NASA is giving researchers until Jan. 31 to submit proposals for flying new technologies aboard suborbital reusable launch vehicles and aircraft such as Zero Gravity Corp.’s G-Force One that fly parabolic trajectories that create a sensation of weightlessness. The U.S. space agency also is requesting information from commercial suborbital reusable launch vehicle providers and commercial payload integrators about carrying the technology payloads. Those responses are due Jan. 20.

The solicitation was issued by NASA’s Flight Opportunities Program, which is designed to foster development of a commercial reusable suborbital transportation industry.

The selected payloads will fly on aircraft that provide parabolic flights services and suborbital reusable launch vehicles capable of flying to altitudes of at least 100 kilometers.

NASA intends to periodically solicit flight proposals for the program through Dec. 31, 2014.