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Coffin corner (also known as the aerodynamic ceiling [1] or Q corner) is the region of flight where a fast but subsonic fixed-wing aircraft's stall speed is near the critical Mach number, making it very difficult to keep an airplane in stable flight. Because the stall speed is the minimum speed required to maintain level flight, any reduction ...
One problem with the aircraft was that at higher altitudes, where the pure turbojet engines could produce good fuel economy, the wing was very compromised. At the top of the B-47's envelope, about 35,000 feet (11,000 m), it was in "coffin corner". [49]
Flying coffin is a pejorative term for an aircraft perceived by crews or the public to have a poor safety record or low combat ... Coffin corner (disambiguation)
This narrow window is called the "coffin corner", [42] [43] because breaching either limit was likely to cause airflow separation at the wings or tail. [44] For most of the time on a typical mission the U-2 was flying less than five knots (6 mph; 9 km/h) above stall speed.
The C-17 Globemaster has also been used to help in disaster relief efforts around the world.
Hence, the aircraft will not have any excess capacity to climb further. Stated technically, it is the altitude where the maximum sustained (with no decreasing airspeed) rate of climb is zero. Compared to service ceiling, the absolute ceiling of commercial aircraft is much higher than for standard operational purposes.
The aircraft can also fly at up to Mach 1.1 at sea level, but no faster. This outer surface of the curve represents the zero-extra-power condition . All of the area under the curve represents conditions that the plane can fly at with power to spare, for instance, this aircraft can fly at Mach 0.5 at 30,000 feet (9,100 m) while using less than ...
Expert engineering, the size of the aircraft and seatbelts all probably played a role in protecting people aboard a passenger jet that flipped over at an airport in Toronto, experts said Monday ...