The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 29, 1995
Filed:
Aug. 26, 1992
Raymond D Gilbert, Springfield, VA (US);
Other;
Abstract
Spoilers on the forward top and bottom elevator tail surface of large aircraft offer an independent backup for pitch control. The placement of spoilers in a line along the forward portion of an aircraft pitch-control structure offers direct upward or downward 'lift' from a spoiler-induced unbalance of Bernoulli forces on a near-symmetrical airfoil. Combined with a temporary bypass valve and channels between the 'up' and 'down' hydraulic actuators, a spoiler's forward-mounted torsion force on the elevator surfaces can also rotate the elevators in a controlled fashion. Preparation for hi-risk aircraft missions would install gate-spoiler surfaces into spoiler-actuating subsystems as a temporary safety-of-flight hedge against the loss of hydraulic elevator control.