Compass updates
04-03-2015, 02:20 AM
#6491
Gets Weekends Off
Joined APC: Dec 2011
Posts: 146
Originally Posted by AluminumFoil
No it doesn't. It will increase.
You're climbing at a constant Mach. The speed of sound depends only on temperature; so as you climb, the speed of sound decreases and so would your TAS.
04-03-2015, 02:54 AM
#6492
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Joined APC: Dec 2012
Position: B767
Posts: 425
TAS increases with altitude. That's part of the reason we fly so high. Watch the TAS as you climb at .75- it increases
04-03-2015, 03:24 AM
#6493
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Joined APC: Nov 2011
Posts: 4,504
Tas increases and ias decreases with an increase in altitude
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04-03-2015, 04:41 AM
#6494
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Joined APC: Aug 2007
Position: I pilot
Posts: 2,049
TAS increases if you climb at a constant CAS. If you climb at a constant Mach, your TAS will decrease.
Normalabnormal is right.
Normalabnormal is right.
04-03-2015, 05:30 AM
#6495
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Joined APC: Feb 2014
Posts: 137
Originally Posted by Turbine
I know compass is now paying for hotel rooms during training, but is training still unpaid? Is several weeks of training home study?
04-03-2015, 06:49 AM
#6496
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Joined APC: Feb 2007
Position: FO
Posts: 3,032
Originally Posted by Da40Pilot
Does anyone know the answer to this question, it's in the gouge - and everyone in the gouges is putting a different correct answer, thanks.
"If you hold a constant Mach during climb-out, what happens to TAS, IAS, and AOA as you approach your level-off altitude?"
All 3 decrease?
"If you hold a constant Mach during climb-out, what happens to TAS, IAS, and AOA as you approach your level-off altitude?"
All 3 decrease?
04-03-2015, 06:50 AM
#6497
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Joined APC: May 2008
Position: CRJ FO
Posts: 405
Originally Posted by alphasierra01
When did they start paying for hotel in indoc in MSP and at the old Pear Tree INN in STL for sims?
When's the award come out?
04-03-2015, 07:49 AM
#6498
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Joined APC: Dec 2011
Posts: 146
Originally Posted by Temocil27
TAS increases with altitude. That's part of the reason we fly so high. Watch the TAS as you climb at .75- it increases
Here's what I saw this morning...
FL225: Mach .70, TAS 431, SAT -22C
FL275: Mach .68, TAS 412, SAT -33C
FL310: Mach .79, TAS 470, SAT -42C
FL350: Mach .79, TAS 462, SAT -49C
FL370: Mach .79, TAS 451, SAT -54C
The speed of sound measured by the Mach meter went from 616kts at FL225 to 571kts at FL370.
In a climb at constant Mach, decreasing TAS, decreasing SAT (until the stratosphere).
04-03-2015, 07:53 AM
#6499
Line Holder
Joined APC: Nov 2012
Posts: 83
At 35,000 ft, 250 KIAS is approximately 430 KTAS. And the speed of sound at 35,000 on a standard day is 574 knots vs. 661 knots at sea level.
IAS and TAS both decrease with altitude with IAS decreasing at a higher rate than TAS. So as you climb AOA will increase to provide the same amount of lift in a constant MACH climb. At least that's what I think...
IAS and TAS both decrease with altitude with IAS decreasing at a higher rate than TAS. So as you climb AOA will increase to provide the same amount of lift in a constant MACH climb. At least that's what I think...
04-03-2015, 07:54 AM
#6500
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Joined APC: Jun 2013
Posts: 806
Originally Posted by NormalAbnormal
You must've flown into an inversion layer.
Here's what I saw this morning...
FL225: Mach .70, TAS 431, SAT -22C
FL275: Mach .68, TAS 412, SAT -33C
FL310: Mach .79, TAS 470, SAT -42C
FL350: Mach .79, TAS 462, SAT -49C
FL370: Mach .79, TAS 451, SAT -54C
The speed of sound measured by the Mach meter went from 616kts at FL225 to 571kts at FL370.
In a climb at constant Mach, decreasing TAS, decreasing SAT (until the stratosphere).
Here's what I saw this morning...
FL225: Mach .70, TAS 431, SAT -22C
FL275: Mach .68, TAS 412, SAT -33C
FL310: Mach .79, TAS 470, SAT -42C
FL350: Mach .79, TAS 462, SAT -49C
FL370: Mach .79, TAS 451, SAT -54C
The speed of sound measured by the Mach meter went from 616kts at FL225 to 571kts at FL370.
In a climb at constant Mach, decreasing TAS, decreasing SAT (until the stratosphere).
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