TM 1-1520-238-T-4
Change 9
5–11
5–7.
SYSTEM DESCRIPTON (cont)
5–7
d. The tail rotor blades are designed to prevent catastrophic failure in the event of certain kinds of battle
damage and cracks and are also equipped with de–ice heaters.
e. The directional control pedals, located on the floor of the pilot and CPG stations, control the tail rotor
system. The pilot and CPG cyclic and collective sticks work together to control the main rotor system.
f. The ENG–RTR RPM% indicator provides the aircrew with a visual reference of the main rotor speed (NR)
in %. The HIGH and LOW RPM ROTOR indicators on the pilot and CPG master caution/warning panels provide
visual warning of main rotor speed.
M58-272
MAIN
ROTOR
HEAD
ASSEMBLY
ACCESSORY
GEAR
TRAIN
MAIN
TRANS-
MISSION
ENGINE
NOSE
GEARBOX
(NGB 2)
TAIL ROTOR
HEAD ASSEMBLY
INTERMEDIATE
GEARBOX (IGB)
TAIL
ROTOR
GEARBOX (TGB)
MAIN ROTOR
DRIVE SHAFT
DRIVE
SHAFT 3
INPUT DRIVE SHAFT 1
DRIVE
SHAFT 4
DRIVE SHAFT 5
DRIVE SHAFT 6
APU
APU DRIVE SHAFT 7
INPUT DRIVE SHAFT 2
ENGINE 2
ENGINE 1
ANTI-FLAIL
(TYP)
ENGINE
NOSE
GEARBOX
(NGB 1)
Figure 5–8.
Rotor System Block Diagram
