Patent US3272770A successfully refreshed from Google Patents.
US3272770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and manufacture for propellant aeration
Assignee: RTX Corp
•
Filing: 1963-02-01
•
Granted: 1966-09-13
•
Expires: 1983-02-01
Abstract
No abstract record available.
Inventors
- 👤 Duane W Lundahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:48
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/44; F02K9/52; F02K9/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A METHOD OF CONTROLLING THE DENSITY OF A LIQUID PROPELLANT FOR CONSUMPTION IN A REACTION MOTOR IN WHICH THE THRUST PRODUCED IS RESPONSIVE TO CHANGES IN PROPELLANT DENSITY COMPRISING THE STEPS OF PROVIDING A LIQUID PROPELLANT; FLOWING SAID LIQUID PROPELLANT TO A FIRST PREDETERMINED POINT FOR COMBUSTION; PROVIDING A FLUID SUITABLE FOR DENSITY MODIFICATION OF SAID LIQUID PROPELLANT, SAID FLUID BEING CAPABLE OF FROMING AN INITIALLY UNIFORM TWOPHASE MIXTURE WITH SAID LIQUID PROPELLANT WHICH MIXTURE HAS A TENDENCY TO SEPARATE INTO SEPARATE PHASES; INJECTING SAID FLUID INTO SAID LIQUID PROPELLANT WHICH MIXTURE TERMINED POINT TO FORM SAID UNIFORM TWO-PHASE MIXTURE, SAID SECOND POINT BEING UPSTREAM FROM AND IMMEDIATELY ADJACENT TO SAID FIRST PREDETERMINED POINT SO THAT SAID TWO-PHASE MIXTURE MAINTAINS UNIFORMITY DURING FLOW BETWEEN SAID SECOND AND FIRST PREDETERMINED POINT SO THAT SAID LECTIVELY VARYING THE RATE AT WHICH SAID FLUID IS INJECTED INTO SAID LIQUID PROPELLANT TO VARY THE DENSITY OF THE PROPELLANT AND TO CONTROL THE THRUST OF SAID REACTION MOTOR.
Claim 2
Independent Claim
163 words
A METHOD OF CONTROLLING THE DENSITY OF A LIQUID PROPELLANT FOR CONSUMPTION IN A REACTION MOTOR IN WHICH THE THRUST PRODUCED IS RESPONSIVE TO CHANGES IN PROPELLANT DENSITY COMPRISING THE STEPS OF PROVIDING A LIQUID PROPELLANT; FLOWING SAID LIQUID PROPELLANT TO A FIRST PREDETERMINED POINT FOR COMBUSTION; PROVIDING A FLUID SUITABLE FOR DENSITY MODIFICATION OF SAID LIQUID PROPELLANT, SAID FLUID BEING CAPABLE OF FROMING AN INITIALLY UNIFORM TWOPHASE MIXTURE WITH SAID LIQUID PROPELLANT WHICH MIXTURE HAS A TENDENCY TO SEPARATE INTO SEPARATE PHASES; INJECTING SAID FLUID INTO SAID LIQUID PROPELLANT WHICH MIXTURE TERMINED POINT TO FORM SAID UNIFORM TWO-PHASE MIXTURE, SAID SECOND POINT BEING UPSTREAM FROM AND IMMEDIATELY ADJACENT TO SAID FIRST PREDETERMINED POINT SO THAT SAID TWO-PHASE MIXTURE MAINTAINS UNIFORMITY DURING FLOW BETWEEN SAID SECOND AND FIRST PREDETERMINED POINT SO THAT SAID LECTIVELY VARYING THE RATE AT WHICH SAID FLUID IS INJECTED INTO SAID LIQUID PROPELLANT TO VARY THE DENSITY OF THE PROPELLANT AND TO CONTROL THE THRUST OF SAID REACTION MOTOR.
References Cited (Backward Citations)
US2391422A
Cited
US2405785A
Cited
US2835106A
Cited
US2874539A
Cited
US2933894A
Cited
US2987873A
Cited
US2884758A
Cited
US2931429A
Cited
US3073119A
Cited
US3045424A
Cited
US3104696A
Cited
US3143401A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |