Simplify the following text for a Grade 14 native English-speaking person.
Original: The X-37 's aerodynamic design was derived from the Space Shuttle , hence the X-37 has a similar lift-to-drag ratio , and a lower cross range at high altitudes and Mach numbers than DARPA 's Hypersonic Technology Vehicle .
Simplified: The X-37 's aerodynamic design was derived from the Space Shuttle , hence the X-37 has a similar lift-to-drag ratio , and a lower cross range at high altitudes and mach numbers than the Hypersonic Technology Vehicle .