US3662960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injector head
Assignee: RTX Corp
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Filing: 1966-11-21
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Granted: 1972-05-16
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Expires: 1986-11-21
Abstract
Abstract An injector head having a plurality of manifolds formed by plates spaced rearwardly of the face plate. The second plate spaced adjacent said fact plate having a first projection which extends into an opening through the face plate. The third plate positioned rearwardly of said second plate having a second projection which extends into an opening which passes through the first projection of said second plate. An opening passes through said second projection. A back plate is located behind the third plate. Said projections having tapered sections to provide for a desired pressure drop.
Inventors
- 👤 James P Mitchell
- 👤 Bruce T Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:01
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/44; F02K9/52; F04; F04F; F04F5/00; F04F5/44; F04F5/46; F04F5/463
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
214 words
An injector head for a rocket engine having in combination: a face plate, said face plate having a hole therein, a second plate means spaced rearwardly from said face plate forming a first propellant manifold with said face plate, said second plate having a first projection which extends into said hole, said first projection having a first opening therethrough, a third plate means spaced rearwardly from said second plate means forming a secondary second propellant manifold with said second plate means, said third plate means having a second projection extending therefrom into said first opening passing through said first projection, said second projection having a second opening passing therethrough, a fourth plate means spaced rearwardly from said third plate means forming a primary second propellant manifold with said third plate means, said first opening in said first projection having a conical section tapering inwardly from the secondary manifold to a cylindrical section at its free end, said second projection having a conical outer surface which tapers inwardly to a short cylindrical surface adjacent the end of the projection, and said mating conical section of said first projection and conical surface of said second projection forming a conical inlet such that the major pressure drop is downstream of the outlet end of the conical inlet.
Claim 2
Dependent Claim
214 words
An injector head for a rocket engine having in combination: a face plate, said face plate having a hole therein, a second plate means spaced rearwardly from said face plate forming a first propellant manifold with said face plate, said second plate having a first projection which extends into said hole, said first projection having a first opening therethrough, a third plate means spaced rearwardly from said second plate means forming a secondary second propellant manifold with said second plate means, said third plate means having a second projection extending therefrom into said first opening passing through said first projection, said second projection having a second opening passing therethrough, a fourth plate means spaced rearwardly from said third plate means forming a primary second propellant manifold with said third plate means, said first opening in said first projection having a conical section tapering inwardly from the secondary manifold to a cylindrical section at its free end, said second projection having a conical outer surface which tapers inwardly to a short cylindrical surface adjacent the end of the projection, and said mating conical section of said first projection and conical surface of said second projection forming a conical inlet such that the major pressure drop is downstream of the outlet end of the conical inlet.
Claim 3
Dependent Claim
49 words
An injector head as set forth in claim 1 wherein said first opening in said first projection has a cylindrical section at its free end, and said free end of said second projection extending into said first opening at least as far as the beginning of the cylindrical section.
Claim 4
Dependent Claim
55 words
An injector head as set forth in claim 1 wherein said first opening in said first projection has a cylindrical section at its free end, and said free end of said second projection being spaced from the free end of said cylindrical section a minimum distance of 0.5 times the diameter of the cylindrical section.
Claim 5
Dependent Claim
71 words
An injector head as set forth in claim 1 wherein said first opening in said first projection has a cylindrical section at its free end, and said free end of said second projection extending into said first opening to a point between the beginning of the cylindrical section and a point located a distance of 0.5 times the diameter of the cylindrical section from the free end of the cylindrical section.
Claim 6
Dependent Claim
32 words
An injector head as set forth in claim 2 wherein the diameter of the second opening lies in the range of from 0.1 to 0.5 times the diameter of the cylindrical section.
Claim 7
Dependent Claim
47 words
An injector head as set forth in claim 1 wherein said conical section of said first opening forms an angle in the range of from 30* to 40* and the conical surface of said second projection forms an angle in the range of from 25* to 30*.
Claim 8
Dependent Claim
31 words
An injector head as set forth in claim 1 wherein said first projection has an outer end which forms an annular opening with said face plate, said face plate being permeable.
Claim 9
Dependent Claim
20 words
An injector head as set forth in claim 7 wherein said face plate has a permeability of approximately 40 scfm.
Claim 10
Dependent Claim
59 words
An injector head as set fortH in claim 1 wherein said first opening in said first projection has a cylindrical section at its free end, and said free end of said second projection extending into said opening approximately 0.015 in. and being spaced from the free end of the cylindrical section a distance of between 0.15 and 0.20 in.
Claim 11
Dependent Claim
29 words
An injector head as set forth in claim 1 wherein the first opening must be concentric with the second opening within 0.1 times the diameter of the first opening.
Claim 12
Dependent Claim
42 words
An injector head as set forth in claim 1 wherein the diameter of said first opening is approximately 0.072 in., the diameter of the second opening is approximately 0.010 in., and the diameter of said short cylindrical surface is approximately 0.036 in.
Claim 13
Dependent Claim
26 words
An injector head as set forth in claim 12 wherein a swirler unit is located within said second opening adjacent the end of the second projection.
Claim 14
Dependent Claim
38 words
An injector head as set forth in claim 1 wherein said swirler unit is arranged to direct a liquid therefrom having an increasing cone of flow which does not impinge upon the free end of the first opening.
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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |