The weight of the airframe determines, to some extent, how much fuel is needed for any one flight.
But some analysts have said the U.S. might try to arm the airframe at some point in the future.
Special paints are needed to protect the airframe, over a wide range of temperatures, from wind, weather, ultraviolet radiation and exhaust fumes.
The airframe technology to be transferred is roughly equivalent to the F-15 technology, which the Japanese received from the United States roughly 10 years ago.
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Ryanair said its 90-minute flight at 41, 000ft showed there was "no visible volcanic ash cloud or evidence of ash on the airframe, wings or engines".
If the plane's lone engine were to punk out over the mountains, the pilot could pull a parachute that floats the airframe and occupants to earth at 10mph.
Like the paper-clip, the airframe and its alloy skin are stressed first in one direction as the cabin is pressurised while climbing to its cruising altitude, and then in the opposite direction when depressurised during descent for landing.
Once a design is set, different bits of the manufacturing process are tried out on computer: a virtual pipe-bending machine, for instance, makes sure that the fuel lines which snake their way through the airframe can be created without wrapping themselves around the machine and bringing it to a halt.
The latest installment in this story is the versatile P-8A patrol plane developed for the Navy from the 737 airframe, and the high-capacity Wideband Global Satcom system developed for the Air Force from commercial satellite technology.
"The circumstances of the crash have raised several issues that go well beyond the widely discussed matter of airframe icing, " the NTSB's acting chairman, Mark Rosenker, said in a statement on the findings.
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The Cirrus single has huge windows for passenger comfort and an airframe parachute, in the unlikely event that the aircraft's Williams FJ33 engine flames out.
These are by far the most technologically advanced elements of an airframe and they were outsourced to a Japanese consortium led by Mitsubishi Heavy Industries.
The new planes were supposed to be agile, stealthy and versatile a single-engine airframe produced in three variants that could be sold by the thousands both at home and abroad.
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Buffenbarger chose an interesting tack, in a room full of executives from major airframe manufacturers and suppliers with whom the IAM regularly negotiates.
With a global sales and support presence, its products are offered by virtually every fixed- and rotor-wing airframe manufacturer in business aviation, and are installed aboard the world's four largest fractional ownership fleets.
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Cirrus aircraft already come equipped with a full-airframe parachute that can be deployed in an emergency, and the system has been credited with saving dozens of lives.
Novel features included a composite fiberglass airframe, a glass-panel cockpit and a parachute designed to float the airplane to a safe landing in an emergency.
It is a new airframe it first flew last year and it certainly is large enough for the job, able to accommodate 27 passengers and a crew of 2.
Notice that no airframe or engine manufacturer elects to criticize its competition when such problems arise, knowing full well the character of bringing a new aircraft online.
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