US3776489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sonic boom eliminator
Assignee: Individual
•
Filing: 1972-01-07
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Granted: 1973-12-04
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Expires: 1992-01-07
Abstract
Abstract A structure for eliminating sonic booms developed by the major sub-structures of a supersonic aircraft in accordance with the selective positioning of the exhaust gases of the aircraft, air inlets and outlets and conduits between the inlets and outlets. A supersonic aircraft using the structure is disclosed wherein the major sub-structures of the aircraft incorporate exhaust gas positioning, inlets, outlets and conduits between the inlets and outlets.
Inventors
- 👤 L Wen
- 👤 M Beard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:48
CPC Classifications
B; B64; B64C; B64C23/00; B64C23/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
139 words
In an aircraft adapted to fly at supersonic speeds without attendant generation of sonic booms, an airfoil having a leading edge and a trailing edge, air intake means disposed in the surface of said leading edge defined by apertures therein of small area relative to the area of said leading edge surface, air exhaust means disposed in said trailing edge and conduit means interconnecting said intake and exhaust means, said conduit means providing substantially free communication between said intake and exhaust means, said conduit means having a cross-sectional expanse adjacent said exhaust means substantially greater than the cross-sectional expanse of the apertures communicating with said conduit means for conducting air from said conduit to said exhaust means sufficient only to fill the vAcuum adjacent said trailing edge in supersonic flight of said aircraft with said conduit means conducted air.
Claim 2
Dependent Claim
139 words
In an aircraft adapted to fly at supersonic speeds without attendant generation of sonic booms, an airfoil having a leading edge and a trailing edge, air intake means disposed in the surface of said leading edge defined by apertures therein of small area relative to the area of said leading edge surface, air exhaust means disposed in said trailing edge and conduit means interconnecting said intake and exhaust means, said conduit means providing substantially free communication between said intake and exhaust means, said conduit means having a cross-sectional expanse adjacent said exhaust means substantially greater than the cross-sectional expanse of the apertures communicating with said conduit means for conducting air from said conduit to said exhaust means sufficient only to fill the vAcuum adjacent said trailing edge in supersonic flight of said aircraft with said conduit means conducted air.
Claim 3
Dependent Claim
142 words
In an aircraft adapted to fly at supersonic speeds without attendant generation of sonic booms, in combination, air intake means in the surface of a leading edge of said aircraft defined by at least an aperture therein of small area relative to the area of said leading edge surface, air exhaust means disposed in the trailing edges of major substructures of said aircraft and conduit means interconnecting said intake and exhaust means, said conduit means providing substantially free communication between said intake and exhaust means, said conduit means having a cross-sectional expanse adjacent said exhaust means substantially greater than the cross-sectional expanse of the apertures communicating with said conduit means for conducting air from said conduit to said exhaust means sufficient only to fill the vacuum adjacent said trailing edge in supersonic flight of said aircraft with said conduit means conducted air.
Claim 4
Dependent Claim
142 words
In an aircraft adapted to fly at supersonic speeds without attendant generation of sonic booms, in combination, air intake means in the surface of a leading edge of said aircraft defined by at least an aperture therein of small area relative to the area of said leading edge surface, air exhaust means disposed in the trailing edges of major substructures of said aircraft and conduit means interconnecting said intake and exhaust means, said conduit means providing substantially free communication between said intake and exhaust means, said conduit means having a cross-sectional expanse adjacent said exhaust means substantially greater than the cross-sectional expanse of the apertures communicating with said conduit means for conducting air from said conduit to said exhaust means sufficient only to fill the vacuum adjacent said trailing edge in supersonic flight of said aircraft with said conduit means conducted air.
Claim 5
Dependent Claim
15 words
The invention claimed in claim 1 wherein said airfoil is a wing of said aircraft.
Claim 6
Dependent Claim
15 words
The invention claimed in claim 1 wherein said airfoil is a stabilizer of said aircraft.
Claim 7
Dependent Claim
15 words
The invention claimed in claim 2 wherein said major substructures are wings of said aircraft.
Claim 8
Dependent Claim
15 words
The invention claimed in claim 2 wherein said major substructures are stabilizers of said aircraft.
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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |