Patent US4044237A successfully refreshed from Google Patents.
US4044237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Missile maneuver concept
Assignee: United States Department of the Army
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Filing: 1976-03-16
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Granted: 1977-08-23
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Expires: 1996-03-16
Abstract
Abstract A lifting body missile is controlled by pitch and roll commands wherein theaw autopilot is caused to change in accordance with the roll and estimated angle of attack input information. A command logic is provided to determine the polarity of the command signals to the autopilot.
Inventors
- 👤 Paul N. Cowgill
- 👤 John L. Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:07
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/10; G05D1/107; F; F41; F41G; F41G7/00; F41G7/20; F41G7/30; F41G7/301
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
217 words
A system for controlling a missile having a lifting body configuration comprising a pitch autopilot having an input; a roll autopilot having an input; a yaw autopilot having an input; a pitch polarity switch having an output connected to the pitch autopilot input; logic device having first and second input and an output; an attitude reference device having output which is indicative of the attitude of said missile; pitch control signal connected to an input of said pitch polarity switch; subtractor having two inputs and an output; roll command signal connected to one input of said subtractor; the output of said attitude device being connected to the other input of said subtractor; the output of subtractor being connected to said logic device whereby said logic device will set the polarity of said pitch polarity switch; said logic device further having said second output connected to said roll autopilot; said logic determining the polarity of the signal applied to said roll autopilot; a multiplier having first and second inputs and an output; and estimated angle of attack of said missile vehicle signal being fed into one input of said multiplier; said second output of said logic device being fed to the other input of said multiplier; and said output of said multiplier being connected to said yaw autopilot.
Claim 2
Independent Claim
217 words
A system for controlling a missile having a lifting body configuration comprising a pitch autopilot having an input; a roll autopilot having an input; a yaw autopilot having an input; a pitch polarity switch having an output connected to the pitch autopilot input; logic device having first and second input and an output; an attitude reference device having output which is indicative of the attitude of said missile; pitch control signal connected to an input of said pitch polarity switch; subtractor having two inputs and an output; roll command signal connected to one input of said subtractor; the output of said attitude device being connected to the other input of said subtractor; the output of subtractor being connected to said logic device whereby said logic device will set the polarity of said pitch polarity switch; said logic device further having said second output connected to said roll autopilot; said logic determining the polarity of the signal applied to said roll autopilot; a multiplier having first and second inputs and an output; and estimated angle of attack of said missile vehicle signal being fed into one input of said multiplier; said second output of said logic device being fed to the other input of said multiplier; and said output of said multiplier being connected to said yaw autopilot.
Claim 3
Dependent Claim
23 words
A system as set forth in claim 1 wherein said attitude device has an input thereto fed by body rates of the missile.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-22 | 1981-02-21 | 1981-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-22 | 1985-02-21 | 1985-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-22 | 1989-02-21 | 1989-08-23 | $7700.00 | Window Closed / Lapsed |