Patent EP0252238A1 successfully refreshed from Google Patents.
← Back to Patent Explorer
EP0252238A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Liquid fuel rocket engine

Assignee: National Space Development Agency of Japan
•
Filing: 1987-05-07
•
Granted: —
•
Expires: 2007-05-07
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract The present invention is related to a liquid fuel rocket engine of the type that a liquid fuel is boosted in pressure by way of a booster means, thus-boosted liquid fuel is gasified within a fuel cooling jacket of a fuel combustor means with an expansion pressure of thus-gasified fuel being adapted to energize the booster means, and the gasified fuel is sent to the fuel combustor means so as to be combusted therein to produce a combustion gas to be discharged outwardly serving as a propulsive effort of the rocket engine. An expansion nozzle cooling jacket means is arranged around the circumference of a high expansion nozzle. Part of the gasified fuel from the combustor cooling jacket means is directed into the expansion nozzle cooling jacket means to be reheated therein resulting in an increased potential energy to be utilized for driving the booster means. The remaining major part of gasified fuel from the combustor cooling jacket means is fed directely into the combustor means, so that it may be combusted to be discharged as propulsive force so pressure loss of the gasified fuel Is held to a minimum, while establishing a potential energy made available for driving the booster means.

Inventors

  • 👤 Yukio C/O Nat. Space Development Agency Koyari
  • 👤 Eiji C/O Nat. Space Development Agency Sogame
  • 👤 Kenji C/O Nagoya Aircraft Works Kishimoto
  • 👤 Yojiro C/O Nagoya Aircraft Works Kakuma

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-05 11:43
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/44; F02K9/46; F02K9/48; F02K9/60; F02K9/62; F02K9/64

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 184 words
1 . A liquid fuel rocket engine having a fuel booster means for boosting the pressure of fuel component, an oxidizer booster means for boosting the pressure of oxidizer component, a booster driving means for energizing said two booster means, a combustor means wherein said boosted fuel and oxidizer components are put into combustion to produce a combustion gas to be discharged outwardly, and a combustor cooling jacket means mounted operatively around the circumference of said combustor means; comprising, in combination, a high expansion nozzle means is mounted in line on the side of combustion gas outlet; and an expansion nozzle cooling jacket means disposed operatively around the circumference of said high expansion nozzle means, having an outlet from said fuel booster means connected operatively to an inlet to said combustor cooling jacket means, and having outlet from said combustor means connected operatively to a fuel inlet to said combustor means and to an inlet to said expansion nozzle cooling jacket means, and having an outlet from said expansion nozzle cooling jacket means connected operatively to an inlet to said booster driving means, respectively.
Claim 2
Dependent Claim 184 words
1 . A liquid fuel rocket engine having a fuel booster means for boosting the pressure of fuel component, an oxidizer booster means for boosting the pressure of oxidizer component, a booster driving means for energizing said two booster means, a combustor means wherein said boosted fuel and oxidizer components are put into combustion to produce a combustion gas to be discharged outwardly, and a combustor cooling jacket means mounted operatively around the circumference of said combustor means; comprising, in combination, a high expansion nozzle means is mounted in line on the side of combustion gas outlet; and an expansion nozzle cooling jacket means disposed operatively around the circumference of said high expansion nozzle means, having an outlet from said fuel booster means connected operatively to an inlet to said combustor cooling jacket means, and having outlet from said combustor means connected operatively to a fuel inlet to said combustor means and to an inlet to said expansion nozzle cooling jacket means, and having an outlet from said expansion nozzle cooling jacket means connected operatively to an inlet to said booster driving means, respectively.
Claim 3
Dependent Claim 90 words
A liquid fuel rocket engine as claimed in Claim 1, wherein said expansion nozzle cooling jacket means is adapted to serve as a heat exchanger means mounted operatively around the circumference of said high expansion nozzle means, and wherein said fuel component is reheated by said expansion nozzle cooling jacket means while passing therethrough and is fed into said booster driving means or two gas turbine means, whereby said fuel booster means and said oxidizer booster means are energized in rotation with the output from said two gas turbine means.
Claim 4
Dependent Claim 41 words
A liquid fuel rocket engine as claimed in Claim 2, wherein an outlet from said gas turbine means for driving said fuel booster means is connected operatively to an inlet to said gas turbine means for driving said oxidizer booster means.

References Cited (Backward Citations)

FR2031047A6 Cited
FR2531141A1 Cited

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag