US3241792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Programmed angle of attack control system for aircraft
Assignee: Collins Radio Co
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Filing: 1964-01-23
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Granted: 1966-03-22
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Expires: 1984-01-23
Abstract
No abstract record available.
Inventors
- 👤 Edwin R Hattendorf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:04
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/04; G05D1/06; G05D1/0607; G05D1/0615; G05D1/0623
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
AN AUTOMATIC CONTROL SYSTEM FOR AIRCRAFT VERTICAL GUIDANCE WHEREBY AIRCRAFT PITCH ATTITUDE IS CONTROLLED TO MAINTAIN AIRCRAFT ANGLE OF ATTACK AS A PREDETERMINED FUNCTION OG AIRCRAFT VERTICAL VELOCITY COMPRISING: A SOURCE OF SIGNAL PROPORTIONAL TO AIRCRAFT VERTICAL VELOCITY, A NONLINEAR SIGNAL SHAPING NETWORK RECEIVING SAID VERTICAL VELOCITY SIGNAL AND DEVELOPING THEREFROM AN OUTPUT SIGNAL THE MAGNITUDE OF WHICH VARIES AS A FUNCTION OF AIRCRAFT VERTICAL VELOCITY IN A PREDETERMINED NONLINEAR MANNER, AN ANGLE OF ATTACK FEEDBACK SIGNAL TAKEN FROM AN ANGLE OF ATTACK SENSOR, FIRST SIGNAL COMPARSION MENAS RECEIVING AND DIFFERENTIALLY COMBINING SAID FEEDBACK SIGNAL AND THE OUTPUT OF SAID SHAPING NETWORK, THE MAGNITUDE AND SENSING OF THE OUTPUT FROM SAID FIRST SIGNAL COMPARSION MEANS BEING RESPECTIVELY DEFINITIVE OF THE EXTENT AND DIRECTION OF A CHANGE IN AIRCRAFT PITCH ATTITUDE NECESSARY TO EFFECT A PREDETERMINED ANGLE OF ATTACK IN RESPONSE TO A PARTICULAR AIRCRAFT VERTICAL VELOCITY AS A PROGRAMMED FUNCTION DETERMINED BY THE CHARACTERISTIC OF SAID SIGNAL SHAPING NETWORK.
Claim 2
Dependent Claim
159 words
AN AUTOMATIC CONTROL SYSTEM FOR AIRCRAFT VERTICAL GUIDANCE WHEREBY AIRCRAFT PITCH ATTITUDE IS CONTROLLED TO MAINTAIN AIRCRAFT ANGLE OF ATTACK AS A PREDETERMINED FUNCTION OG AIRCRAFT VERTICAL VELOCITY COMPRISING: A SOURCE OF SIGNAL PROPORTIONAL TO AIRCRAFT VERTICAL VELOCITY, A NONLINEAR SIGNAL SHAPING NETWORK RECEIVING SAID VERTICAL VELOCITY SIGNAL AND DEVELOPING THEREFROM AN OUTPUT SIGNAL THE MAGNITUDE OF WHICH VARIES AS A FUNCTION OF AIRCRAFT VERTICAL VELOCITY IN A PREDETERMINED NONLINEAR MANNER, AN ANGLE OF ATTACK FEEDBACK SIGNAL TAKEN FROM AN ANGLE OF ATTACK SENSOR, FIRST SIGNAL COMPARSION MENAS RECEIVING AND DIFFERENTIALLY COMBINING SAID FEEDBACK SIGNAL AND THE OUTPUT OF SAID SHAPING NETWORK, THE MAGNITUDE AND SENSING OF THE OUTPUT FROM SAID FIRST SIGNAL COMPARSION MEANS BEING RESPECTIVELY DEFINITIVE OF THE EXTENT AND DIRECTION OF A CHANGE IN AIRCRAFT PITCH ATTITUDE NECESSARY TO EFFECT A PREDETERMINED ANGLE OF ATTACK IN RESPONSE TO A PARTICULAR AIRCRAFT VERTICAL VELOCITY AS A PROGRAMMED FUNCTION DETERMINED BY THE CHARACTERISTIC OF SAID SIGNAL SHAPING NETWORK.
References Cited (Backward Citations)
US2842324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |