Results 91 to 100 of about 6,732 (195)
Dynamic model and control of a new quadrotor unmanned aerial vehicle with tilt-wing mechanism [PDF]
, 2008 In this work a dynamic model of a new quadrotor aerial vehicle that is equipped with a tilt-wing mechanism is presented. The vehicle has the capabilities of vertical take-off/landing (VTOL) like a helicopter and flying horizontal like an airplane ...
Aksit, Mahmut Faruk +11 more
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Emerging aerospace technologies [PDF]
The United States Government has a long history of promoting the advancement of technology to strengthen the economy and national defense. An example is NASA, which was formed in 1958 to establish and maintain U.S. space technology leadership.
Ballhaus, W. F., Jr., Milov, L. A.
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LQR and SMC stabilization of a new unmanned aerial vehicle [PDF]
, 2009 We present our ongoing work on the development of a new quadrotor aerial vehicle which has a tilt-wing mechanism. The vehicle is capable of take-off/landing in vertical flight mode (VTOL) and flying over long distances in horizontal flight mode.
Ayken, Taylan +10 more
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Flow visualization and flow field measurements of a 1/12 scale tilt rotor aircraft in hover [PDF]
The results are given of flow visualization studies and inflow velocity field measurements performed on a 1/12 scale model of the XV-15 tilt rotor aircraft in the hover mode.
Coffen, Charles D. +3 more
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International Journal of Advanced Robotic SystemsTilt-rotor unmanned aircraft vehicle has the potential to combine vertical take-off and landing capability with efficient, high-speed cruise flight. However, the mode transition process is risky owing to the internal continuous time change of aerodynamic
Hongyu Nie, Feng Gu, Yuqing He
doaj +1 more source
Rotor/wing aerodynamic interactions in hover [PDF]
An experimental and theoretical investigation of rotor/wing aerodynamic interactions in hover is described. The experimental investigation consisted of both a large-scale and small-scale test.
Felker, F. F., Light, J. S.
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Benefits of VTOL aircraft in offshore petroleum logistics support [PDF]
The mission suitability and potential economic benefits of advanced VTOL aircraft were investigated for logistics support of petroleum operations in the North Sea and the Gulf of Mexico.
Shovlin, M. D., Wilcox, D. E.
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Control Allocation of a Tilting Rotor Hexacopter
, 2017 The ”Voliro” system developed during a one-year student project at ETH Zurich, is a novel concept of a rotary-wing UAV, designed as a multicopter with a classical planar configuration, whereby the thrust motors can be tilted around their axes. This allows the system to decouple position and orientation as well as move omnidirectionally. This bachelor
openaire +2 more sources
Dynamic structural aeroelastic stability testing of the XV-15 tilt rotor research aircraft [PDF]
For the past 20 years, a significant effort has been made to understand and predict the structural aeroelastic stability characteristics of the tilt rotor concept.
Schroers, L. G.
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Wind tunnel test on a 1/4.622 Froude scale, hingeless rotor, tilt rotor model, volume 1 [PDF]
Wing tunnel test data on a 1/4.622 Froude scale, hingeless rotor, tilt rotor mode are reported for all potential flight conditions through hover and a wide envelope of transitions.
Alexander, H. R., Magee, J. P.
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