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Analysis of VTOL Handling Qualities Requirements. Part 1. Longitudinal Hover and Transition

1968
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Release : 1968
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Book Synopsis Analysis of VTOL Handling Qualities Requirements. Part 1. Longitudinal Hover and Transition by : Samuel J. Craig

Download or read book Analysis of VTOL Handling Qualities Requirements. Part 1. Longitudinal Hover and Transition written by Samuel J. Craig. This book was released on 1968. Available in PDF, EPUB and Kindle. Book excerpt: Analyses of results from available handling qualities experiments were performed to determine dynamic and control requirements for VTOL aircraft. The basis for this treatment was an examination of the pilot/vehicle as a closed-loop servo system. The quasi-linear pilot describing function has been applied. The results of the studies suggest that the primary factors identifying satisfactory and unacceptable hover mode dynamic features are primarily related to the closed-loop pilot/vehicle system. Preliminary consideration is given to the longitudinal techniques and multiloop control structures suitable for manual control in transition. (Author).

Analysis of VTOL Handling Qualities

1968 Airplanes
Download Analysis of VTOL Handling Qualities PDF Online Free

Author :
Release : 1968
Genre : Airplanes
Kind : eBook
Book Rating : /5 ( reviews)

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Book Synopsis Analysis of VTOL Handling Qualities by : Samuel J. Craig

Download or read book Analysis of VTOL Handling Qualities written by Samuel J. Craig. This book was released on 1968. Available in PDF, EPUB and Kindle. Book excerpt:

Analysis of VTOL Handling Qualities Requirements

1970 Airplanes
Download Analysis of VTOL Handling Qualities Requirements PDF Online Free

Author :
Release : 1970
Genre : Airplanes
Kind : eBook
Book Rating : /5 ( reviews)

GET EBOOK


Book Synopsis Analysis of VTOL Handling Qualities Requirements by :

Download or read book Analysis of VTOL Handling Qualities Requirements written by . This book was released on 1970. Available in PDF, EPUB and Kindle. Book excerpt:

Analysis of VTOL Handling Qualities Requirements

1970 Airplanes
Download Analysis of VTOL Handling Qualities Requirements PDF Online Free

Author :
Release : 1970
Genre : Airplanes
Kind : eBook
Book Rating : /5 ( reviews)

GET EBOOK


Book Synopsis Analysis of VTOL Handling Qualities Requirements by : Samuel J. Craig

Download or read book Analysis of VTOL Handling Qualities Requirements written by Samuel J. Craig. This book was released on 1970. Available in PDF, EPUB and Kindle. Book excerpt: Analyses of available handling qualities data were performed to determine lateral/directional dynamic requirements for VTOL aircraft in hover and low speed flight. The basis for this treatment is an examination of the pilot/vehicle as a closed-loop servo system. The quasi-linear pilot describing function is applied. The results of the studies suggest that the primary factors identifying satisfactory and unacceptable hover mode dynamic features are related to the closed-loop deficiencies. Detailed consideration is made of the control task and piloting functions in transition flight. The results of this generic appraisal are evoked to confirm and justify preliminary lateral/directional requirement for control in transition. (Author).

An Analytical Study of V/STOL Handling Qualities in Hover and Transition

1965 Airplanes
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Author :
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.

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