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Compared to service ceiling, the absolute ceiling of commercial aircraft is much higher than for standard operational purposes. In the Concorde 's case, it was tested to be 68,000 ft (21 km; 12.9 mi).
A sectional chart is a two-sided chart created from a Lambert Conformal Conic Projection [1] with two defined standard parallels. The scale is 1:500,000, with a contour interval of 500 feet. The size of each sectional is designed to be "arm's width" when completely unfolded.
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, at a given gross weight and G-force loading. In this region of flight, it is very difficult to keep an airplane in stable flight.
The first production unit was rolled out on June 13, 2017, as the four test aircraft have flown 550 hours and a fifth aircraft will join in summer 2017. [14] In October 2017, test aircraft have completed more than 1,200 flight hours over 600 flights, for a certification expected by the end of 2017 or in early 2018. [15]
For instance, the aircraft described by the black altitude envelope on the right can fly at altitudes up to about 52,000 feet (16,000 m), at which point the thinner air means it can no longer climb. 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 ...
Boeing was left with a size and range gap in its product line between the 767-300ER and the 747-400. ... Ceiling [208] 43,100 ft (13,100 m) ... Aircraft of comparable ...
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Although the MD-11 program was launched in 1986, McDonnell Douglas had started to search for a DC-10 derivative as early as 1976. Two versions were considered then: a DC-10-10 with a fuselage stretch of 40 feet (12 m) and a DC-10-30 stretched by 30 feet (9.1 m).