GB448983A - Improvements in undercarriages for aircraft - Google Patents

Improvements in undercarriages for aircraft

Info

Publication number
GB448983A
GB448983A GB30483/35A GB3048335A GB448983A GB 448983 A GB448983 A GB 448983A GB 30483/35 A GB30483/35 A GB 30483/35A GB 3048335 A GB3048335 A GB 3048335A GB 448983 A GB448983 A GB 448983A
Authority
GB
United Kingdom
Prior art keywords
wheel
torsion
lever
arm
arrangement
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
GB30483/35A
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.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche AG
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 Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Priority to GB30483/35A priority Critical patent/GB448983A/en
Publication of GB448983A publication Critical patent/GB448983A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/02—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for reversing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C25/00—Alighting gear
    • B64C25/02—Undercarriages
    • B64C25/08—Undercarriages non-fixed, e.g. jettisonable
    • B64C25/10—Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Springs (AREA)

Abstract

448,983. Retractable undercarriages for aircraft. PORSCHE GES., DR. ING. H.C. F., 24, Kronenstrasse, Stuttgart, Germany. Nov. 4, 1935, Nos. 30483 and 30484. Convention dates, Nov. 2, 1934 and Nov. 3, 1934. [Class 4] An aircraft undercarriage employing torsion springs is adapted to be retracted without increasing the tension of the torsion springs. In one form, Fig. 1, wheel 1 is carried by a member 2 connected to the aeroplane body by parallel motion links 3, 4 of which the link 4 is secured to one end of a longitudinally disposed torsion tube 7. The after end of tube. 7 is journalled in a fixed part of the body and carries a lever 9, Fig. 2, linked by a connecting rod 12 to a crank 11 rotatable by worm gearing under the pilot's control. Retraction of wheel 1 is effected by rotating crank 11, the arrangement being such that in both the retracted and extended positions of the device crank 11 is at a dead centre position with respect to connecting rod 12. A similar arrangement is described in which wheel 1 is carried by parallel motion links arranged in a fore-and-aft plane, to torsion rods in this form extending transversely within the wings. In a modified arrangement, Figs. 5 and 6, wheel 1 is carried by a rocking lever 3a pivotally mounted intermediate its length on a laterally swingable arm 22, the pivot mounting comprising a friction damper 21. Lever 3a is connected by a link 12 and a ball joint 23 to a lever 11a secured to a torsion tube 7. Arm 22 is rotated for retraction of wheel 1 by means of a shaft 22a and worm gearing controlled by the pilot. Ball joint 23 is disposed coaxially with shaft 22a so that retraction of wheel 1 does not impose any stress on the torsion rod. As shown, rod 7 and rocking lever 3a are disposed parallel to the plane of symmetry of the craft but such arrangement is not essential and either member may be set at an angle to the fore-and-aft axis provided that the position of ball joint 23 with respect to the swinging axis of arm 22 is not affected. According to a further modification, wheel 1 is arranged to swing inwardly instead of outwardly as shown in Fig. 4, so as to house the wheel supporting members within the underside of the aeroplane body. Torsion rod 7 is in this case mounted substantially above the swinging axis of arm 22 and within the aeroplane body.
GB30483/35A 1935-11-04 1935-11-04 Improvements in undercarriages for aircraft Expired GB448983A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB30483/35A GB448983A (en) 1935-11-04 1935-11-04 Improvements in undercarriages for aircraft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB30483/35A GB448983A (en) 1935-11-04 1935-11-04 Improvements in undercarriages for aircraft

Publications (1)

Publication Number Publication Date
GB448983A true GB448983A (en) 1936-06-18

Family

ID=85988090

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30483/35A Expired GB448983A (en) 1935-11-04 1935-11-04 Improvements in undercarriages for aircraft

Country Status (1)

Country Link
GB (1) GB448983A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807667A (en) * 1971-07-05 1974-04-30 Messier Hispano Sa Lateral lever fuselage undercarriage train for aircraft
EP2738088A1 (en) * 2012-11-30 2014-06-04 Airbus Operations Device for intermediate fastening between an aircraft fuselage and an aircraft undercarriage
US9555877B2 (en) 2012-02-24 2017-01-31 Safran Landing Systems Uk Ltd Landing gear

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807667A (en) * 1971-07-05 1974-04-30 Messier Hispano Sa Lateral lever fuselage undercarriage train for aircraft
US9555877B2 (en) 2012-02-24 2017-01-31 Safran Landing Systems Uk Ltd Landing gear
EP2738088A1 (en) * 2012-11-30 2014-06-04 Airbus Operations Device for intermediate fastening between an aircraft fuselage and an aircraft undercarriage
FR2998868A1 (en) * 2012-11-30 2014-06-06 Airbus Operations Sas INTERMEDIATE FASTENING DEVICE BETWEEN AN AIRCRAFT FUSELAGE AND AN AIRCRAFT LANDING TRAIN

Similar Documents

Publication Publication Date Title
SE7601399L (en) RETRABLE, LINKED AIRPORT FROM AIRCRAFT
GB448983A (en) Improvements in undercarriages for aircraft
US2021439A (en) Retractable landing gear
US2666602A (en) Aircraft wing mounting assembly
GB860432A (en) Retractable undercarriages for aircraft
ES321869A1 (en) A retractable mounting device for rolling wheels. (Machine-translation by Google Translate, not legally binding)
US2550028A (en) Retractable landing gear
GB490151A (en) Improvements relating to folding wings for aeroplanes
US2936966A (en) Wing construction for high speed aircraft
US2069994A (en) Folding landing gear
US2938681A (en) Flying motor scooter
US2332844A (en) Retractable landing gear for airplanes
US2383845A (en) Device for operation of the controls of airplanes
GB538298A (en) Improvements in or relating to retractable undercarriages for aircraft
US2030293A (en) Retractable landing gear for geared propeller airplanes
GB440358A (en) Improvements relating to retractable undercarriages for aircraft
GB911121A (en) Improvements in and relating to aircraft undercarriages
US2097990A (en) Adjusting means for control surfaces
US2818124A (en) Helicopter blade mounting mechanism
US2065414A (en) Retractable landing gear
GB797105A (en) Retractable landing gear for aircraft
GB689114A (en) Improvements in or relating to retractable undercarriage for aircraft
US2551665A (en) Airplane cross-wind landing gear
US1001185A (en) Flying-machine.
US2110543A (en) Tail wheel structure