С.N.Blue One Of A Kind
The Bell Boeing V-22 Osprey is an American multi-mission, military, tiltrotor aircraft with both a vertical takeoff and landing VTOL, and short takeoff and landing STOL capability. It is designed to combine the functionality of a conventional helicopter with the long-range, high-speed cruise performance of a turboprop aircraft.
The V-22 originated from the United States Department of Defense Joint-service Vertical take-off/landing Experimental JVX aircraft program started in 1981. The team of Bell Helicopter and Boeing Helicopters was awarded a development contract in 1983 for the tiltrotor aircraft. The Bell Boeing team jointly produce the aircraft.[4] The V-22 first flew in 1989, and began flight testing and design alterations; the complexity and difficulties of being the first tiltrotor intended for military service in the world led to many years of development.
The United States Marine Corps began crew training for the Osprey in 2000, and fielded it in 2007; it is supplementing and will eventually replace their CH-46 Sea Knights. The Osprey's other operator, the U.S. Air Force, fielded their version of the tiltrotor in 2009. Since entering service with the U.S. Marine Corps and Air Force, the Osprey has been deployed in both combat and rescue operations over Iraq, Afghanistan and Libya.
The Osprey is the world's first production tiltrotor aircraft, with one three-bladed proprotor, turboprop engine, and transmission nacelle mounted on each wingtip. It is classified as a powered lift aircraft by the Federal Aviation Administration.[88] For takeoff and landing, it typically operates as a helicopter with the nacelles vertical and rotors horizontal. Once airborne, the nacelles rotate forward 90° in as little as 12 seconds for horizontal flight, converting the V-22 to a more fuel efficient, higher speed turboprop aircraft. STOL rolling-takeoff and landing capability is achieved by having the nacelles tilted forward up to 45°.[68] Other orientations are possible, such as the "80 Jump" takeoff which uses nacelles at 80° to quickly achieve high altitude and speed.[89]
Composite materials make up 43% of the V-22's airframe. The proprotors blades also use composites.[68] For compact storage and transport, partly on Marine launch ships, the V-22's rotors fold in 90 seconds and its wing rotates to align, front-to-back, with the fuselage.[90] Due to the requirement of folding the rotors their 38 feet diameter is 5 feet less than optimal for vertical takeoff, resulting in high disk loading.[89] Most Osprey missions use fixed wing flight 75 percent or more of the time, reducing wear and tear on the aircraft and reducing operational costs. This fixed wing flight is higher than typical helicopter missions allowing longer range line-of-sight communications for improved command and control.[24]
The V-22's two Rolls-Royce AE 1107C engines are connected by drive shafts to a common central gearbox so that one engine can power both proprotors if an engine failure occurs.[53] However, if a proprotor gearbox fails that proprotor cannot be feathered, and both engines must be stopped before an emergency landing.[52] The aircraft's autorotation characteristics are poor partly because the rotors have low inertia.[52] Boeing has stated the V-22 design loses 10% of its vertical lift over a Tiltwing design when operating in helicopter mode because of airflow resistance due to the wings, but that the Tiltrotor design has better short takeoff and landing performance.[91] The rotorwash usually prevents usage of the starboard door in hover, and the rear ramp is used for rappelling and hoisting.[52].
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Исполнитель: С.N.Blue
Название песни: One Of A Kind
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Дата добавления: 2015-03-15
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On the floor, you're moving in a way I can't ignore
I'm in heat, I caught a glimpse and now I'm at your feet
I can't escape it, there's nowhere to hide
This feeling I got I can't deny
I don't know your name but it's all the same
Coz I can feel your heart and now I'm sure
Don't you know, there's nothing I can do,
I gotta get to know you
I have to see this through I want it all
I gotta let you know, this feeling is so true
Coz I know that you're One of a kind
And I can't get you out of my mind
All alone, thought I was doing better on my own
Then you came, and now my life will never be
The same no~no~
I can't escape it, there's nowhere to hide
This feeling I got I can't deny
I don't know your name but it's all the same
Coz I can feel your heart and now I'm sure
Don't you know, there's nothing I can do,
I gotta get to know you
I have to see this through I want it all
I gotta let you know, this feeling is so true
Coz I know that you're One of a kind
And I can't get you out of my mind
What would you say if I was to walk up to you
Would you feel the same if I told you this feeling is true
I wonder what you would do
Don't you know, there's nothing I can do,
I gotta get to know you
Don't you know, there's nothing I can do,
I gotta get to know you
I have to see this through I want it all
I gotta let you know, this feeling is so true
Coz I know that you're One of a kind
And I can't get you out of my mind
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