FM 55-450-2 PDF

Army Helicopter Internal Load Operations (FM ) [Department of the Army ] on *FREE* shipping on qualifying offers. Field Manual provide extensive information about FM ( ). FM PREFACE. This manual will assist personnel who perform helicopter internal load missions. It will familiarize them with.

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Based on calculations, a degree angle of attachment in the intended restraint direction causes a restraint loss of only 25 percent in that direction.

Install prefabricated spacers between the pallets. The greatest rotor wash velocity occurs between 20 to 60 feet outside the rotor disc. Height wheels up feet 55-50-2 inches. Determine the amount of forward and lateral restraint.

Tie-down devices secure cargo against forward, rearward, lateral, and vertical movement during takeoff, flight, and landing. The net must be right-side up so the bottom hooTcs will be pointing inward after the nets have been attached to the pallet. This manual does not provide details on aviation operations, nor does it present detailed information that would normally be in unit standing operat- ing procedures SOPs or other publications that specifically address the subject.

The unit SOP should contain loading plans to assist the ground crew and prevent confusion at a time when speed and control are needed. Fk flight, a helicopter generates and stores a charge of static electricity. In accordance with Rule 5 J paragraphcheck the load to see if any additional tie-down devices are required to prevent the load from shift- ing.

Tie-down fittings on the side fk the beams are good for 1, pounds maximum per fitting perpendicular to the beams. It also protects the cargo floor from damage that might be caused by tracked vehicles, steel wheel rims, pack- ing case bands or studs, and rollers. This paragraph covers a possible vehicle load that is air transportable in the aircraft.


FM Army Helicopter Internal Load Operations – Chptr 1 Internal Cargo-Carrying Helicopters

The pod can be loaded on the ground and then raised up to the helicopter. The cargo compartment dimensions are about 72 inches wide, inches high, and inches long Figures and 55–450-2 following procedures apply for storing pallets that have been designated as war readiness material WRM: The presence of bends, cracks, or distortion will oe cause for replacement.

In many cases where several items are tied down together, it 555-450-2 be necessary to add more tie-down devices to completely secure the load.

The unit loading team aids in guiding the items fn adjusting shormg. If the actual restraint is less, add more tie-down devices and continue the procedure until sufficient restraint is obtained. The skin-to-rail bond is an important portion of the pallet’s strength.

CAUTION The 10,pound capacity tie-down fittings must be screwed into the threaded receptacles to full depth to achieve their rated capacity. The majority of vehicles transported, for example, those with pneumatic tires, do not exceed unit floor and ramp load maximums and thus do not require shoring.

For ease of handling, length should not exceed 12 feet. However, the usable dimensions of the upper surface are inches wide by 84 inches long.

There are several ways of finding the weight of an item. The tension collar permits final tensioning of the chain.

Com- posite loads will almost always require additional tie-down devices in the lateral direction. This procedure is particularly important when tying down tall items and composite cargo loads consisting of several stacked boxes. Compute restraint criteria for each aircraft to counter the maximum amount of force or thrust that cargo can mf expected to exert against tie-downs under operating conditions.


Army Helicopter Internal Load Operations (FM 55-450-2)

If both are loaded, the cargo must be forward of the person- nel for safety. After applying the tie-down devices required for minimum restraint, check the load to determine if additional tie-down devices are FM required to prevent the load from shifting. To correctly plan an airlift and segregate loads for individual aircraft, weights and CB of cargo units must be determined.

The four in the ramp are in a rectangular pattern. There areJhreejQeis to a set: This publication gives the dimensions and weight of almost every item the military has. The L-snaped grabhook is part of the MB-1 tie-down chain and not a stand-alone item.

For specific procedures, refer to TM When possible, transport the boards and blocking material with the fk, since the ramp- toe extension will also be needed during the unload- ing of the helicopter. When tie-dow n devices are passed over cargo from side to side [Figure Detail C]the gm device should be as close to yu degrees as the floor fittings will permit.

The two types of cargo helicopters are the Chinook and the Tarhe. The cargo restraint net rings on the walls and ceiling have a rated capacity of fk, pounds Figure Mark hidden obstructions or warn the supporting aviation unit of their presence.

Do not tighten these straps until the side nets are hooked to the top net. CAUTION Forklift operators must ensure cargo load is properly secured to the pallet using nets, straps, or chains before moving the pallet. The points to use as the axles should be support braces between the skids, as shown here.