Factors Affecting Climb Performance

INTERMEDIATE FLIGHT PREPARATION WORKBOOK

APPENDIX H

The range scheduled climb speed for the 2-engine range climb is 250 KIAS below 28,000 feet,

and IMN = 0.64 at altitudes above 28,000 feet.

For 1-engine operation, the climb speed is 170 KIAS at all altitudes.

Climb Thrust

Climb performance charts are based on MCT setting for both 1 and 2-engine operation.

Performance Ceilings

Performance ceilings are presented for service ceiling, cruise ceiling, and combat ceiling. These

ceilings correspond to rates of climb of 100, 300, and 500 FPM, respectively.

Range Climb

The range climb speed schedule will result in a somewhat longer time and a greater fuel usage

than the rate climb. The range climb schedule may be used when minimum climb fuel and time

are not required, but a longer climb range is desired.

Rate Climb

The scheduled airspeed for the rate climb is the speed for best rate of climb. A climb scheduled

at this speed will result in the least time for the climb segment to the final altitude.

H103. FACTORS AFFECTING CLIMB PERFORMANCE

Temperature

Variations in OAT from the ICAO standard day International Standard Atmosphere (ISA) have

significant affects on time, fuel, distance in climb, and performance ceilings. Temperature

corrections are provided on each performance chart.

Airspeed

The scheduled climb airspeeds are close approximations to the best rate of climb speeds for 1 and

2-engine operation. The results shown in the climb charts can be achieved only if the scheduled

speeds are maintained within +5 knots or +0.01 M.

Operation of Anti-Ice Systems

The operation of anti-ice systems during climb will result in decreased climb performance and

lower performance ceilings.

T-1A PERFORMANCE MANUAL EXTRACTS

H-5