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:
Mar. 03, 1987
Filed:
Feb. 18, 1986
William C Cleveland, Jr, Santa Ana, CA (US);
Ford Aerospace & Communications Corporation, Detroit, MI (US);
Abstract
A coil (21) mounted inside a spinning guided object (20) has an electrical current (i) induced therewithin by means of interaction with the earth's magnetic field (B). A similar coil (22) mounted on the launch platform spins at the same rate (W) as the object's coil (21), although these two coils (22, 21) are not necessarily in phase. Apparatus (35) associated with the launch platform generates a constant phase signal (P) having amplitude and sign representing the phase difference between the signal generated by the launch platform's coil (22) and the vertical direction. This phase information (P) is used to correct the guidance commands sent from the launch platform to the guided object (20), or, alternatively, is fed directly to the guided object (20) for correction by said object's on-board computer. A hold fire indicator (33) is provided to inform the operator when the output from the launch platform's coil (22) is above or below a predetermined level sufficient for adequate roll angle compensation.