All Armourer's Workshop and MCHeli content packs available for downloads are here:
For Armourer's Workshop
Released so far:
Astronaut pack - version 3.0: Contains astronaut suit and accessories. Update: added full body suit, so you no longer need to install Aeon Extension Patch to get the full body suit. And general cleanup/fix in the parts.
Includes a decorative helmet (that emits light) so you can place it on a shelf as a trophy. It's planned to add some dyeable parts.
Diving pack - version 2.0: Scuba diving suit and accessories. Update: Added full diving suit which can be used with other sets (example, motorcycle suit) and can be dyeable, added diving tank with life jacket, weight belt, and a diving mask. Renamed Life Jacket to Diving Life Jacket. It's planned to add some dyeable parts.
Bike and HazMat pack - 1st release: a misc pack with motorcycle helmet and boots, and 3 types of gas masks. All dyeable. Includes a decorative motorcycle helmet that you can place like a block.
Mekanism pack - 1st release: This pack was recreated for Mekanism players with incompatibilities with Smart Moving. You can apply these skins to fix the Smart Moving bug. Currently: gas mask, free runners and glowstone armor set.
Includes a decorative gas mask helmet that you can place like a block.
For MCHeli mod
Released so far:
Manned Maneuvering Unit (MMU or NASA jetpack) - version 1.1: It is a jetpack with very small thrust for slow movements in space. Made to be used in a Galacticraft space station but it's possible to use it in the Overworld and planets with gravity.
Motorcycle - alpha release: The motorcycle is pretty still work-in-progress. I've got the basic model without the texture, it's possible to ride it alone or with a NPC or another player.
Satellite - version 1.0: A decorative element with zero gravity. It does nothing but has a 9-slot inventory. Just "install" the satellite mid-air, or in a Galacticraft space station dimension. You can sit on and steer satellite to point the antenna.
That's all. Also: twitter post and Google+ post.