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2. List of United States military helicopters - Wikipedia

   en.wikipedia.org/wiki/List_of_United_States...

   used as the official helicopters of the President of the United States Marine One. 1959. 1961. 1500. Sikorsky S-61R. Medium-lift transport/SAR helicopter. Sikorsky Aircraft Corporation. The S-61R served in the United States Air Force and in the United States Coast Guard. 1959.

3. List of ultralight helicopters - Wikipedia

   en.wikipedia.org/wiki/List_of_ultralight_helicopters

   Yellow CoAx Heli. China. Single seat coaxial heli [ 6] Ultrasport 254. United States. First ultralight. Curti Zefhir. Italy. DF Helicopters DF334.

4. Cobi (building blocks) - Wikipedia

   en.wikipedia.org/wiki/Cobi_(building_blocks)

   Cobi is a Polish toy company with its headquarters in Warsaw, Poland. The company was founded in 1987, producing puzzles and board games. In 1992, it started producing building blocks with an interlocking stud and tube system, compatible with Lego blocks. Due to their popularity, the company switched to mostly producing building block sets.

5. Sikorsky R-4 - Wikipedia

   en.wikipedia.org/wiki/Sikorsky_R-4

   Sikorsky R-4. In this image taken in 1944, one of Langley Research Center's Sikorsky YR-4B/HNS-1 helicopters is seen in the 30 × 60 full-scale tunnel. The Sikorsky R-4 is a two-seat helicopter that was designed by Igor Sikorsky with a single, three-bladed main rotor and powered by a radial engine. The R-4 was the world's first large-scale mass ...

6. Lists of military aircraft of the United States - Wikipedia

   en.wikipedia.org/wiki/Lists_of_military_aircraft...

   List of United States Air Force aircraft designations (1919–1962) List of United States Navy aircraft designations (pre-1962) List of United States Army aircraft designations (1956–1962) List of United States Tri-Service aircraft designations. List of U.S. DoD aircraft designations. List of undesignated military aircraft of the United States.

7. Bell Boeing V-22 Osprey - Wikipedia

   en.wikipedia.org/wiki/Bell_Boeing_V-22_Osprey

   Variants. Bell Boeing Quad TiltRotor. The Bell Boeing V-22 Osprey is an American multi-mission, tiltrotor military aircraft with both vertical takeoff and landing ( VTOL) and short takeoff and landing ( STOL) capabilities. It is designed to combine the functionality of a conventional helicopter with the long-range, high-speed cruise performance ...

8. Sikorsky CH-53 Sea Stallion - Wikipedia

   en.wikipedia.org/wiki/Sikorsky_CH-53_Sea_Stallion

   The Sikorsky CH-53 Sea Stallion is a heavy lift military transport helicopter. The CH-53A carries a crew of four; pilot, copilot, crew chief, and an aerial observer. It can carry various payloads, including up to 38 fully-equipped troops, 24 litters with medical attendants, an internal cargo load of 8,000 pounds (3,600 kg), or an external load ...

9. Military helicopter - Wikipedia

   en.wikipedia.org/wiki/Military_helicopter

   Military helicopter. A UH-60 Black Hawk operated by the Royal Jordanian Air Force. A military helicopter is a helicopter that is either specifically built or converted for use by military forces. A military helicopter's mission is a function of its design or conversion. The most common use of military helicopters is transport of troops, but ...