Amateur rocket means an unmanned rocket that:
(1) Is propelled by a motor or motors having a combined total impulse of 889,600 Newton-seconds (200,000 pound-seconds) or less; and
(2) Cannot reach an altitude greater than 150 kilometers (93.2 statute miles) above the earth's surface.
14 CFR § 1.1
As used in Subchapters A through K of this chapter, unless the context requires otherwise: