Results 81 to 90 of about 13,806 (183)

Design of a Symmetrical Quad-rotor Biplane Tail-Sitter Aircraft without Control Surfaces and Experimental Verification

open access: yesMATEC Web of Conferences, 2018
This paper presents the design of a symmetrical quad-rotor biplane tail-sitter VTOL UAV (Vertical Take-off and Landing Unmanned Aerial Vehicle) which is composed of four rotors and two symmetrically mounted fixed wings.
Wang Hongyu   +5 more
doaj   +1 more source

The Use of Unmanned Aerial Systems in Marine Mammal Research

open access: yesRemote Sensing, 2017
Unmanned aerial systems (UAS), commonly referred to as drones, are finding applications in several ecological research areas since remotely piloted aircraft (RPA) technology has ceased to be a military prerogative.
Lorenzo Fiori   +4 more
doaj   +1 more source

Feasibility of V/STOL concepts for short-haul transport aircraft [PDF]

open access: yes
Feasibility of V/STOL concepts for short-haul transport ...
Fry, B. L., Zabinsky, J. M.
core   +1 more source

Control optimization, stabilization and computer algorithms for aircraft applications [PDF]

open access: yes
The analysis and design of complex multivariable reliable control systems are considered. High performance and fault tolerant aircraft systems are the objectives.
Athans, M., Willsky, A. S.
core   +1 more source

Optimization-Based Control for a Large-Scale Electrical Vertical Take-Off and Landing during an Aircraft’s Vertical Take-Off and Landing Phase with Variable-Pitch Propellers

open access: yesDrones
The UAV industry has witnessed an unprecedented boom in recent years. Among various kinds of UAV platforms, the vertical take-off and landing (VTOL) aircraft with fixed-wing configurations has received more and more attention due to its flexibility and ...
Luyuhang Duan   +5 more
doaj   +1 more source

Motion cue effects on pilot tracking [PDF]

open access: yes
The results of two successive experimental investigations of the effects of motion cues on manual control tracking tasks are reported. The first of these was an IFR single-axis VTOL roll attitude control task.
Ringland, R. F., Stapleford, R. L.
core   +1 more source

Saturation Resolving Control AllocationDesign for an Over-actuated VTOL Drone

open access: yesHavacılık ve Uzay Teknolojileri Dergisi
Vertical take-off landing (VTOL) drones have been widely used in recent years, and many unique configurations have emerged thanks to their design flexibility. Some of these are over-actuated systems.
Emre Can Suiçmez
doaj  

Introduction to the arcopter arc wing and the Bertelsen effect for positive pitch stability and control [PDF]

open access: yes
A brief report, offered on a wing design, new in geometry, construction, and flight characteristics. Preliminary wind tunnel data on a three-dimensional model was well as some full-scale man-carrying test results are included.
Bertelsen, W. D.
core   +1 more source

Longitudinal aerodynamics of a low-wing lift-fan transport including hover characteristics in and out of ground effect [PDF]

open access: yes
A wind-tunnel investigation was conducted in the Langley V/STOL tunnel to determine the longitudinal aerodynamic characteristics of a six-fan, tip-driven (remote) lift-fan VTOL transport throughout transition.
Gentry, G. L., Jr., Hoad, D. R.
core   +1 more source

A Flight Evaluation of a VTOL Jet Transport Under Visual and Simulated Instrument Conditions [PDF]

open access: yes
Transition, approach, and vertical landing tests for VTOL transport in terminal ...
Holzhauser, C. A.   +3 more
core   +1 more source

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