EP0403501A1 - Radfahrwerk mit schnellem wechsel - Google Patents

Radfahrwerk mit schnellem wechsel

Info

Publication number
EP0403501A1
EP0403501A1 EP89902486A EP89902486A EP0403501A1 EP 0403501 A1 EP0403501 A1 EP 0403501A1 EP 89902486 A EP89902486 A EP 89902486A EP 89902486 A EP89902486 A EP 89902486A EP 0403501 A1 EP0403501 A1 EP 0403501A1
Authority
EP
European Patent Office
Prior art keywords
aft
fore
tubes
landing gear
landing
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.)
Withdrawn
Application number
EP89902486A
Other languages
English (en)
French (fr)
Other versions
EP0403501A4 (en
Inventor
Charles E. Davis
J. Robert Duppstadt
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.)
Bell Helicopter Textron Inc
Original Assignee
Bell Helicopter Textron Inc
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 Bell Helicopter Textron Inc filed Critical Bell Helicopter Textron Inc
Publication of EP0403501A1 publication Critical patent/EP0403501A1/de
Publication of EP0403501A4 publication Critical patent/EP0403501A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C25/00—Alighting gear
    • B64C25/02—Undercarriages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C25/00—Alighting gear
    • B64C25/32—Alighting gear characterised by elements which contact the ground or similar surface 
    • B64C2025/325—Alighting gear characterised by elements which contact the ground or similar surface  specially adapted for helicopters

Definitions

  • the present invention comprises a wheel landing gear assembly designed as a quick change replacement for a skid landing gear assembly on a helicopter.
  • the wheel landing gear assembly attaches to the helicopter at the same structural saddles used for the attaching skid landing gear to the aircraft. Therefore, the present invention provides an alternate wheel landing gear assembly for a helicopter without adding special landing gear support structure other than minor brace and brake fittings.
  • the quick change wheel landing gear assembly provides a ready means for back-fitting existing skid gear helicopters with a wheel landing gear system. Thus, new helicopters can be built without costly and heavy additional structures for mounting an alternate landing gear system.
  • An alternate configuration includes shorter fore and aft tubes, not attached to the rear cross tube, but anchored at the back end to fittings on the main helicopter beams.
  • a full length aft cross tube is used and is stabilized with drag braces from the ends of the fore and aft tubes to near the rear wheels on the cross tube.
  • nose gear loads are absorbed by bending deflection of the fore and aft longitudinal tubes.
  • a resilient spring in the nose gear may be used to absorb energy in conjunction with the deflection of the longitudinal tubes.
  • landing gear assembly 10 provides a quick means for back-fitting existing skid gear helicopters with a wheel landing gear system without requiring major costly and heavy additional mounting structures, landing gear assembly 10 eliminates the previous weight and cost penalties incurred when providing wheels for helicopters equipped with skid landing systems.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Details Of Gearings (AREA)
  • Vibration Prevention Devices (AREA)
  • Arrangement Of Transmissions (AREA)
  • Tires In General (AREA)
  • Devices For Checking Fares Or Tickets At Control Points (AREA)
EP19890902486 1988-12-08 1988-12-08 Quick change wheel landing gear Withdrawn EP0403501A4 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1988/004319 WO1990006257A1 (en) 1988-12-08 1988-12-08 Quick change wheel landing gear

Publications (2)

Publication Number Publication Date
EP0403501A1 true EP0403501A1 (de) 1990-12-27
EP0403501A4 EP0403501A4 (en) 1991-05-08

Family

ID=22209028

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890902486 Withdrawn EP0403501A4 (en) 1988-12-08 1988-12-08 Quick change wheel landing gear

Country Status (9)

Country Link
EP (1) EP0403501A4 (de)
JP (1) JP2767305B2 (de)
KR (1) KR0163950B1 (de)
AR (1) AR245664A1 (de)
BR (1) BR8807883A (de)
CA (1) CA2003186A1 (de)
IL (1) IL92594A (de)
MX (1) MX174284B (de)
WO (1) WO1990006257A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19701404C1 (de) * 1997-01-17 1998-02-26 Eurocopter Deutschland Radlandewerk für Hubschrauber

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2108747A (en) * 1935-05-31 1938-02-15 Glover William Gordon Launching and beaching of aircraft
US2396189A (en) * 1943-05-03 1946-03-05 William N Millar Aircraft float
US2582426A (en) 1947-10-18 1952-01-15 Goodrich Co B F Variable rate spring suspension
US2909342A (en) 1954-06-04 1959-10-20 Menasco Mfg Company Landing gear for helicopters
US3144223A (en) * 1962-04-11 1964-08-11 Hiller Aircraft Company Inc Aircraft landing gear
US3520497A (en) 1968-06-05 1970-07-14 Rotorway Inc Framework for a helicopter

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Conway H. G.: "Landing Gear Design" & Hall Ltd., London, U. K., 37 Essex street *
See also references of WO9006257A1 *

Also Published As

Publication number Publication date
WO1990006257A1 (en) 1990-06-14
BR8807883A (pt) 1990-11-27
KR0163950B1 (ko) 1998-12-01
IL92594A (en) 1992-08-18
CA2003186A1 (en) 1990-06-08
MX174284B (es) 1994-05-03
IL92594A0 (en) 1990-08-31
JP2767305B2 (ja) 1998-06-18
EP0403501A4 (en) 1991-05-08
KR900009392A (ko) 1990-07-04
JPH03503148A (ja) 1991-07-18
AR245664A1 (es) 1994-02-28

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Legal Events

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