Hyd System

Question 1

First stage pump

Answer 1

Driven by MGB
3000 psi
Provides psi to 1 stage main rotor servos loc lower half, 1 stage tail rotor servos loc outboard side

Question 2

2nd stage pump

Answer 2

Driven by AGB
3000 psi Provides psi
Provides psi to 2 stage main rotor servo loc upper half, AFCS servo 1 loc lower half at 1000 psi

Question 3

Utility pumps

Answer 3

Driven by AGB
3000 psi
Provides psi to 2 stage tail rotor servos loc inboard side at 1000 psi
Wheel brakes @ 1500 psi, landing gear, APP starter, utility hoist, cargo ramp/door, cargo winch, rotor positioning, blade fold, engine start(300 psi)

Question 4

Engine start pump

Answer 4

Driven by AGB
0-400 hyd systems
Provides psi to engine starters

Question 5

Rotor brake

Answer 5

Self contained
Hyd operated, electronic controlled
Disc brake systems

Question 6

Manual in flight refill system

Answer 6

Provides hyd system refueling
Reservoir, hand pump, four-way selector valve
Replenishes 1&2 stage utility pump