NDLI: A flight investigation of the stability, control, and handling qualities of an augmented jet flap stol airplane

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A flight investigation of the stability, control, and handling qualities of an augmented jet flap stol airplane

Content Provider	NASA Technical Reports Server (NTRS)
Author	Innis, R. C. Swan, B. E. Grossmith, S. W. Vomaske, R. F.
Copyright Year	1978
Description	The stability, control, and handling qualities of an augmented jet flap STOL airplane are presented. The airplane is an extensively modified de Havilland Buffalo military transport. The modified airplane has two fan-jet engines which provide vectorable thrust and compressed air for the augmentor jet flap and Boundary-Layer Control (BLC). The augmentor and BLC air is cross ducted to minimize asymmetric moments produced when one engine is inoperative. The modifications incorporated in the airplane include a Stability Augmentation System (SAS), a powered elevator, and a powered lateral control system. The test gross weight of the airplane was between 165,000 and 209,000 N (37,000 and 47,000 lb). Stability, control, and handling qualities are presented for the airspeed range of 40 to 180 knots. The lateral-directional handling qualities are considered satisfactory for the normal operating range of 65 to 160 knots airspeed when the SAS is functioning. With the SAS inoperative, poor turn coordination and spiral instability are primary deficiencies contributing to marginal handling qualities in the landing approach. The powered elevator control system enhanced the controllability in pitch, particularly in the landing flare and stall recovery.
File Size	4876139
Page Count	151
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19780018208
Archival Resource Key	ark:/13960/t7fr4pf7b
Language	English
Publisher Date	1978-06-01
Access Restriction	Open
Subject Keyword	Aircraft Stability And Control Controllability Pitching Moments Aircraft Stability Jet Flaps Short Takeoff Aircraft Aircraft Control Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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