| 摘要 |
13 QUICK CHANGE WHEEL LANDING GEAR A quick change wheel landing gear assembly (10) is provided as a replacement for a skid landing gear system on a vertical take-off and lending aircraft. The wheel landing gear assembly (10) includes a pair of spacedapart fore and aft longitudinal tubes (16, 18) attached to a pair of short, spaced-apart cross tubes (20, 22) that are adapted to mount on the structural saddles (12, 14) used to mount the skid landing gear on the underside of the aircraft. The longitudinal tubes (16, 18) are connected together at the forward end for mounting a fully swiveling nose gear (26) thereto. Aft main gear wheels (30, 32) are mounted on cantilever landing gear legs (34, 36) that extend laterally from the longitudinal tubes (16, 18) adjacent the aft cross tube (22). Landing loads on the landing gear may be absorbed by resilient springs (25), deflection of the gear legs (34, 36) and the aft cross tube (22), torsion of the fore and aft longitudinal tubes (16, 18), or any combination of these actions. Resilient springs (25) are used in the landing gear assembly (10) to attenuate fatigue stresses in conjunction with the deflection of the longitudinal (16, 18) and cross tubes (20, 22) of the gear assembly (10). The wheel landing gear assembly (10) is designed to be mounted on existing aircraft structural saddles and to retain many of the desirable features of a said landing gear system, including low cost and easy maintenance.
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