GB803419A - Improvements in or relating to boundary layer control - Google Patents

Improvements in or relating to boundary layer control

Info

Publication number
GB803419A
GB803419A GB31961/54A GB3196154A GB803419A GB 803419 A GB803419 A GB 803419A GB 31961/54 A GB31961/54 A GB 31961/54A GB 3196154 A GB3196154 A GB 3196154A GB 803419 A GB803419 A GB 803419A
Authority
GB
United Kingdom
Prior art keywords
flap
cusp
aerofoil
boundary layer
layer control
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
GB31961/54A
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.)
FRIEDRICH OTTO RINGLEB
Original Assignee
FRIEDRICH OTTO RINGLEB
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 FRIEDRICH OTTO RINGLEB filed Critical FRIEDRICH OTTO RINGLEB
Publication of GB803419A publication Critical patent/GB803419A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
    • G01M9/08—Aerodynamic models
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C21/00—Influencing air flow over aircraft surfaces by affecting boundary layer flow
    • B64C21/02—Influencing air flow over aircraft surfaces by affecting boundary layer flow by use of slot, ducts, porous areas or the like
    • B64C21/06—Influencing air flow over aircraft surfaces by affecting boundary layer flow by use of slot, ducts, porous areas or the like for sucking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C2230/00—Boundary layer controls
    • B64C2230/04—Boundary layer controls by actively generating fluid flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C2230/00—Boundary layer controls
    • B64C2230/06—Boundary layer controls by explicitly adjusting fluid flow, e.g. by using valves, variable aperture or slot areas, variable pump action or variable fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C2230/00—Boundary layer controls
    • B64C2230/08—Boundary layer controls by influencing fluid flow by means of surface cavities, i.e. net fluid flow is null
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C2230/00—Boundary layer controls
    • B64C2230/24—Boundary layer controls by using passive resonance cavities, e.g. without transducers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/10—Drag reduction

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Rotary Pumps (AREA)
  • Reciprocating Pumps (AREA)

Abstract

803,419. Boundary layer control on aerofoils. RINGLEB, F. O. Nov. 4,1954 [March 30, 1954], No. 31961/54. Class 4. A surface past which fluid flows comprises a cusp designed so that the fluid forms a vortex in equilibrium in a cavity defined at least in part by the cusp. Fig. 2 shows an aerofoil 21 having a flap 22 pivoted to the aerofoil at 24. A cusp is formed at 23, defining the cavity with the flap. The Specification gives formulae for determining the characteristics and location of the cusp. Suction may be applied at 23a and at 25 by a suction source 26. A plate 15 normally nested as shown may be moved to position 15a to blank off the cavity. Fig. 4 shows an embodiment in which the aerofoil 41 has a cusp formed in a flap 43. Suction is applied at the trailing edge of the flap as shown by arrow 50, and a slot 42 is formed between the aerofoil and flap.
GB31961/54A 1954-03-30 1954-11-04 Improvements in or relating to boundary layer control Expired GB803419A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US803419XA 1954-03-30 1954-03-30

Publications (1)

Publication Number Publication Date
GB803419A true GB803419A (en) 1958-10-22

Family

ID=22156777

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31961/54A Expired GB803419A (en) 1954-03-30 1954-11-04 Improvements in or relating to boundary layer control

Country Status (1)

Country Link
GB (1) GB803419A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106840596A (en) * 2016-11-24 2017-06-13 中国空气动力研究与发展中心高速空气动力研究所 One kind is applied to Asia across supersonic Cavity Flow model in wind tunnel
RU2799109C1 (en) * 2023-03-23 2023-07-04 Федеральное автономное учреждение "Центральный аэрогидродинамический институт имени профессора Н.Е. Жуковского" (ФАУ "ЦАГИ") Method for studying deposition of drops on aerodynamic surface in air droplet flow and aerodynamic model for its implementation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106840596A (en) * 2016-11-24 2017-06-13 中国空气动力研究与发展中心高速空气动力研究所 One kind is applied to Asia across supersonic Cavity Flow model in wind tunnel
RU2799109C1 (en) * 2023-03-23 2023-07-04 Федеральное автономное учреждение "Центральный аэрогидродинамический институт имени профессора Н.Е. Жуковского" (ФАУ "ЦАГИ") Method for studying deposition of drops on aerodynamic surface in air droplet flow and aerodynamic model for its implementation
RU2799109C9 (en) * 2023-03-23 2024-01-30 Федеральное автономное учреждение "Центральный аэрогидродинамический институт имени профессора Н.Е. Жуковского" (ФАУ "ЦАГИ") Method for studying deposition of drops on aerodynamic surface in air droplet flow and aerodynamic model for its implementation

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