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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 ...
Flight envelope is one of a number of related terms that are used in a similar fashion. It is perhaps the most common term because it is the oldest, first being used in the early days of test flight. It is closely related to more modern terms known as extra power and a doghouse plot which are different ways of describing the flight envelope of ...
The service ceiling is the maximum altitude of an aircraft during normal operations. Specifically, it is the density altitude at which flying in a clean configuration , at the best rate of climb airspeed for that altitude and with all engines operating and producing maximum continuous power, will produce a given rate of climb.
In philately, an imprinted stamp is a stamp printed onto a piece of postal stationery such as a stamped envelope, postal card, letter sheet, letter card, aerogram or wrapper. [1] The printing may be flat upon the surface of the paper, or embossed with a raised relief. [2] An imprinted stamp is also known as unadhesive stamp [3] or indicium. [1]
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The max altitude line on this aircraft's flight envelope prevents it from having a coffin corner. However, you can imagine where it would be if you extrapolate the stall line up along its trajectory and do the same for the "top speed" (should read "mach limit") line (ie extend the stall line up and right and extend the mach line straight up).
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