Typhoon diving speed

[dtango]

Here's a conversion to MPH from HT's chart:

Alt, MPH
0   761.52
500   760.21
1000   758.90
1500   757.58
2000   756.27
2500   754.94
3000   753.62
3500   752.30
4000   750.98
4500   749.65
5000   748.32
5500   746.98
6000   745.64
6500   744.31
7000   742.96
7500   741.62
8000   740.28
8500   738.93
9000   737.58
9500   736.23
10000   734.87
10500   733.51
11000   732.16
11500   730.79
12000   729.43
12500   728.06
13000   726.69
13500   725.32
14000   723.94
14500   722.56
15000   721.18
15500   719.80
16000   718.41
16500   717.02
17000   715.63
17500   714.24
18000   712.84
18500   711.44
19000   710.04
19500   708.63
20000   707.22
20500   705.81
21000   704.40
21500   702.98
22000   701.56
22500   700.15
23000   698.72
23500   697.29
24000   695.86
24500   694.43
25000   692.99
25500   691.55
26000   690.10
26500   688.66
27000   687.21
27500   685.76
28000   684.30
28500   682.85
29000   681.38
29500   679.94
30000   678.45
30500   676.98
31000   675.51
31500   674.03
32000   672.55
32500   671.07
33000   669.58
33500   668.09
34000   666.59
34500   665.10
35000   663.60
35500   662.09
36000   660.59
36500   660.59
37000   660.59
37500   660.59
38000   660.59
38500   660.59
39000   660.59
39500   660.59
40000   660.59
40500   660.59
41000   660.59
41500   660.59
42000   660.59
42500   660.59
43000   660.59
43500   660.59
44000   660.59
44500   660.59
45000   660.59
45500   660.59
46000   660.59
46500   660.59
47000   660.59
47500   660.59
48000   660.59
48500   660.59
49000   660.59
49500   660.59


Tango, XO
412th FS Braunco Mustangs

[Sancho]

Why does the speed of sound not change any more above 36000 feet?  Temperature doesn't change any more above that altitude?

[dtango]

The first layer of atmosphere is the Troposphere from 0 to ~36,000 feet assuming you're mid latitude on earth.  Temperature decreases with altitude in the Troposphere.

The 2nd layer of atmosphere is the Stratosphere from 36,000 feet to around 30 miles up.  Temperature in the stratosphere remains constant from 36,000 ft to 82,000 ft and then begins to increase with altitude.

Here's a nice little URL with a mapping of atmospheric layers and temperature variation with altitude:
 
Temperature Variation with Atmospheric Layer

Tango, XO
412th FS Braunco Mustangs

[Rasker]

Originally posted by J_A_B
Well it had to be less than 12 or you would have died  


J_A_B

does the game actually model pilot death at 12g's or more?

how about Kurt Tank, how many g's does it take to kill him.  And how many perks to draw Kurt Tank as your pilot?

[Rasker]

come to think of it, is there any model aircraft in the game that can actually *take* 12 g's without breaking up?  I dont think even the heavy American iron could explore that part of the flight envelope and survive

[niklas]

Originally posted by -duma-

'The speeds given in the Typhoon's table (of 'limiting indicated airspeeds against height bands') were, after allowing for position error, equivalent to a Mach number of 0.79, which was higher than for any contemporary piston-engined fighter.
The aircraft to be used for the compressibility dive tests was.
 The indicated Mach number (IMN) ...

The problem whether the instruments showed true mach number will allways remain. I seriously doubt that the instruments showed correct mach numbers in ww2. It doesnīt surprise me anymore that according to instruments(!) most RAF fighter seem to be superior at high mach numbers, though they were definitly not the best aerodynamic designs. Itīs just a question of instrument accuracy.

But for flight safety accuracy wasnīt necessary, when the pilot reads an instrument the true airspeed isnīt of interest, only what the needle shows and what test pilots found out as a limit with the same instruments.

It would be really interesting to take those old instrument out of a museum and run tests in modern wind tunnels to check their correctness.

niklas