US4786905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wind shear detector head-up display system
Assignee: Sundstrand Corp
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Filing: 1986-03-26
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Granted: 1988-11-22
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Expires: 2006-03-26
Abstract
Abstract An aircraft performance instrument which provides a first indicator which represents the line of level flight of the aircraft and a second indicator representative of the maximum permissible angle of attack of the aircraft.
Inventors
- 👤 Hans R. Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:32
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/04; G05D1/06; G05D1/0607; G05D1/0615; G01; G01C; G01C23/00; G01C23/005
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
111 words
An aircraft instrument especially useful for providing guidance to the pilot of an aircraft when encountering windshear during a take-off or a go-around phase of flight, comprising: (a) a scale index, located on a circular dial face; (b) flight path angle signaling means for providing a signal representative of the aircraft flight path angle; (c) path means for displaying, relative to said scale index, the aircraft flight path angle, said path means comprising a pointer driven by said signal representative of the aircraft flight path angle, said pointer being pivoted about the center of said dial face; and (d) stall means for displaying, relative to said pointer, the aircraft stall margin.
Claim 2
Dependent Claim
111 words
An aircraft instrument especially useful for providing guidance to the pilot of an aircraft when encountering windshear during a take-off or a go-around phase of flight, comprising: (a) a scale index, located on a circular dial face; (b) flight path angle signaling means for providing a signal representative of the aircraft flight path angle; (c) path means for displaying, relative to said scale index, the aircraft flight path angle, said path means comprising a pointer driven by said signal representative of the aircraft flight path angle, said pointer being pivoted about the center of said dial face; and (d) stall means for displaying, relative to said pointer, the aircraft stall margin.
Claim 3
Dependent Claim
16 words
The instrument of claim 1, wherein said stall means is concentrically disposed relative to said pointer.
Claim 4
Dependent Claim
18 words
The instrument of claim 1, wherein said scale index is disposed between said stall means and said pointer.
Claim 5
Dependent Claim
106 words
An aircraft instrument for indicating the performance margin of the aircraft during take-off or a go-around phase of flight and for assisting the pilot of the aircraft in responding to a windshear encounter, comprising: (a) flight path angle means for displaying the flight path angle of the aircraft relative to a scale calibrated in degrees; and (b) maximum angle of attack means for displaying relative to said scale and said display of said flight path angle the margin to the maximum permissible angle of attack, said maximum angle of attack means being driven by a Stall Warning System which operates in response to aircraft flight parameters.
Claim 6
Dependent Claim
106 words
An aircraft instrument for indicating the performance margin of the aircraft during take-off or a go-around phase of flight and for assisting the pilot of the aircraft in responding to a windshear encounter, comprising: (a) flight path angle means for displaying the flight path angle of the aircraft relative to a scale calibrated in degrees; and (b) maximum angle of attack means for displaying relative to said scale and said display of said flight path angle the margin to the maximum permissible angle of attack, said maximum angle of attack means being driven by a Stall Warning System which operates in response to aircraft flight parameters.
Claim 7
Dependent Claim
14 words
The instrument of claim 4, wherein said scale is on a circular dial face.
Claim 8
Dependent Claim
23 words
The instrument of claim 5, wherein said flight path angle means comprises: a pointer rotationally disposed at the center of said dial face.
Claim 9
Dependent Claim
40 words
The instrument of claim 6, wherein said maximum angle of attack means comprises at least a portion of a circular dial which is rotationally disposed at the outer periphery of said dial face and which is indexed to said pointer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-22 | 1992-05-23 | 1992-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-22 | 1996-05-23 | 1996-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-22 | 2000-05-23 | 2000-11-22 | $7700.00 | Window Closed / Lapsed |