sstoladc.jpg

Photo credit Eric Watanabe : Launch Vehicle : The Lockheed 
Advanced Development Company [ed. "The Skunk Works"] designed 
Aero-Ballistic Rocket (ABR) is a completely reusable Single-
Stage-to-Orbit launch vehicle capable of lifting 40,000 
pounds of payload into low earth orbit, or 25,000 pounds to 
Space Station Freedom.  The ABR combines a liquid hydrogen / 
liquid oxygen Linear Aerospike rocket with a lifting body 
shape, allowing the vehicle to take off vertically and land 
horizontally like the space shuttle.