US3595024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ducted fan-jet engine
Assignee: MTU Aero Engines AG
•
Filing: 1969-05-08
•
Granted: 1971-07-27
•
Expires: 1989-05-08
Abstract
Abstract A ducted fan-jet power plant in which a part of the bypass airflow supplied by the low-pressure compressor is conducted through hollow turbine discharge guide blades, open at their trailing edges, for the purpose of mixing the bypass flow and the main flow of the power plant within the area of the turbine discharge guide blades.
Inventors
- 👤 Gottfried Kohler
- 👤 Eberhard Bader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:54
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/38; F02K1/386; F02K3/00; F02K3/08; F02K3/10; F23; F23R; F23R3/00; F23R3/02; F23R3/16; F23R3/18; F23R3/20; F23R3/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
109 words
A bypass gas turbine propulsion unit comprising in flow series low-pressure compressor means, high-pressure compressor means, combustion means, high-pressure turbine means, lowpressure turbine means, afterburner means including a jet-pipe with a thrust nozzle, wherein the improvement comprises hollow turbine discharge guide blade means for mixing bypass flow and core flow of the propulsion unit upstream of the nozzle, the hollow turbine discharge guide blade means at the exit of the low pressure turbine means and forming part of the afterburner means so as to effeCt flame stabilization, wherein fuel-injection means for injecting duel into the propulsion unit gases are located inside of the hollow turbine discharge guide blade means.
Claim 2
Dependent Claim
109 words
A bypass gas turbine propulsion unit comprising in flow series low-pressure compressor means, high-pressure compressor means, combustion means, high-pressure turbine means, lowpressure turbine means, afterburner means including a jet-pipe with a thrust nozzle, wherein the improvement comprises hollow turbine discharge guide blade means for mixing bypass flow and core flow of the propulsion unit upstream of the nozzle, the hollow turbine discharge guide blade means at the exit of the low pressure turbine means and forming part of the afterburner means so as to effeCt flame stabilization, wherein fuel-injection means for injecting duel into the propulsion unit gases are located inside of the hollow turbine discharge guide blade means.
Claim 3
Dependent Claim
39 words
A propulsion unit according to claim 1, wherein the hollow turbine discharge guide blade means having leading edges provided with aperture means for directing fuel from the fuel-injection means opposite to the flow direction of the propulsion unit gases.
Claim 4
Dependent Claim
47 words
A propulsion unit according to claim 1, wherein the hollow turbine discharge guide blade means are provided laterally with aperture means through which hot gases of the propulsion unit are adapted to be supplied to the bypass air inside of the hollow turbine discharge guide blade means.
Claim 5
Dependent Claim
57 words
A propulsion unit according to claim 3, wherein the afterburner means includes radially arranged, relatively short flame-holder means downstream of the hollow turbine discharge guide blade means to which mixture air is adapted to be supplied by the vortexing of bypass airflow and core-flow components of the propulsion unit in the hollow turbine discharge guide blade means.
Claim 6
Dependent Claim
44 words
A propulsion unit according to claim 4, wherein flow guide means for the introduction of a portion of the bypass air into the hollow turbine discharge guide blade means are arranged inside bypass channel means and above the hollow turbine discharge guide blade means.
References Cited (Backward Citations)
US3118276A
Cited
US3100627A
Cited
US2934895A
Cited
US3043101A
Cited
US3245218A
Cited
US3264822A
Cited
US3330117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |