The
Astroliner, in theory, eliminates the two solid rocket boosters on the side of
the shuttle, and replaces them with a 747 aircraft. Which will tow the
Astroliner off the ground and into the air to about 20,000 feet. <span>60 years ago,first demonstration of the basic concept of
towing an un-powered aircraft behind a powered aircraft and then releasing it
for autonomous flight. It was first accomplished with the German ME321
transport glider. </span>
