TM 55-1510-220-10
RNO
Pressure Altitude................................. 4732 feet
FAT............................................................ 32°C
ISA Condition ................................... ISA + 27°C
Enter the TIME, FUEL, AND DISTANCE TO CLIMB
Graph at 280C to 5433 feet, and to 12,000 pounds, and
enter at -100C to 26,000 feet, and to 12,000 pounds,
and read:
Time to Climb = 33.6 - 3.2 = 30.3 = 30 minutes
Fuel Used to Climb = 404 - 60 = 344 pounds
Distance Traveled = 94 - 8 = 86 nautical miles
Enter the TIME, FUEL, AND DISTANCE TO
DESCEND Graph at 26,000 feet, and enter again at
4732 feet, and read:
Time to Descend = 17.5 - 13.1 = 14.4 = 14 minutes
Fuel Used to Descend = 160 - 38 = 122 pounds
Distance Traveled = 79 - 13 = 66 nautical miles
An estimated average cruise weight of 11,200
pounds was used for this example.
Enter the tables for MAXIMUM ENDURANCE
POWER @ 1700 RPM for ISA + 10°C, ISA + 20°C, and
ISA + 30°C, and read the cruise speeds for 26,000 feet
at 12,000 pounds and 11,000 pounds:
CRUISE TRUE AIRSPEEDS AT FL 260
11,000 POUNDS
ISA + 10°C
ISA + 20°C
ISA + 30°C
208
212
210
12,000 POUNDS
ISA + 10°C
ISA + 20°C
ISA + 30°C
208
212
196
Interpolate between these speeds for ISA + 270C and ISA + 17°C at 11,200 pounds:
Cruise True Airspeed (ISA + 27°C)......209 knots
Cruise True Airspeed (ISA + 17°C)......211 knots
Enter the *MAXIMUM ENDURANCE POWER @ 1700
RPM Tables for ISA + 10°C, ISA + 20°C, and ISA +
30°C at 12,000 pounds and 11,000 pounds and
interpolate the recommended torque settings for ISA +
27°C and ISA + 17°C, then add 2 percentage units.
ISA + 27°C ......................52% torque per engine
ISA + 17°C ......................51% torque per engine
Enter the *MAXIMUM ENDURANCE POWER @ 1700
RPM Tables for ISA + 10°C, ISA + 20°C, and 7-4 ISA +
30°C at 12,000 pounds and 11,000 pounds at 26,000
feet, and interpolate the fuel flows for ISA + 27°C and
ISA + 17°C at 11,200 pounds, then add 10 pounds per
hour per engine.
ISA + 27°C
Fuel Flow Per Engine ........................ 238 Lbs/hr
Total Fuel Flow ................................. 476 Lbs/hr
ISA + 17°C
Fuel Flow Per Engine ........................ 240 Lbs/hr
Total Fuel Flow ................................. 480 Lbs/hr
7-4
