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Author :
Release : 1973
Genre : Aeronautics
Kind : eBook
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Book Synopsis V/STOL Handling-qualities Criteria by :
Download or read book V/STOL Handling-qualities Criteria written by . This book was released on 1973. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Seth B. Anderson
Release : 1960
Genre : Flight control
Kind : eBook
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Book Synopsis An Examination of Handling Qualities Criteria for V/STOL Aircraft by : Seth B. Anderson
Download or read book An Examination of Handling Qualities Criteria for V/STOL Aircraft written by Seth B. Anderson. This book was released on 1960. Available in PDF, EPUB and Kindle. Book excerpt: A study has been undertaken to define hand-ling qualities criteria for V/STOL aircraft. With the current military requirements for helicopters and airplanes as a framework, modifications and additions were made for conversion to a preliminary set of V/STOL requirements using a broad background of flight experience and pilots' comments from VTOL and STOL aircraft, BLC (boundary-layer-control) equipped aircraft, variable stability aircraft, flight simulators and landing approach studies. The report contains a discussion of the reasoning behind and the sources of information leading to suggested requirements. The results of the study indicate that the majority of V/STOL requirements can be defined by modifications to the helicopter and/or airplane requirements by appropriate definition of reference speeds. Areas where a requirement is included but where the information is felt to be inadequate to establish a firm quantitative requirement include the following: Control power and damping relationships about all axes for various sizes and types of aircraft; control power, sensitivity, d-amping and response for height control; dynamic longitudinal and dynamic lateral- directional stability in the transition region, including emergency operation; hovering steadiness; acceleration and deceleration in transition; descent rates and flight-path angles in steep approaches, and thrust margin for approach.
Author : ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT PARIS (France)
Release : 1970
Genre :
Kind : eBook
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Book Synopsis V/STOL Handling. I. Criteria and Discussion by : ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT PARIS (France)
Download or read book V/STOL Handling. I. Criteria and Discussion written by ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT PARIS (France). This book was released on 1970. Available in PDF, EPUB and Kindle. Book excerpt: The report presents criteria on handling qualities for VTOL and STOL aircraft. Included with each criterion is a discussion pointing out the pilot's reasons for including a particular handling quality feature. The criteria are based on results of tests using piloted ground-based simulators, variable stability aircraft, particular models of VTOL and STOL aircraft, and variable stability helicopters. (Author).
Author : R. L. Stapleford
Release : 1965
Genre : Airplanes
Kind : eBook
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Book Synopsis An Analytical Study of V/STOL Handling Qualities in Hover and Transition by : R. L. Stapleford
Download or read book An Analytical Study of V/STOL Handling Qualities in Hover and Transition written by R. L. Stapleford. This book was released on 1965. Available in PDF, EPUB and Kindle. Book excerpt: The hover analysis considers pilot attitude and position control tasks in the presence of horizontal gusts. The effects of each of the stability derivatives on the difficulty of the control tasks and on the closed-loop gust responses are determined. It is clearly shown that the handling qualities studies of control sensitivity and angular damping must consider the influences of M sub u (or L sub v) and should include gust inputs. These conclusions are substantiated by previous variable-stability-helicopter experiments. The effects of vehicle size and geometry are investigated by several approaches. The key result of increasing size is found to be a reduction in M sub u and L sub v which can, in turn, lower the requirements for control power and damping. The handling qualities during transition of two vehicles, a tilt duct and a tilt wing, which were previously tested on a simulator are analyzed. It is shown that both trim control and perturbations about the trim conditions must be considered. In fact, part of the increased difficulty in landing transitions, in comparison with takeoff transitions, is due to more difficult trim control; the much more stringent position control requirements in landing are also a contributing factor.
Author : John P. Reeder
Release : 1961
Genre : Aerodynamics
Kind : eBook
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Book Synopsis Handling Qualities Experience with Several VTOL Research Aircraft by : John P. Reeder
Download or read book Handling Qualities Experience with Several VTOL Research Aircraft written by John P. Reeder. This book was released on 1961. Available in PDF, EPUB and Kindle. Book excerpt:
