Aeronautics and astronautics – Aircraft control – Stabilizing weights
Reexamination Certificate
2006-12-22
2011-12-13
Dinh, Tien (Department: 3644)
Aeronautics and astronautics
Aircraft control
Stabilizing weights
C244S087000, C244S089000, C244S09000B
Reexamination Certificate
active
08074926
ABSTRACT:
An improvement and method for improved structural dynamic stability for 20 and 30 Series Learjets are disclosed. The improvement includes a redistribution of the elevator mass balance to uncouple the elevator rotational motion from the stabilizer translation motion for the higher order horizontal frequencies having node lines in the proximity of the mass outboard counterbalance weights. The original tail section includes a rudder, and a horizontal stabilizer supporting an elevator mounted adjacent the rudder. The elevator includes a proximal end adjacent the rudder and a distal end that includes a counterbalance portion. The improvement includes replacement of an original mass counterbalance weight from within the counterbalance portion with a new mass counterbalance weight of less mass, and the inclusion of additional mass counterbalance weights disposed within the elevator and interposed between the proximal end and the counterbalance portion.
REFERENCES:
patent: 1992157 (1935-02-01), Hall
patent: 2859925 (1958-11-01), Jacques
patent: 2930550 (1960-03-01), Strang
patent: 3119469 (1964-01-01), Farr et al.
patent: 3229934 (1966-01-01), Vogtle
patent: 4428550 (1984-01-01), Evans et al.
patent: 5159865 (1992-11-01), Hinckley
patent: 2002/0166219 (2002-11-01), David et al.
Bonzell Philip J
Burgess Calvin
Dinh Tien
Dooley Daniel P.
Fellers , Snider, et al.
LandOfFree
Structural dynamic stability for an 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 Structural dynamic stability for an aircraft, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Structural dynamic stability for an aircraft will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4260445