The A-frame is of steel construction and when deployed it, stabilizes the rear of the launch
vehicle. The A-frame provides a level home bank platform for the launch frame, launch beam and
parallel modules. It comprises upper and lower transverse beams, stabilizer legs, hydraulic
cylinders and control valves.
Upper A-Frame Transverse Beam
The upper A-frame transverse beam spans the rear of the vehicle and consists of a
central beam connected to the launch frame. The upper A-frame central beam
incorporates a pivot to which the launch frame attaches.
The launch frame is moved vertically on the A-frame legs by the operation of
hydraulic cylinders. The transverse beam is pinned in its upper position for
deployment of the parallel modules.