GB1438769A - Supersonic mixed compression jet engine air intakes - Google Patents

Supersonic mixed compression jet engine air intakes

Info

Publication number
GB1438769A
GB1438769A GB4945972A GB4945972A GB1438769A GB 1438769 A GB1438769 A GB 1438769A GB 4945972 A GB4945972 A GB 4945972A GB 4945972 A GB4945972 A GB 4945972A GB 1438769 A GB1438769 A GB 1438769A
Authority
GB
United Kingdom
Prior art keywords
engine air
upstream
throat
wall
intake
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
GB4945972A
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.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
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 UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Priority to GB4945972A priority Critical patent/GB1438769A/en
Publication of GB1438769A publication Critical patent/GB1438769A/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
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D33/00—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for
    • B64D33/02—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes
    • B64D2033/0253—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes specially adapted for particular type of aircraft
    • B64D2033/026—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes specially adapted for particular type of aircraft for supersonic or hypersonic aircraft

Abstract

1438769 Supersonic jet engine air intakes DEFENCE SECRETARY OF STATE FOR 17 Oct 1973 [26 Oct 1972] 49459/72 Headings F1G and F1J A supersonic, mixed-compression jet engine air intake has walls defining a convergent-divergent flow passage having a throat therein at the plane P, the walls comprising a first wall 1 and a second wall 2a, 2b opposite thereto, the second wall having formed therein a duct entrance 3 extending upstream from the throat, the upstream edge of the duct entrance being located in a region opposite the upstream termination of the first wall 1. The intake normal shock wave A, when located upstream of the throat, terminating on a streamline boundary E extending across the duct entrance, inlet air in excess of engine air demand being discharged into the duct entrance downstream of the intake normal shock wave. The object of the invention is to avoid the phenomenon known as "unstart" which occurs when the normal shock wave moves upstream from its design point at the intake throat.
GB4945972A 1972-10-26 1972-10-26 Supersonic mixed compression jet engine air intakes Expired GB1438769A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4945972A GB1438769A (en) 1972-10-26 1972-10-26 Supersonic mixed compression jet engine air intakes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4945972A GB1438769A (en) 1972-10-26 1972-10-26 Supersonic mixed compression jet engine air intakes

Publications (1)

Publication Number Publication Date
GB1438769A true GB1438769A (en) 1976-06-09

Family

ID=10452413

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4945972A Expired GB1438769A (en) 1972-10-26 1972-10-26 Supersonic mixed compression jet engine air intakes

Country Status (1)

Country Link
GB (1) GB1438769A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4991795A (en) * 1989-01-17 1991-02-12 The Boeing Company Two-stage supersonic inlet
US5033693A (en) * 1988-12-14 1991-07-23 The Boeing Company Single-piece, flexible inlet ramp
EP0810357A1 (en) * 1996-05-28 1997-12-03 Lockheed Martin Corporation Diverting boundary layer air
CN108019279A (en) * 2017-12-07 2018-05-11 中国人民解放军国防科技大学 Design method of hypersonic air inlet channel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5033693A (en) * 1988-12-14 1991-07-23 The Boeing Company Single-piece, flexible inlet ramp
US4991795A (en) * 1989-01-17 1991-02-12 The Boeing Company Two-stage supersonic inlet
EP0810357A1 (en) * 1996-05-28 1997-12-03 Lockheed Martin Corporation Diverting boundary layer air
CN108019279A (en) * 2017-12-07 2018-05-11 中国人民解放军国防科技大学 Design method of hypersonic air inlet channel

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee