US4087065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical control system for actuating inboard spoilers on aircraft
Assignee: Boeing Co
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Filing: 1977-02-04
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Granted: 1978-05-02
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Expires: 1997-02-04
Abstract
Abstract An electrical system for actuating the inboard spoilers on the wings of an aircraft in response to the lateral control input from the pilot control wheel and to the position of the pilot speed brake lever. The pilot speed brake lever position signal being used to select the modulation provided by a three mode function generator which generates the signal that actuates the spoilers.
Inventors
- 👤 Willard Dale Arnquist
- 👤 Melvin John Roalsvig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:21
CPC Classifications
B; B64; B64C; B64C13/00; B64C13/02; B64C13/04; B64C13/042; B64C13/0425
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
80 words
An electrical control system for actuating inboard spoilers on the wings of an aircraft comprising: first means responsive to lateral control information provided by pilot control wheel of the aircraft for providing a first signal; second means responsive to pilot speed brake lever positioning for providing a second signal; third means including a three mode function generator responsive to said first and second signals for providing an output control signal for actuating said inboard spoilers simultaneously in a modulated manner.
Claim 2
Dependent Claim
80 words
An electrical control system for actuating inboard spoilers on the wings of an aircraft comprising: first means responsive to lateral control information provided by pilot control wheel of the aircraft for providing a first signal; second means responsive to pilot speed brake lever positioning for providing a second signal; third means including a three mode function generator responsive to said first and second signals for providing an output control signal for actuating said inboard spoilers simultaneously in a modulated manner.
Claim 3
Dependent Claim
31 words
The invention according to claim 1 wherein the modulation provided by said three mode function generator is selected through mode switching of said three mode function generator by said second signal.
Claim 4
Dependent Claim
106 words
An aircraft control system for inboard spoilers comprising in combination: first means responsive to lateral control information for providing a first signal; a three mode function generator for providing first, second, or third output signals in response to said first signal; switching means responsive to aircraft speed brake lever positioning for selecting one of the three modes of the three mode function generator for providing said first, second, or third output signals; and, means coupled between said three mode function generator and said inboard spoilers for simultaneously controlling said inboard spoilers in a modulated manner as a function of said first, second, or third output signals.
Claim 5
Dependent Claim
106 words
An aircraft control system for inboard spoilers comprising in combination: first means responsive to lateral control information for providing a first signal; a three mode function generator for providing first, second, or third output signals in response to said first signal; switching means responsive to aircraft speed brake lever positioning for selecting one of the three modes of the three mode function generator for providing said first, second, or third output signals; and, means coupled between said three mode function generator and said inboard spoilers for simultaneously controlling said inboard spoilers in a modulated manner as a function of said first, second, or third output signals.
References Cited (Backward Citations)
US3618880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-01 | 1981-10-31 | 1982-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-01 | 1985-10-31 | 1986-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-01 | 1989-10-31 | 1990-05-02 | $7700.00 | Window Closed / Lapsed |