ANSWERS TO QUESTIONS FOR LESSON 3
A1. The constant runout control valve is considered the heart of the arresting en-
gine.
A2. The retract valve permits the return of hydraulic fluid from the accumulator to
the main engine cylinder.
A3. The capacity of the fluid stowage tank is 700 gallons.
A4. The pitch diameter of the sheaves on the outboard shaft of the crosshead is 33
inches.
A5. The drive system transfer energy from an arresting aircraft to the arresting en-
gine.
A6. The sheave damper reduces peak cable tension.
A7. The differences between the pendant engine and the barricade engine are:
1.
No fluid coolers are installed.
2.
Barricade engines are endless reeved.
3.
No anchor dampers are installed.
4.
A short stroke control valve cam is used.
A8. Multiple release straps connects the upper and lower loads straps to the bar-
ricade stanchions.
A9. The counterbalancing springs are compressed when the stanchions are low-
ered.
A10. The deck latch secures the barricade stanchions to the deck.
A11. The power package accumulator operating pressure is 1500 psi.
A12. Off, Automatic, and Run are the three position of the motor controller switch.
A13. One inch is the minimum allowable clearance between the crosshead and the
crosshead stop.
A14. The age of all packing are based on the cure date.
A15. The shelf life of V-ring packing is three years.
A16. The open side of the packing face the pressure.
A17. Hookrunner should approach the aircraft from the front and side.
A18. Air in the main engine cylinder or the CRO valve not properly seated.
A19. The barricade stanchions safety brace must be installed.
A20. When the weight selector is set to light for the incoming aircraft two-blocking
can occur.
A21. Fast retraction is an indication of excessive accumulator pressure.
ANSWERS TO QUESTIONS FOR LESSON 4
A1. The launching engine cylinders are heated by a pair of trough heaters located
below each row of launching engine cylinders.
A2. The trough steam smothering is actuated pneumatically by a valve located at
deckedge or manually by a bypass located near the pneumatically operated
steam supply valve.
AIII-5
