Aeronautics and astronautics – Aircraft control – Rudders and empennage
Patent
1982-09-30
1985-09-03
Blix, Trygve M.
Aeronautics and astronautics
Aircraft control
Rudders and empennage
244 91, 244 76R, 244225, B64C 510
Patent
active
045387796
ABSTRACT:
An empennage assembly for supersonic aircraft includes longitudinally and rearwardly extending booms (12) mounted upon the wings (16) or fuselage of the aircraft. The booms (12) include aft rotatable sections (22) upon which are mounted larger (18) and smaller (20) tail surfaces. The boom sections (22) are angularly rotated through angular displacements .theta. such that the dispositions of the tail surfaces (18, 20) are interchanged between their dispositions during low subsonic and high supersonic flight conditions. In this manner, the directional and longitudinal aerodynamic static stability components of the aircraft are rendered substantially constant at an optimum low or near-neutral level of stability in order to enhance the flight maneuverability capabilities of the aircraft throughout the subsonic, transonic, and high supersonic speed ranges. The empennage (10) is also advantageously employed for enhancing the directional stability characteristics of all aircraft under varied angle of attack conditions, and still further, can likewise enhance the lift characteristics of STOL aircraft employing vectored thrust. In connection with the use of the present invention empennage system upon supersonic aircraft, the rotational orientation of the empennage system (10) and its associated boom sections (22) is automatically programmed by suitable feed-back control means (23) in response to sensed changes in Mach number. In a similar manner, the rotational orientation of the empennage system (10) and its associated boom sections (22) would also be automatically programmed by the feed-back control means (23) as a function of angle of attack.
REFERENCES:
patent: 2326819 (1943-08-01), Berlin
patent: 2559827 (1951-07-01), Northrop
patent: 2744698 (1956-05-01), Baynes
patent: 2774556 (1956-12-01), Robert
patent: 3260481 (1966-07-01), Winborn
patent: 4247062 (1981-01-01), Brueckner
Blix Trygve M.
Corl Rodney
The Boeing Company
LandOfFree
Caster type empennage assembly for aircraft does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Caster type empennage assembly for aircraft, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Caster type empennage assembly for aircraft will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-609687