Apollo Spacesuit Model A6L. A two piece garment with the jacket assembly having a large zippered front, velcro attachments, and a label that reads: "ITEM Spec. CP 1003, Jacket Assy, TMG, A6L-204050-01, MODEL NO. 1003 A, SIZE Large Regular, SERIAL 008, DATE 3/67, CONTRACT NO. NAS 9-6100, International Latex Corporation". And a trousers assembly with a large velcro covered zipper on each leg. An identical label with these changes reads: "ITEM Trousers Assy. TMG, A6L-205050-01, SERIAL 009, DATE 2/67".
The Apollo A6L spacesuit was intended to be used for crew training and flight use. It was the culmination of 6 years of development work on perfecting an Extra-Vehicular Activity (EVA) spacesuit capable of being used in the harsh lunar environment where temperatures range from minus 250 in the shade to over 200 degrees F in the sun. In addition the spacesuit had to protect the astronaut from the dangers of high-speed micrometeoroids which could puncture the spacesuit. The Apollo A6L spacesuit developed by the International Latex Corp. (ILC) consisted of major two components, the Pressure Garment Assembly (PGA) and a Thermal Micrometeoroid Garment (TMG), a protective EVA coverlayer.
The A6L TMG consists of the following layers (arranged from the outside to the inside), an outer layer of high temperature resistant nylon (HT-1) as a protective layer, two alternating layers of perforated aluminized mylar and marquisette spacer, five layers of perforated aluminized mylar separated by layers of unwoven dacron for thermal protection, followed by one layer of neoprene coated nylon ripstop for micrometeroid impact shock absorption.
The Apollo A6L spacesuit was the final suit configuration destined for use on the lunar surface until the tragic Apollo 1 fire in January 1967. Recommendations by the Apollo 204 Review Board resulted in changes to the spacesuit. Modifications to the TMG changed its outer surface to fire resistant Teflon and Beta glass cloth and incorporated the TMG as a non-removable one-piece covering of the spacesuit PGA. Following the spacesuit redesign, A6L spacesuits were only used for crew training.
The A6L TMG consists of a separate pair of trousers and a jacket, which the astronaut was to don prior to going out onto the lunar surface. The trousers were designed to be put on by a fully suited astronaut and thus feature a zippered opening extending down the entire length of the left leg, with a partial zippered opening down the right leg. The zippers have lanyards, which enable an astronaut wearing bulky gloves to pull them closed. In addition there are Velcro tabs to secure the zipper lanyards. Velcro patches and metal rings are attached at the top of the trousers, for attaching the jacket.
The upper part of the A6L TMG consists of a one-piece jacket with a zippered opening down the front. A flap covers the zipper as well as the central chest area of the jacket. Under the flap, cutouts in the Jacket provide access to the spacesuit umbilical hose connections. There is a small rectangular opening in the center of the flap for the spacesuit torso length adjustment strap. A small pouch is attached to the upper right arm for placement of a radiation dosimeter. Large Velcro areas around both sides of the neck collar provide attachment areas for the Extra-Vehicular Visor Assembly which was worn over the pressure helmet. [With:] Photos of the A6L used during training. (2)