A-A-52166B
operating and storage environments. Dissimilar metals shall not be used in intimate contact with each other unless protected against galvanic or electrolytic action.
3.2 Design and construction. Vehicle shall be procurable as an "off-the-shelf", commercially
produced, readily available item as specified herein.
3.2.1 Airdrop capability. When specified (see 7.2), the vehicle shall be capable of being airdropped using standard military pallet systems (see 7.3). The front ski(s) shall be easily removable to reduce the vehicle length. The vehicle shall be capable of resisting vertical decelerations of approximately 18.5 times the vehicle weight.
3.2.2 Payload capacity. The total vehicle payload shall be not less than that shown in table I. The payload shall include the operator and, when applicable, a passenger (weight computed at
200 pounds (lbs) each).
3.2.3 Towed sled weight. The towed sled weight shall be the weight towed by the snowmobile and shall include the weight of the sled and its payload. The snowmobile shall be capable of towing a towed sled weight of not less than that specified in table I and shall be capable of towing the towed sled weight in snow conditions specified in table III.
3.2.4 Ratings. Vehicle ratings shall be the manufacturer's published ratings and shall be not less
than those specified in table I.
TABLE I. Snowmobile weights, loads, and ratings.
Ground pressure
(psi)
0.404
0.445
0.405
0.390
3.2.5 General configuration. Types I, II and III snowmobiles shall be equipped with a single track drive system and dual steering skis. Type IV snowmobile shall be equipped with a twin drive system, with single or dual steering skis and a cargo area located to the rear and parallel to the seat.
3.2.6 Seating configuration. The seat shall be of the open saddle type with friction-surfaced foot rests along the sides. The seat shall be well-padded to withstand the vertical accelerations expected, in accordance with SAE J89. For type IV, a backrest shall be adjustable to accommodate the operator and equipment. For types I and III, and when specified for types II and IV (see 7.2), the seat shall have provision for a passenger and shall include a passenger handgrip behind the operator. The handgrip shall be in accordance with SAE J1062. Metallic passenger handgrips shall have hand warmers built in.
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