To determine the propeller tip's rotational speed in normal operation, we can use the following formula:
Propeller Tip Speed (in meters per second) = (Propeller Diameter * Propeller RPM) * π / 60
Propeller Tip Speed = (2.67 * 1700) * π / 60 = 250.23 m/s
Therefore, the propeller tip's rotational speed in normal operation is approximately 250.23 m/s.
To determine the thrust generated by the propeller, we can use the following formula:
Thrust = (Engine Power * Propulsive Efficiency) / Propeller Tip Speed
Thrust = (1200 * 0.6) / 250.23 = 2.876 kN
Therefore, the thrust generated by the propeller is approximately 2.876 kN.
From the manufacturer the following data can be obtained:
Engine Power = 1200 hp
Propeller Diameter=2.67m
Propeller RPM=1700
Cruise: 2700 kts@20000ft
Propulsive Effiency=60%
Determine the propeller tip's rotational speed (in metres per second) in normal operation ?
Determine the thrust generated by the propeller (in kN) ?
1 answer