42 U.S.C. § 2465c
Section, Pub. L. 101-611, title II, §203, Nov. 16, 1990, 104 Stat. 3206; Pub. L. 105-303, title II, §203(2), Oct. 28, 1998, 112 Stat. 2855, defined "launch vehicle" and "payload". See section 70103(a) of Title 51, National and Commercial Space Programs.