GB621607A - Improvements in or relating to aircraft propulsion units - Google Patents

Improvements in or relating to aircraft propulsion units

Info

Publication number
GB621607A
GB621607A GB3342/47A GB334247A GB621607A GB 621607 A GB621607 A GB 621607A GB 3342/47 A GB3342/47 A GB 3342/47A GB 334247 A GB334247 A GB 334247A GB 621607 A GB621607 A GB 621607A
Authority
GB
United Kingdom
Prior art keywords
propeller
jet
engine
aircraft propulsion
pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3342/47A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Societe Nationale des Constructions Aeronautiques du Sud Oest SNCASO
Original Assignee
Societe Nationale des Constructions Aeronautiques du Sud Oest SNCASO
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Societe Nationale des Constructions Aeronautiques du Sud Oest SNCASO filed Critical Societe Nationale des Constructions Aeronautiques du Sud Oest SNCASO
Publication of GB621607A publication Critical patent/GB621607A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
    • F02C6/20—Adaptations of gas-turbine plants for driving vehicles
    • F02C6/206—Adaptations of gas-turbine plants for driving vehicles the vehicles being airscrew driven
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D35/00—Transmitting power from power plants to propellers or rotors; Arrangements of transmissions
    • B64D35/04—Transmitting power from power plants to propellers or rotors; Arrangements of transmissions characterised by the transmission driving a plurality of propellers or rotors
    • B64D35/06—Transmitting power from power plants to propellers or rotors; Arrangements of transmissions characterised by the transmission driving a plurality of propellers or rotors the propellers or rotors being counter-rotating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D35/00—Transmitting power from power plants to propellers or rotors; Arrangements of transmissions
    • B64D35/08—Transmitting power from power plants to propellers or rotors; Arrangements of transmissions characterised by the transmission being driven by a plurality of power plants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
    • F02C6/02—Plural gas-turbine plants having a common power output

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Testing Of Engines (AREA)

Abstract

621,607. Aircraft propulsion. SOC. NATIONALE DE CONSTRUCTIONS AERONAUTIQUES DU SUD-OUEST. Feb. 4, 1947, No. 3342. Convention date, Feb. 5, 1946. [Classes 4 and 114] [Also in Group XXVI] An aircraft propulsion unit comprises a pusher propeller unit driven by one or more engines and an annular reaction jet nozzle fed by the gases from said engine, the nozzle surrounding coaxially the hub of the propeller unit, and each blade root of the propeller unit being insulated from the gaseous jet by a fairing. One or more coupled coaxial pusher propellers 5 are driven by one or more turbines 2 by means of shafting 8, gearing 8a and a reduction gear 6. The engine tail pipes 3 are formed into a single jet pipe 4 which is coaxial with and exhausts rearwards of the propeller hubs 7 through a concentric annular duct formed between a cowling 11 and a hub fairing 12 connected by radial blade root fairings 13 set at an angle to minimize resistance, taking account of the rotary propeller speed and the gas ejection speed. The hubs 7 and the blade roots 5a may be either insulated against the heating effect of the jet or protected against icing effects by passing respectively cooling air or exhaust gases through the flap valve 15 and exhausting the air or gas through gaps 24 between the cowling 11 and the blade roots 5a. For contra-rotating propeller installations the oppositely rotating cowlings 11 and the stationary pipe 4 may be interconnected by stuffing-boxes or labyrinth joints. The pipe 4 may be sub-divided to maintain a high exhaust ejection speed if one engine is stopped. In an alternative arrangement (not shown), additional ducts eject part of the exhaust gases over the upper surface of the flaps to improve the lift properties thereof.
GB3342/47A 1946-02-05 1947-02-04 Improvements in or relating to aircraft propulsion units Expired GB621607A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR621607X 1946-02-05

Publications (1)

Publication Number Publication Date
GB621607A true GB621607A (en) 1949-04-12

Family

ID=8985225

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3342/47A Expired GB621607A (en) 1946-02-05 1947-02-04 Improvements in or relating to aircraft propulsion units

Country Status (1)

Country Link
GB (1) GB621607A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989010300A1 (en) * 1988-04-28 1989-11-02 Allied-Signal Inc. Spinner ducted exhaust for pusher turboprop engines
US4930725A (en) * 1988-12-16 1990-06-05 Allied-Signal Inc. Pusher propeller installation for turboprop engines
US4998995A (en) * 1988-05-05 1991-03-12 British Aerospace Public Limited Company Aircraft of split turbo-prop configuration
FR3042008A1 (en) * 2015-10-05 2017-04-07 Snecma PROPULSION ASSEMBLY WITH OFFSET SHAFT BLOWER AND SPEED REDUCER ON THE BLOWER DRIVE SHAFT

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989010300A1 (en) * 1988-04-28 1989-11-02 Allied-Signal Inc. Spinner ducted exhaust for pusher turboprop engines
US4998995A (en) * 1988-05-05 1991-03-12 British Aerospace Public Limited Company Aircraft of split turbo-prop configuration
US4930725A (en) * 1988-12-16 1990-06-05 Allied-Signal Inc. Pusher propeller installation for turboprop engines
FR3042008A1 (en) * 2015-10-05 2017-04-07 Snecma PROPULSION ASSEMBLY WITH OFFSET SHAFT BLOWER AND SPEED REDUCER ON THE BLOWER DRIVE SHAFT

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