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Patent US3624751A successfully refreshed from Google Patents.
US3624751A
Expired / Lapsed
US
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Aerodynamic air inlet for air-breathing propulsion systems
Assignee: United States Department of the Navy
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Filing: 1970-04-23
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Granted: 1971-11-30
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Expires: 1990-04-23
Abstract
Abstract Means for effecting the induction of outside air into the combustion process of an air-breathing propulsion system such as ram jets, ducted rockets, and air-augmented rockets. A jet of fluid is exhausted at high velocity into the airstream just behind an open port in the skin of the vehicle. The injection of this fluid causes the formation of a shock wave some distance upstream of the point of injection. Air between this shock wave and the injection point is at a high pressure and thus flows into the open port in the skin of the vehicle. Thus, no external obstruction need be attached to the vehicle to divert air into the port.
Inventors
- 👤 Ronald F Dettling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:49
CPC Classifications
F; F15; F15D; F15D1/00; B; B60; B60K; B60K3/00; F02; F02C; F02C7/00; F02C7/04; F02C7/057; Y; Y10; Y10T; Y10T137/00; Y10T137/0536; Y10T137/206; Y10T137/2076; Y10T137/2082
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
93 words
Means for ingesting air angularly into an elongated airframe body having relative motion with an air mass comprising: an intake passageway with said body communicating with said air mass and at an oblique angle near normal to the airflow around said body; means including a second passageway for establishing a jet of fluid, spaced from said passageway rearwardly along the direction of relative motion; such that, when a jet of fluid is so established, physical interaction of said fluid and said air mass causes air to be forced to enter said intake passageway.
Claim 2
Dependent Claim
93 words
Means for ingesting air angularly into an elongated airframe body having relative motion with an air mass comprising: an intake passageway with said body communicating with said air mass and at an oblique angle near normal to the airflow around said body; means including a second passageway for establishing a jet of fluid, spaced from said passageway rearwardly along the direction of relative motion; such that, when a jet of fluid is so established, physical interaction of said fluid and said air mass causes air to be forced to enter said intake passageway.
Claim 3
Dependent Claim
18 words
Apparatus according to claim 1 wherein said fluid is highly reactive with air thus increasing said physical interaction.
Claim 4
Dependent Claim
20 words
Apparatus according to claim 2 wherein said fluid is a liquid selected from the group consisting of; triethylaluminum and pentaborane.
Claim 5
Dependent Claim
20 words
Apparatus according to claim 1 wherein said fluid is a liquid selected from the group consisting of; triethylaluminum and pentaborane.
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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |