An aircraft retractable undercarriage comprising a landing wheel strut having pivotally articulated upper and lower sections, a landing wheel carried at the lower end of said lower section, said upper section being ipivotally mounted at its upper end upon said aircraft, a worm wheel sector fixed to said lower section concentrically with the pivot axis of said articulated connection, a worm meshing with said sector, a bearing rotatably mounting said worm upon said upper section to be positionally fixed thereto and to have its thrust axis directed generally upwardly toward the upper pivoted end of said upper strut section with the strut in extended position, a prime mover mounted upon said upper section adjacent the position of said worm and operatively connected' to the latter, and strut brace means pivotally connected to said strut and extending laterally therefrom into pivotal connection with said aircraft at a position spaced from said pivotal connection of said upper strut section.
Article navigation
