KEY CONCEPTS: International Standard Atmosphere, Atmosphere Models, Operating Speeds (EAS, CAS, TAS), Transition Altitude, Design Speeds, Optimum Level Speeds, Ceiling Performance, Cabin Pressure, Flight Envelopes, Supersonic Dash, Supersonic Acceleration. We conclude the chapter with flight envelopes at supersonic Mach number (§ 8.7), including dash speed, supersonic accelerations and propulsion limitations. We discuss the flight envelopes of subsonic transport aircraft and their limitations (§ 8.6), including the effects of the cabin pressure. We discuss the flight corridors at constant altitude and the ceiling performance airplanes (§ 8.5).
For the steady-state level flight we derive two optimal conditions: minimum drag and minimum power (§ 8.4). We give several operating air speed definitions (§ 8.2), as well as design speeds (§ 8.3) and the techniques required to measure them. We present various atmospheric models (§ 8.1), standard as well as non-standard.
This chapter deals with flight envelopes in the speed-altitude space.
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