patrol helicopter

  1. flateric

    McDonnell Aircraft Model 73

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    • flateric
    • Thread
    • 1950 anti-submarine warfare asw cold war early 1950s korean war mcdonnell mcdonnell aircraft corporation patrol helicopter u.s. navy xhp competition united states united states navy
    • Replies: 0
    • Forum: Secret Postwar Aircraft Projects
  2. Stargazer

    US Navy XHP (Experimental Helicopter - Patrol) competition

    In early 1950, the following companies submitted these designs to a Navy specification calling for an HP class (Patrol) helicopter with ASW (anti-submarine warfare) capability, a brand new mission for the helicopter at the time. None was selected in the end (source: Spangenberg Index, April...
    • Stargazer
    • Thread
    • anti-submarine warfare bell d-104 cold war curtiss-wright p-592 gyrodyne 9 helidyne hughes 212 mcdonnell model 73 patrol helicopter piasecki pd-22 piasecki ph-26 sikorsky xhps u.s. navy xhp competition
    • Replies: 68
    • Forum: Secret Postwar Aircraft Projects
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