Results 71 to 80 of about 2,332 (184)

Research on Unsteady Aerodynamic Interference for the Tiltrotor Aircraft in Hover

open access: yesHangkong gongcheng jinzhan, 2019
The high resolution numerical simulation for rotor/wing-body interaction flow-field in hover is crucial for the accurate prediction of aerodynamic performance of the tilt-rotor aircraft, and is the one of the important issues of helicopter aerodynamics ...
Sun Kaijun   +3 more
doaj   +1 more source

Analysis of the influence of transition state control strategy on structural load of quad-tiltrotor

open access: yesHangkong gongcheng jinzhan
There are complex structural load changes in the rotor during the tilt-transition of quad-tiltrotor aircraft,which can directly affect the life of the rotor.
HE Yongtao   +3 more
doaj   +1 more source

Civil tiltrotor missions and applications. Phase 2: The commercial passenger market [PDF]

open access: yes
The commercial passenger market for the civil tiltrotor was examined in phase 2. A market responsive commercial tiltrotor was found to be technically feasible, and a significant worldwide market potential was found to exist for such an aircraft ...
Alexander, H.   +6 more
core   +1 more source

Design, Modeling, and Control of a Composite Tilt-Rotor Unmanned Aerial Vehicle

open access: yesDrones
Tilt-rotor unmanned aerial vehicles combine the advantages of multirotor and fixed-wing aircraft, offering features like rapid takeoff and landing, extended endurance, and wide flight conditions.
Zhuang Liang   +3 more
doaj   +1 more source

Aircraft technology opportunities for the 21st Century [PDF]

open access: yes
New aircraft technologies are presented that have the potential to expand the air transportation system and reduce congestion through new operating capabilities, and at the same time provide greater levels of safety and environmental compatibility.
Albers, James A., Zuk, John
core   +1 more source

Regional Air Transport in Europe: The Potential Role of the Civil Tiltrotor in Reducing Airside Congestion [PDF]

open access: yes, 2006
The volume of air traffic worldwide is still in constant growth despite unfair events that sometimes occur. The demand for regional air transport is also increasing, thanks in part to the use of new vehicles purposely designed for short range flights ...
Capri, Salvatore   +3 more
core   +1 more source

Airfoil Optimization of Tiltrotor Aircraft Forward Flight Mode Based on Isight

open access: yesHangkong gongcheng jinzhan, 2019
As one of the main development trends of the next generation rotor-crafts, it is of important significance to study the aerodynamic optimization design of its wings for improving the flight performance of tiltrotor aircraft.NACA2412 is employed as the ...
Zhao Guang   +4 more
doaj   +1 more source

Aerodynamic Optimization Design of the Rotor Blade of a Tilt-rotor Aircraft

open access: yesHangkong gongcheng jinzhan, 2019
The aerodynamic design of tilt-rotor needs to synthetically consider the different requirements in helicopter mode and fixed-wing aircraft mode. The multi-objective genetic algorithm based on Kriging surrogate model is used to establish an optimization ...
Sun Kaijun   +3 more
doaj   +1 more source

Impacts of technology on the capacity needs of the US national airspace system [PDF]

open access: yes
A review of the U.S. air transportation system is undertaken, focusing on airspace and airport capacity. Causes of delay and congestion are investigated. Aircraft noise is identified as the fundamental hindrance to capacity improvement.
Ausrotas, Raymond A., Simpson, Robert W.
core   +1 more source

A comparative analysis of XV-15 tiltrotor hover test data and WOPWOP predictions incorporating the fountain effect [PDF]

open access: yes
Acoustic measurements from a hovering full scale XV-15 tilt rotor with the advanced technology blades are presented which show the directionality of fountain effect noise.
Coffen, Charles D.   +2 more
core   +1 more source

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