United States military helicopters

1975 attack helicopter family by Hughes

series of military utility transport helicopters

1961 utility helicopter family by Bell

military transport helicopter family by Boeing Vertol

1965 attack helicopter family by Bell

anti-submarine helicopter family by the Sikorsky Aircraft Corporation

attack helicopter prototype by Boeing and Sikorsky

1967 scout helicopter series by Bell Helicopter

attack helicopter model by Bell

1964 military helicopter family

1942 utility helicopter family by Sikorsky

scout helicopter family

1949 utility helicopter family by Sikorsky

1959 helicopter family by Sikorsky

military transport helicopter model by the Sikorsky Aircraft Corporation

special operations helicopter series by Hughes

series of twin-engine attack helicopters

military utility helicopter model by Bell

1958 military transport helicopter family

military transport helicopter family

utility helicopter family by Sikorsky

1943 multi-role helicopter by Sikorsky

heavy lift helicopter

airlift helicopter series by Sikorsky

1967 attack helicopter series by Lockheed

1948 utility helicopter family by Hiller

proposed high-speed scout and attack compound helicopter

multi-role helicopter series by the Sikorsky Aircraft Corporation

1953 rescue helicopter family by Kaman

1959 military helicopter family by the Kaman Corporation

1956 multi-role helicopter family by Hughes

experimental gyrodyne by Sikorsky and Boeing

search and rescue helicopter series by the Sikorsky Aircraft Corporation

individual United States Navy helicopter flown in support of NASA

multi-role helicopter series by the Sikorsky Aircraft Corporation

1943 light helicopter family

military transport helicopter family by Piasecki

reconnaissance armed helicopter prototype

utility helicopter series by Piasecki

military helicopter series by Bell

1975 prototype attack helicopter model by Bell Helicopter

military helicopter family by the Sikorsky Aircraft Corporation

experimental aircraft by Piasecki Aircraft

1958 transport helicopter family

experimental co-axial compound helicopter

attack helicopter series by McDonnell Douglas

1974 utility helicopter prototype model by Boeing Vertol

prototype attack helicopter

experimental attack helicopter

anti-submarine naval helicopter

military helicopter series of the MD 500 family by Hughes and MD Helicopters

1962 helicopter prototype model by Bell Helicopter

unmanned aerial vehicles developed by Sikorsky Aircraft

prototype attack helicopter

multi-role helicopter family by Sikorsky

variant of the AgustaWestland AW101

1959 anti-submarine unmanned helicopter family by Gyrodyne

experimental helicopter with intermeshing rotors

experimental helicopter, U.S. Army Air Forces, 1941

research helicopter built by Bell Helicopter