TM-9-2815-205-24
6V53/6V53T ENGINES, DIESEL WITH CONTAINERS; MODEL 5063-5299, MODEL 5063-5392, MODEL 5063-5393 AND MODEL 5063-539L
TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE
FEBRUARY 2013
TM-9-2815-205-24 - Page 788 of 856
Horsepower Correction and Acceptance
1.
See Table 3 for listing of required terms.
Table 3.
List of Required Terms.
Symbol
Name
Units
BAROo
Observed Barometric Pressure
inches Hg
BAROd
Dry Barometric Pressure
inches Hg
T
Engine Air Intake Temperature
°F
Tdb
Dry Bulb Temperature
°F
Twb
Wet Bulb Temperature
°F
VP
Water Vapor Pressure
inches Hg
CFa
Air Correction Factor
HP
CFsg
Fuel Specific Gravity Correction
Factor
HP
CFft
Fuel Temperature Correction Factor HP
BHPo
Brake Horsepower Observed
HP
BHPc
Brake Horsepower Corrected
HP
2.
Dry Barometric Pressure
a.
Record observed local barometric pressure (BAROo).
b.
Measure wet-bulb and dry-bulb temperatures (Twb and Tdb).
c.
See Table 4 for water vapor pressure (VP) at observed wet-bulb and dry-bulb temperatures.
Table 4.
Water Vapor Pressure (VP) in Inches HG from Wet Bulb and Dry Bulb Temperatures.
Wet Bulb
Temperature
Dry Bulb
Temperature
50°F
55°F
60°F
65°F
70°F
75°F
80°F
85°F
90°F
55°F
0.31
0.43
60°F
0.25
0.38
0.52
65°F
0.27
0.33
0.47
0.62
70°F
0.15
0.27
0.41
0.57
0.74
75°F
0.09
0.22
0.36
0.51
0.68
0.87
TM 9-2815-205-24
0101
0101-16
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