Aerospace Engineering e-Mega Reference

2.7.10 Limiting Factors on Flight Envelopes

The envelopes discussed only take into account the basic aerodynamic and propulsion characteristics, but not other

factors, such as structural limits of the aircraft, aero-thermodynamic heating, and other forcing at the extreme flight

conditions. Some of the limitations are described in this section, and schematically shown in Figure 2.7-9. There are

four phenomena that need consideration: intake buzz, wing flutter, skin temperature limits and blade stall. The

thrust limits are obvious. Other factors, such as cabin pressurization limits, are less so.

The intake buzz is the interaction between the oblique