 The ram-air inflated parafoil used in the flight test program was the largest in the world, with a surface area of 7,500 ft² (700 m²).The parafoil was actively controlled by an onboard guidance system that was based on GPS navigation.NASA's plans for the development program did not include an operational test of the actual CRV, which would have involved it being launched to the ISS, remaining docked there for up to three months, and then conducting an "empty" return to Earth.