While all of this was going on, others were suggesting a completely different approach to the future. They stated that NASA was better off using the existing Saturn to launch their space station, supplied and manned using modified Gemini capsules on top of the Air Force's newer Titan II-M. The cost of development for this looked to be considerably less than the shuttle alone, and would have a large space station in orbit earlier.
Space Shuttle Enterprise
Space Shuttle Enterprise The Shuttle Orbiter Enterprise (NASA Designation: OV-101) was the first Space Shuttle built for NASA. It was initially constructed without engines or a functional heat shield and was therefore not capable of space operations without a refit. It was intended to be the second space shuttle to fly after the Space Shuttle Columbia even though it was built first, however, it was found to be cheaper to refit a test article (STA-099) into the Space Shuttle Challenger. Originally planned to be called Constitution, the test vehicle was renamed following a write-in campaign after the starship featured on the television show Star Trek, which in turn was named for the various ships named USS Enterprise. Amusingly, in one of the subsequent Star Trek movies
Space Shuttle Atlantis
Space Shuttle Atlantis Shuttle Orbiter Atlantis (NASA Designation: OV-104) In its most recent flight, Atlantis and her six-person crew completed an eleven-day mission in October 2002 to the International Space Station that involved three space walks. Table of contents showTocToggle("show","hide") 1 Flights 2 Related articles 3
The Air Force relucantly agreed, but only after demanding a large increase in capability to allow for launching their projected spy satellites (mirrors are heavy). These were quite large, weighing an estimated 40,000 lbs, and needed to be put into polar orbit, which requires more energy to get to than the more common LEO. And since the AF also wanted to be able to abort after a single orbit (as did NASA), and land at the launch site (unlike NASA), the spacecraft would also require the ability to manuver significantly to either side of its orbital track to adjust for the launching point rotating away from it while in polar orbit - in a 90 minute orbit Vandenberg would move over 1,000 miles, whereas in a "normal" equatorial orbit NASA needed the range would be less than 400. This large 'cross-range' capability meant the craft had to have a greater lift to drag ratio than originally planned. This required the addition of bigger, heavier wings.