Design Optimization and Parameter Analysis of a Hybrid Rocket Motor-Powered Small LEO Launch Vehicle

Table 11

Velocity increments and velocity distribution ratios of several typical three-stage SLVs.

Name	Stage	Theoretical velocity increment (m/s)	Actual velocity increment (m/s)	Theoretical velocity distribution ratio	Actual velocity distribution ratio
Ро́кот (liquid) [25]	1st	3987	3139	44.12%	41.43%
	2nd	2607	2327	28.85%	30.72%
	3rd	2443	2110	27.03%	27.85%
	Total	9037	7576	—	—
Pegasus (solid) [26]	Carrier	700	236	7.42%	2.90%
	1st	2984	2307	31.64%	28.35%
	2nd	2927	2787	31.04%	34.23%
	3rd	2818	2810	29.89%	34.52%
	Total	9429	8140	—	—
HPSLV of Purdue University (hybrid) [27]	1st	2773	—	26.76%	—
	2nd	3734	—	36.03%	—
	3rd	3851	—	37.20%	—
	Total	10358	—	—	—