The restraint system functions to protect the primate during launch and re-entry environmental stresses, protect the physiological instrumentation from the monkey, and provide comfortable restraint during periods as long as forty days. The restraint system consists of an aluminum frame couch to which is attached to the garment restraint system. Subjects are conditioned to the restraint system while simultaneously learning the behavioral tasks, over a four-month period.

Couch: The primate couch is constructed of lightweight aluminum and features a foot rest and foot separator, an aluminum box to contain four heparin bags, and a back plate to which experiment equipment is mounted. The footrest has a center divider that prevents the animal's feet from crossing over, thus protecting the galvanic skin response leads (dropped from the experiment before flight). The footrest also prevents the animal from exerting a force with his feet directly on the inside surface of the capsule. The forward portion of the suit zips into position on the couch, attaching to a hammock style backrest laced along the full length of the couch rails.

Garment Restraint System (Hammock): The hammock restraint garment for the animal is tightly laced to the couch frame between the side rails. The rails follow the shape of the monkey in a sitting position. The hammock has a foam pad head rest attached to it and an opening for feces elimination. This opening and the lower back and pelvic area are covered with a fabric-covered foam "comfort pad." The "soft" style of the restraint maximizes the comfort factor while still adequately protecting the animal's implants and the spacecraft interior. The restraint also serves to locate the animal over the feces can, which is attached by a flexible duct (to allow vertical movement) to the restraint.

Garment Restraint System (Jacket): The forward portion of the garment is a nylon suit which covers the body from the neck area down, with arms free. Legs are closely held in a forward position, with the feet located by a nonmetallic rest at the end of the couch frame. The jacket is closed in the back with a Velcro fastener strip and has lacings over each shoulder to allow adjustment of the size of the neck opening. The lower border of the jacket extends down over the legs to prevent the monkey from reaching sensors. Full-length zippers on each side of the garment serve to attach it to the hammock and provide a "quick-release" feature for removing the monkey from the couch.

Dimensions: Unknown

Weight: Unknown

Power: None

None

Simulator Assembly: An enclosure built around the couch to provide an enclosed environment for the primate for capsule adaptation, feeding/watering, day/night lighting, psychomotor training, baseline, physiological data, etc. during countdown and for subjects on the ground.