constand
Thread Starter
Join Date: Dec 2008
Location: above the clouds
Posts: 99
Likes: 0
Received 0 Likes
on
0 Posts
constand
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.
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.
Join Date: Jun 2006
Location: Europe
Posts: 716
Likes: 0
Received 0 Likes
on
0 Posts
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.
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.
Last edited by bfisk; 13th Nov 2009 at 18:05.
