Mission equipment restraint system
A method and apparatus for securing a container, in particular a Commercial-Off-The-Shelf (COTS) container to an aircraft consists of four tiedown adapters. The tiedown adapters are attached one each to a corner of the COTS container, typically at about the vertical midpoint of the edge. The tiedown adapters each comprises a base and a swivel. The base abuts the COTS container and has an integral cable fairlead. A cable is threaded through the fairleads so it wraps horizontally around the COTS container. The ends of the cable are then attached to each other using a turnbuckle, which is adjusted to put a predetermined tension in the cable. A shackle is attached to the swivel of each of the tiedown adapters and attached to an Adjustable Strap Assembly (ASA) or similar tiedown, which is attached to one of the load rings in the aircraft.
1. A container adapted to be secured to an aircraft, the aircraft having an airframe with a plurality of load rings attached thereto, the container comprising:
a floor and a plurality of walls joined together at a plurality of corners;
a plurality of tiedown adapters, each of said plurality of tiedown adapters extending outward from an outside surface of one of said plurality of corners, each of said tiedown adapters comprising a base unit and a load ring, the base unit having a cable fairlead formed therein; and
a tension member having a first end and a second end, the tension member passing substantially horizontally through the fairleads in the base of each of said plurality of tiedown adapters, the first end being attached to the second end and tensioned to a predetermined tension to provide a compressive load on the walls of the container.
2. The container of claim 1 , further comprising:
a plurality of inner load spreaders, each of said inner load spreaders comprising an elongate plate with an aperture formed therein, the inner load spreaders each having a front surface matching an inner surface of a corner of the container.
3. The container of claim 2 further comprising:
a plurality of outer load spreaders, each of said outer load spreaders comprising an elongate plate with an aperture formed therein, the outer load spreaders each having a rear surface matching an outer surface of a corner of the container.
4. The container of claim 1 , wherein:
the container comprises a Commercial Off The Shelf container.
5. The container of claim 1 , wherein:
the tiedown adapter further comprises a swivel operatively attached to the base unit, wherein a load ring is attached to the tiedown adapter through the swivel.
6. The container of claim 1 , wherein:
the fairleads comprise a channel formed in a lower surface of the base unit.