Accession Number : AD0700900

Title :   AUTOMATIC STABILIZATION FOR V/STOL AIRCRAFT IN THE VERTICAL FLIGHT MODE.

Descriptive Note : Master's thesis,

Corporate Author : DENVER UNIV COLO COLL OF ENGINEERING

Personal Author(s) : Buechler,Ralph Lee

Report Date : DEC 1969

Pagination or Media Count : 76

Abstract : Postulating a simple descriptive aircraft transfer function for non-aerodynamic, slow speed flight, a control method is presented for the automatic stabilization of large, lift-fan Vertical and Short Take-off and Landing (V/STOL) aircraft flying in the vertical flight mode. Dead-zone (bang-bang) control is employed, and the entire scheme is time optimal in the sense that the origin is obtained as fast as possible following exit from a dead-zone region and is fuel conservative in the sense that small deviations within this dead-zone are tolerated, causing no fuel to be burned. Although the method is not limited to any particular aircraft transfer function or disturbance shape, it is used to calculate the approximate reaction jet control power needed to control the momentum transfer to the aircraft created by a discrete gust under a maximum roll deflection criterion. (Author)

Descriptors :   (*VERTICAL TAKEOFF AIRCRAFT, FLIGHT CONTROL SYSTEMS), (*SHORT TAKEOFF AIRCRAFT, FLIGHT CONTROL SYSTEMS), (*FLIGHT CONTROL SYSTEMS, STABILIZATION SYSTEMS), GUSTS, LIFT, OPTIMIZATION, POWER, GUST LOADS, THESES

Subject Categories : V/STOL

Distribution Statement : APPROVED FOR PUBLIC RELEASE