p-v engineering forum

  1. hesham

    P.V. Engineering and Piasecki Projects & Prototypes

    From USA, some Vertol earlier helicopters, PV-11 :utility helicopter developed from PV-2 for USN. PV-12 :was a large version of PV-14 also for USN,project only. PV-17 HRP-2 :was improved metal-clad version of HRP-1 tandem rotor helicopter with forward-angled transparent...
    • hesham
    • Thread
    • 20th century 21st century civil aviation cold war cold war ii helicopters p-v engineering forum piasecki aircraft corporation piasecki-venzie post-cold war united states united states air force united states army united states navy world war ii
    • Replies: 65
    • Forum: Secret Postwar Aircraft Projects
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