrotor: A Case Study

open access: yesAerospace
The T-WING project, a CS2-CPW (Clean Sky 2 call for core partner waves) research initiative within FRC IADP (Fast Rotor-Craft Innovative Aircraft Demonstrator Platform), focuses on developing, qualifying and testing the new wing of the Next-Generation ...
Jacopo Beretta   +4 more
doaj   +1 more source

Effect of high lift flap systems on the conceptual design of a 1985 short-haul commercial STOL tilt rotor transport [PDF]

open access: yes
The performances of a derivative concept of a 1985 STOL tilt rotor transport, and of a second concept having a complex mechanical flap system similar to a short field B737 aircraft were compared for a 370 kilometer (200 nautical mile) short haul mission.
Gambucci, B. J., Shovlin, M. D.
core   +1 more source

Neural Network Design and Training for Longitudinal Flight Control of a Tilt-Rotor Hybrid Vertical Takeoff and Landing Unmanned Aerial Vehicle

open access: yesDrones
This paper considers a hybrid vertical take-off and landing (VTOL) unmanned aerial vehicle (UAV). By tilting its propellers, the aircraft can transition from rotary-wing (RW) multirotor mode to fixed-wing (FW) mode and vice versa. A novel architecture of
Guillaume Ducard, Gregorio Carughi
doaj   +1 more source

Civil applications of high-speed rotorcraft and powered-lift aircraft configurations [PDF]

open access: yes
Advanced subsonic vertical and short takeoff and landing (V/STOL) aircraft configurations offer new transportation options for civil applications.
Albers, James A., Zuk, John
core   +1 more source

Towards High-order Methods for Rotorcraft Applications [PDF]

open access: yes, 2017
This work presents CFD results obtained with an efficient, high-order, finite-volume scheme. The formulation is based on the variable extrapolation MUSCL-scheme, and high-order spatial accuracy is achieved using correction terms obtained through ...
Barakos, George N.   +1 more
core  

Open airscrew VTOL concepts [PDF]

open access: yes
The following concepts, based on using open airscrew(s) for VTOL maneuvers, are re-examined in light of current technology: (1) tip-driven helicopters, (2) compound helicopters; and (3) high-speed VTOL aircraft, represented by tiltrotors, tiltwings ...
Stepniewski, W. Z., Tarczynski, T.
core   +1 more source

NASA/HAA Advanced Rotorcraft Technology and Tilt Rotor Workshop. Volume 7: Tilt Rotor Session [PDF]

open access: yes
The technical characteristics of the XV-15 aircraft were discussed. Program objectives, concept evaluation, tilt rotor experiments and civil market applications are presented.

core   +1 more source

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