constand

[annita]

Morning to all.
I understand that by keeping a constand IAS/CAS or Mach , a change of temp. will have no affect.
If you are maintaining constand TAS though and an increase in temp takes place , how would that affect the Mach and IAS?

Thank you.

[bfisk]

Edit:

Both CAS/IAS and Mach no will decrease.


Mach: when temp increases, the local speed of sound increases. Since your TAS is constant, it is now a lower percentage of LSS.
IAS/CAS: when temp increases, air density decreases. With decreasing air density, IAS/CAS reduces for a given TAS.