The US Marines use the Osprey.
The V22 Osprey was designed by Bell-Boeing aircraft. Bell and Boeing combined together and teamed up to design this military aircraft. The joint efforts of these companies led to the design and development of the V22 Osprey.
What do you mean? The osprey is an aircraft that takes off by angling thrust downward, and then slowly angling it back to pick up speed and fly like a normal aircraft. A harrier does the same, only the harrier uses thrust nozzles, and the osprey rotates the entire engine. I have no idea how it stabilizes.
Bald Eagles, Golden Eagles, and Goshawks.
During the Vietnam War, the US Army had the largest helicopter force in the United States.
The USMC have been using the Osprey since 2007, Their 'flight readiness ' rate is improving all the time and Marines love this aircraft.
Answer Yes. If you refer to Janes All the World's Aircraft or other reference and it lists the total aircraft in a countries military, the number would include all branches of service. Is that your Question?
Some military aircraft can truly fly backwards, most common examples would be the Harrier or Osprey. Some acrobatic aircraft can appear to fly backwards, usually by some form of controlled stall maneuver, but this does not actually fit the definition of "flying backwards".
Aircraft built by the military to refuel other capable aircraft (other military craft basically) in midair.
There are no current military aircraft with 6 engines.
Military aircraft are built to fight or to aid in a war effort.
military aircraft are used for military purposes i.e combat, military cargo, extraction of troops and etc.. civil aircraft are ones use for commercial airlines for example. British airways and Qantas.
If you're looking for military aircraft parts, you can find them available for purchase on many different websites. Some sites that offer military aircraft parts are Military Aircraft Parts, DIMO Corporation, and Skylink.