TM 55-2840-254-23
1-107
1-107 TEST ENGINE (AVIM) (Continued)
i. Calculate maximum actual Wf permitted at maximum power. Required actual Wf is determined by
using graph below at existing ambient (compressor inlet) temperatures.
To determine maximum actual Wf permitted, multiply compensated Wf (determined in step h.) by
compensating factor given below.
NOTE
Compensating factors vary with barometric pressure.
Actual AHP = Compensated SHP x
Actual Wf = Compensated Wf x
Corrected
Compensating
Corrected
Compensating
Barometer
Factor
Factor
Barometer
28.50
0.9525
29.90
0.9993
28.60
0.9559
29.92
1.000
28.70
0.9592
30.00
1.003
28.80
0.9626
1.006
30.10
28.90
0.9659
30.20
1.009
29.00
0.9693
1.013
30.30
29.10
0.9726
30.40
1.016
29.20
0.9759
30.50
1.019
29.30
0.9793
30.60
1.023
29.40
0.9826
30.70
1.026
29.50
0.9860
1.029
30.80
29.60
0.9893
1.033
30.90
29.70
0.9926
1.036
31.00
29.80
0.9960
Record actual Wf and ensure that it does not exceed maximum actual Wf permitted.
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