NOTES ON THE ALLISON V-1710-C15 ENGINE
(Using 100 Octane Fuel)
27. The following should be carefully noted:
(i) Limited operational conditions
Take-off * Maximum r.p.m. 3000
Maximum boost at S.L. 41.0 in.Hg.
Maximum boost above 2600 ft. 38.9 in.Hg.
Mixture control below 3500 ft. "Full-rich"
Mixture control above 3500 ft. "Auto-rich"
Climb* Maximum r.p.m. 2600
Maximum boost 35.0 in.Hg.
* Note: - For take-off and climbs of short duration (not exceeding 5 min.)
from sea level, the throttle should be adjusted to give 41 in.Hg. and left
in this position until the boost falls to 38.9 in.Hg. This boost should
then be maintained by adjustment of the throttle. For climbs of longer
duration the boost should be adjusted to 35 in.Hg.
Maximum cruising
(mixture control
"Auto-rich") Maximum r.p.m.
Maximum boost 2600
35 in.Hg.
Maximum cruising
(mixture control
"Auto-rich" or
weakened.) Maximum r.p.m.
Maximum boost 2280
29.2. in.Hg.
Maximum level
(5 minute limit) Maximum r.p.m.
Maximum boost 3000
38.9 in.Hg.
Maximum dive Maximum r.p.m.
Maximum boost 3120
38.9 in.Hg.
(ii) Oil Pressure
Normal 60-65 lb./sq.in
Minimum 50 lb./sq.in
(iii) Oil inlet temperatures
Minimum for take-off 40°C
Normal 70-80°C
Maximum 85°C
(iv) Coolant temperature
Maximum 125°C
Minimum for take-off or flight 85°C
FUEL CAPACITY AND CONSUMPTIONS
28. Note the following:
(i) Fuel capacity (in Imperial gallons)
Main tank 50 gallons [62.5 gal U.S]
Fuselage tank 47 gallons [58.75 U.S.]
Summary of Contents for P-40 Tomahawk
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