ASSIGNMENT 2
Textbook Assignment: "Mark 7 Aircraft Recovery Equipment and Emergency Recovery Equipment," Pages 3-1
throught 3-63.
2-1.
The Mk 7 recovery equipment is divided into a
total of how many major systems?
1.
Five
2.
Two
3.
Three
4.
Four
2-2.
What is the purpose of the Mk 7 arresting en-
gine constant runout control (CRO) valve?
1.
To control fluid flow from the engine
cylinder to the accumulator
2.
To
control
the
hydraulic
pressure
maintained in the accumulator
3.
To reduce peak tension on the purchase
cables during arrestment
4.
To allow equal payout of both ends of the
deck pendant
2-3.
The aircraft weight selector is adjusted while
the arresting engine is in the battery position.
This adjustment causes a change in the position
of what component of the CRO valve?
1.
The cam
2.
The plunger
3.
The upper lever
4.
The lower lever
2-4.
Which of the following statements is correct
concerning
the
valve
sleeve
and
stem
movement of the CRO valve?
1.
At a 1:1 ratio, the sleeve and stem move 1/4
in.
2.
At a 1:1 ratio, the sleeve and stem move 1/2
in.
3.
At a 4:1 ratio, the sleeve and stem move 1/2
in.
4.
At a 4:1 ratio, the sleeve and stem move 1/4
in.
2-5.
What controls the variation in the size of the
opening of the CRO valve?
1.
The drive system
2.
The aircraft weight selector setting
3.
The cam rotation
4.
The plunger movement
2-6.
What is the purpose of the four vertical elon-
gated holes machined into the retract valve
seat?
1.
To allow fluid to pass through the valve
from the main engine cylinder
2.
To allow fluid to pass through the valve
from the accumulator
3.
To allow fluid to pass through the valve
from the anchor dampers
4.
To minimize the weight of the valve
2-7.
Which of the following statements best de-
scribes the action of the return spring of the
retract valve retraction lever?
1.
The spring pulls up on the retract lever,
which in turn pulls down on the plunger
and valve stem
2.
The spring pulls up on the retract lever,
which in turn pulls up on the plunger and
valve stem
3.
The spring pulls down on the retract lever,
which in turn pulls down on the plunger
and valve stem
4.
The spring pulls down on the retract lever,
which in turn pulls up on the plunger and
valve stem
2-8.
What device is installed on the retract valve
operating lever to eliminate chatter?
1.
A return spring and tie rod
2.
A plunger
3.
A shock absorber
4.
A 6-inch-square neoprene impact pad
2-9.
The Mk 7 Mod 3 arresting engines have what is
described as a recirculating type hydraulic
system.
1.
True
2.
False
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