GB869632A - Improvements in or relating to aircraft - Google Patents

Improvements in or relating to aircraft

Info

Publication number
GB869632A
GB869632A GB788158A GB788158A GB869632A GB 869632 A GB869632 A GB 869632A GB 788158 A GB788158 A GB 788158A GB 788158 A GB788158 A GB 788158A GB 869632 A GB869632 A GB 869632A
Authority
GB
United Kingdom
Prior art keywords
fan
louvres
outlet
duct
aircraft
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
GB788158A
Inventor
Charles Vivian Kenmir
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.)
Boulton Paul Aircraft Ltd
Original Assignee
Boulton Paul Aircraft Ltd
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 Boulton Paul Aircraft Ltd filed Critical Boulton Paul Aircraft Ltd
Priority to GB788158A priority Critical patent/GB869632A/en
Publication of GB869632A publication Critical patent/GB869632A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C29/00—Aircraft capable of landing or taking-off vertically, e.g. vertical take-off and landing [VTOL] aircraft
    • B64C29/0008—Aircraft capable of landing or taking-off vertically, e.g. vertical take-off and landing [VTOL] aircraft having its flight directional axis horizontal when grounded
    • B64C29/0016—Aircraft capable of landing or taking-off vertically, e.g. vertical take-off and landing [VTOL] aircraft having its flight directional axis horizontal when grounded the lift during taking-off being created by free or ducted propellers or by blowers

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

869,632. Direct lift aircraft. BOULTON PAUL AIRCRAFT Ltd. June 9, 1959 [March 11, 1958], No. 7881/58. Class 4. In an aircraft, in which direct lift is provided by a fan system driven by the efflux from one or more jet engines and means, such as louvres at the fan duct outlet, are provided for deflecting the fan discharge forwardly or rearwardly to provide a horizontal thrust component, the effective cross-sectional area of the fan duct increases progressively between the fan and the outlet to avoid loss of thrust during deflection. The lower part of the fan hub is tapered as shown to provide a crosssectional area at the outlet plane of the louvres (which for vertical lift are coned inwardly as shown). which is substantially the same as the cross-sectional area of the duct at the fan. The movement of the louvres simultaneously in the same direction to deflect the airflow, Fig. 3 (not shown), will produce substantially an equivalent cross-sectional area at the louvre outlet. In an alternative embodiment the hub is cylindrical and the outer wall of the duct between the fan and the louvres is flared outwardly or both hub and outer wall may be flared.
GB788158A 1958-03-11 1958-03-11 Improvements in or relating to aircraft Expired GB869632A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB788158A GB869632A (en) 1958-03-11 1958-03-11 Improvements in or relating to aircraft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB788158A GB869632A (en) 1958-03-11 1958-03-11 Improvements in or relating to aircraft

Publications (1)

Publication Number Publication Date
GB869632A true GB869632A (en) 1961-06-07

Family

ID=9841582

Family Applications (1)

Application Number Title Priority Date Filing Date
GB788158A Expired GB869632A (en) 1958-03-11 1958-03-11 Improvements in or relating to aircraft

Country Status (1)

Country Link
GB (1) GB869632A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3369773A (en) * 1965-08-12 1968-02-20 Gen Electric Swept vane louver system
GB2290062A (en) * 1994-06-06 1995-12-13 Rolls Royce Plc Mechanism for operating a cascade of variable pitch thrust vectoring vanes
EP4361036A1 (en) 2022-10-28 2024-05-01 AIRBUS HELICOPTERS DEUTSCHLAND GmbH A rotorcraft with a ducted tail rotor supported by a stator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3369773A (en) * 1965-08-12 1968-02-20 Gen Electric Swept vane louver system
GB2290062A (en) * 1994-06-06 1995-12-13 Rolls Royce Plc Mechanism for operating a cascade of variable pitch thrust vectoring vanes
GB2290062B (en) * 1994-06-06 1998-05-13 Rolls Royce Plc Mechanism for operating a cascade of variable pitch vanes
EP4361036A1 (en) 2022-10-28 2024-05-01 AIRBUS HELICOPTERS DEUTSCHLAND GmbH A rotorcraft with a ducted tail rotor supported by a stator

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