C17 LIQ Loadmaster Closed Book Math and Graph Problems

For planning purposes, how many 25,000 pound chains are needed for forward restraint on a vehicle which weighs 53,500 pounds?

10

For planning purposes, how many 10,000 pound chains are needed for aft restraint on a vehicle which weighs 53,500 pounds?

12

An articulating track vehicle is going to be loaded in compartment D. The following information is know about the vehicle: Vehicle weight = 24,500 lbs Number of wheels = 10 Pad area = 18 square inches Track length = 9.5 feet Track width = 18 inches What is the pounds per inch of track width (PIW)?

137 PIW

An articulating track vehicle is going to be loaded in compartment D. The following information is know about the vehicle: Vehicle weight = 24,500 lbs Number of wheels = 10 Pad area = 18 square inches Track length = 9.5 feet Track width = 18 inches Using the information on the right, compute the pounds per square inch (PSI) of the pad area.

137 PSI

What is the PSI (pounds per square inch) of the skid-mounted box? (GRAPHIC: pallet w skids V5.jpg.)

14

What is the maximum allowable in-flight ramp loadable height of a vehicle when its highest point is positioned at FS 1260?

140 inches

When are spotters required as far as height, when loading cargo forward of FS 937?

148 inches

The center of gravity for this vehicle is _____ inches front he front axle. (GRAPHIC: M1087a1-1.jpg)

155

If a truck has a ground clearance of 15 inches and a rear overhang of 100 inches, how far forward from FS 1165 must the rear wheels be moved so that the ramp can be safely closed?

16 inches to FS 1149

After installing two symmetrical 25,000 pound tiedowns on a unit of cargo, you measure and record the following: Chain length 75 inches Longitudinal length 60 inches Lateral length 20 inches Vertical Length 24 inches How much vertical restraint is provided?

16,000 pounds

Which switch engages the retractable vertical restraint lips at pallet position right? (Graphic: LM FWD CONTR_V2.swf)

2

What is the pounds per inch of width (PIW) for a non-articulating track vehicle that weighs 72,000 pounds and has a 16 inch wide track?

2,250 PIW

An articulating track vehicle is going to be loaded in compartment D. The following information is know about the vehicle: Vehicle weight = 24,500 lbs Number of wheels = 10 Pad area = 18 square inches Track length = 9.5 feet Track width = 18 inches Given the information on the right, compute the wheel weight.

2,450 lbs

An articulating track vehicle is going to be loaded in compartment D. The following information is know about the vehicle: Vehicle weight = 24,500 lbs Number of wheels = 10 Pad area = 18 square inches Track length = 9.5 feet Track width = 18 inches Given the information on the right, compute the pounds per linear foot (PLF).

2,579 PLF

After installing two symmetrical 25,000 pound tiedowns on a unit of cargo, you measure and record the following: Chain length 75" Longitudinal length 60" Lateral length 20" Vertical length 24" How much longitudinal restraint per chain is provided

20,000 pounds

Consider two axles parked side-by-side in cargo compartment E. If axle A weighs 19,000 pounds, the maximum weight of axle B is __________ pounds. (GRAPHIC: max axle limit comp e.jpg.)

20,500

The cargo compartment has a constant loadable width of _______ inches at approximately 2 inches above the floor.

216

In compartment E, how much can each of these axles weigh? (GRAPHIC: short vert ramp.jpg. w/ Humvee_top.tif)

22,000 lbs

Using the load shift formula, compute the following: An aircraft has a total cargo load of 80,000 pounds. What is the CG change in inches if 20,000 lbs are moved from station 500 to station 600?

25 inches

Consider two axles parked side-by-side in cargo compartment E. What is the maximum an axle can weigh on the right side of the aircraft if a 9,000 pound axle is parked on the left side? (GRAPHIC: max axle limit comp e.jpg.)

25,000 lbs

These two axles are within 8 inches of the aircraft centerline. What is the maximum each of these axles can weigh in compartment D? (GRAPHIC: short vert ramp.jpg. w/ Humvee_top.tif)

27,000 lbs

How much approach shoring is required when a vehicle has a rear overhang of 100 inches and a ground clearance of 25 inches?

3 inches high x 25 inches long

What is MAC on the C-17 aircraft?

309.5

Compartment E has a maximum single axle floor limitation of __________ pounds.

36,000

If an aircraft has a zero fuel weight of 326,220 pounds and a zero fuel moment of 29,539, what is the zero fuel % MAC?

36.2

What is the rear axle weight of a vehicle that weighs 6,200 lbs, the center gravity from the front axle is 85 inches and the wheelbase is 110 inches?

4,791

What is the Ramp Toe Contact ration of a vehicle if it has an overhang of 90 inches and ground clearance of 19 inches?

4.8

Using the load shift formula, compute the following: With a total cargo weight of 90,000 pounds, how much weight must be moved from FS 800 to FS 720 to move the load CG 40 inches?

45,000 pounds

After installing four 25,000 pound chains (2 fwd, 2 aft) on a vehicle, you measure and record the following: Chain length 75" Longitudinal length 60" Lateral length 20" Vertical length 24" How much lateral restraint per chain is provided?

6,665 pounds

Suppose a concentrated load weighs 5,760 pounds and is supported on 4 skids, each 4 inches wide by 10 inches long. The skids are more than 12 inches apart. According to Figure 4D-12, Concentrated Floor Loads - Calculations Sheet 1, what is the maximum PIW for this load?

624

Suppose you are loading a vehicle with a 235 inch wheelbase, an overhang of 90 inches, and a ground clearance of 20 inches. Considering ground contact, what is the maximum ramp hinge height for the item to be safely loaded without shoring?

70 inches

Determine the maximum cargo floor height for a vehicle loaded outboard of X = +/- 82, with a projection of 100 inches, a 350-inche wheelbase, and a height of 140 inches.

74 inches

What is LEMAC on the C-17 aircraft?

793.6

For planning purposes, how many 25,000 pound chains are required for forward restraint for a vehicle which weighs 45,000 pounds?

8

A trailer has a forward support weight of 500 pounds and a rear axle weight of 2200 pounds, the wheelbase is 100 inches. What is the CG?

81 inches

If the total weight of a load is 96,221 pounds and the total load moment is 7,957, what is the load's CG station?

827

The center of gravity for this vehicle is _____ inches from the front axle. (GRAPHIC: hummvee.jpg.)

98

Which switch will engage the retractable vertical restraint lip on the right ADS restraint rail located on the cargo compartment floor? (GRAPHIC: ADS LOCKS_10JAN03_TOP-R2.swf)

A

Which switch will lock the right variable restraint locks 1 and 2? (GRAPHIC: ADS LOCKS_10JAN03_TOP-R2.swf)

A

Which switch will release left locks 21-22? (GRAPHIC: ADS_LOCKS_RT_V1.swf)

A

What type of hazardous material would have this displayed label? ((GRAPHIC: Oxidizer_small.jpg.)

A material that may cause or enhance the combustion of other materials by yielding oxygen

Which switch will RELEASE the retractable vertical restraint lip on the left ADS restraint rail located on the cargo compartment floor? (GRAPHIC: ADS LOCKS_10JAN03_TOP-R2.swf)

C

A 28,000 pound load on dry shoring can be winched up a 3.8-degree incline with a double-line cable configuration. True or False

False

Can a non-articulated (rigid) suspension vehicle be loaded across Area B if it weighs 62,000 pounds and has an 18 inch wide track?

No

Using table 4E-1 in TO 1C-17A-9, compute the cable configuration needed to load a 32,300 pound load on skids on a non-skid surface up a 3.8-degree ramp angle.

Quadruple-line

Using table 4E-1 in TO 1C-17A-9, compute the cable configuration needed to load a 56,000 pound vehicle rolling on tracks up a 15-degree ramp angle.

Triple-line

The following vehicle is considered to have pneumatic tires. (GRAPHIC: axle cl.jpg labeled as such: Each tire pressure is 110 psi.) The pad width equals 6 inches The pad length equals 7 inches True or False

True

With a zero fuel weight of 400,000 pounds and zero fuel % MAC of 39.0 an aircraft is within the zero fuel envelope limitations. True or False

True

An articulating track vehicle is going to be loaded in compartment D. The following information is know about the vehicle: Vehicle weight = 24,500 lbs Number of wheels = 10 Pad area = 18 square inches Track length = 9.5 feet Track width = 18 inches Can this vehicle be loaded in compartment D?

Yes

An item of cargo weighing 68,000 pounds with hard rubber wheels would require a __________-line configuration in order to be winched up a 15-degree angle.

quadruple