GB734091A - Improvements in or relating to protective devices for fluid intake ducts - Google Patents

Improvements in or relating to protective devices for fluid intake ducts

Info

Publication number
GB734091A
GB734091A GB1693352A GB1693352A GB734091A GB 734091 A GB734091 A GB 734091A GB 1693352 A GB1693352 A GB 1693352A GB 1693352 A GB1693352 A GB 1693352A GB 734091 A GB734091 A GB 734091A
Authority
GB
United Kingdom
Prior art keywords
grid
airflow
link
air intake
operative
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
GB1693352A
Inventor
Norman Battle
Philip Burrows Smith
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.)
Rolls Royce PLC
Original Assignee
Rolls Royce PLC
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 Rolls Royce PLC filed Critical Rolls Royce PLC
Priority to GB1693352A priority Critical patent/GB734091A/en
Publication of GB734091A publication Critical patent/GB734091A/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
    • F02C7/05—Air intakes for gas-turbine plants or jet-propulsion plants having provisions for obviating the penetration of damaging objects or particles
    • F02C7/055—Air intakes for gas-turbine plants or jet-propulsion plants having provisions for obviating the penetration of damaging objects or particles with intake grids, screens or guards
    • 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
    • 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
    • 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
    • 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
    • B64D2033/022—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes comprising bird or foreign object protections

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

734,091. Gas turbine plant. ROLLS-ROYCE, Ltd. June 29,1953 [July 4, 1952], No. 16933/52. Class 110 (3). In a debris guard for the air intake duct of a gas turbine engine, a grid portion is pivotally supported adjacent an edge thereof to move. between its operative and inoperative positions so that in each position of the grid portion, the line of action of the load on the grid portion due to the airflow in the air intake duct passes through or close to the corresponding instantaneous centre of rotation of the grid portion at least over a major part of the travel of the grid portion between its operative and inoperative positions. In Fig. 1, the outer end of the grid portion 10 is mounted on a roller 13 which is moved in guides 14 parallel to the direction of the airflow 15 by means of a ram 11a in a cylinder 11. The grid is connected by a link 17 to a fixed part of the structure at 19. The centre of pressure of the grid is indicated at 16. In this embodiment, the line of action of the load due to the airflow passes through the instantaneous centre of rotation at each position. In Fig. 2, the grid is connected to the fixed structure by a link 20 connected at 22 to an offset portion of the grid. In Fig. 3, the offset portion 24 of the grid carries a roller 23 which is constrained to move in the direction 25a. The dimensions may be such that the load due to the airflow operates to assist movement of the grid towards its operative position and towards its retracted position, the line of action of the load due to the airflow passing through the instantaneous centre of rotation at an intermediate position. The air intake shown in Fig. 4 is annular and the grid portions 34 comprise portions of the annulus and together form a frusto-conical surface. The grid portions are constructed in accordance with the arrangement shown in Fig. 2 and a ram 48, lug 53 and link 52 are fitted at each end of the arcuate outer edge of each grid portion. The grid comprises aerofoil slats 39 secured to a frame. Specification 668,638 is referred to.
GB1693352A 1952-07-04 1952-07-04 Improvements in or relating to protective devices for fluid intake ducts Expired GB734091A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1693352A GB734091A (en) 1952-07-04 1952-07-04 Improvements in or relating to protective devices for fluid intake ducts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1693352A GB734091A (en) 1952-07-04 1952-07-04 Improvements in or relating to protective devices for fluid intake ducts

Publications (1)

Publication Number Publication Date
GB734091A true GB734091A (en) 1955-07-27

Family

ID=10086283

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1693352A Expired GB734091A (en) 1952-07-04 1952-07-04 Improvements in or relating to protective devices for fluid intake ducts

Country Status (1)

Country Link
GB (1) GB734091A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10513980B2 (en) 2017-01-24 2019-12-24 Rolls-Royce Plc Gas turbine engine arrangement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10513980B2 (en) 2017-01-24 2019-12-24 Rolls-Royce Plc Gas turbine engine arrangement

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