Before revision: In aerodynamics, the flight envelope, service envelope, or performance envelope of an aircraft or spacecraft refers to the capabilities of a design in terms of airspeed and load factor or atmospheric density, often simplified to altitude for Earth-borne aircraft .§23.333 Flight envelope Flight envelope – diagram The term is somewhat loosely applied, and can also refer to other measurements such as maneuverability.
After revision: In aerodynamics, the flight envelope, service envelope, or performance envelope of an aircraft or spacecraft refers to the capabilities of a design in terms of airspeed and load factor or atmospheric density, often simplified to altitude .§23.333 Flight envelope Flight envelope – diagram The term is somewhat loosely applied, and can also refer to other measurements such as maneuverability.