A glider would be mounted on the "back" of a booster such that the flat, gliding bottoms of both vehicles faced the same way. Once mated, the 90-foot tall pair would be turned vertically and loaded on a train that would carry it, by rail, to its underground launch canyon – image a missile silo big enough for crews to access both vehicles for things like fueling and maintenance. Passengers would arrive at the canyon, which would have an ordinary gate number, by bus since it would be too risky to connect a launch canyon to the terminal by jetway.
With the vehicle ready, the crew and passengers would board, the latter sitting in swiveling chairs that would keep them upright throughout the journey. Once their seat belts were firmly fastened, the booster would roar to life and launch, carrying the glider aloft with it.
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For the first minute and a half, the glider's pilot would be in control of both vehicles; the booster's skeleton crew would be on standby. Then the stages would separate. The glider would slide off guide rails on the booster's "back" and the pilot would ignite its engine. The glider would rocket up to 140,000 feet at a top speed of 8,400 miles per hour. At the same time, the booster's crew would take control of their vehicle and return to the airport for refueling and launch with another glider in tow.