Strap-on boosters

Name	motor	Length	Diam.	Mass		Thrust s.l.	Isp s.l.	Thrust vac	Isp vac	Propellant	Burn time	Flow rate	Total Imp.
Name	motor	m	m	tons		kN	N*s/kg	kN	N*s/kg	tons	s	t/s	kN*s
Castor I	TX - 33- 52	5.72	0.79	4.214		149.1	1658	217.6	2420	3.327	37	0.0899	8.052
Castor II	TX - 354	6.04	0.79	4.476		157.7	1701	229.2	2472	3.728	40.2	0.0927	9.217
Castor IV	TX - 526	9.07	1.01	11.410		379.3	2268	424.4	2538	9.394	56.2	0.1672	23.846
Castor IVA	TX - 780	9.20	1.02	11.628		452.2	2332	507.8	2618	10.101	52.1	0.1939	26.449
Castor IVAXL	TX - 780 XL	13.50	1.02	14.845		530.5	2342	595.1	2627	13.109	57.9	0.2265	34.438
Castor IVB	TX - 859	8.98	1.02	11.526		385.2	2337	432.1	2622	9.969	60.5	0.1648	26.141
Castor IVBXL	TX - 859 XL	13.25	1.02
GEM-40	ATK	11.52	1.02	13.082	Ground-lit	447.1	2406	499.3	2686	11.767	63.3	0.1859	31.618
GEM-40	ATK	11.52	1.02	13.082	Air-lit	487.1	2621	516.4	2779	11.767	63.3	0.1859	32.699
GEM-46 TVC	ATK	12.89	1.17	19.292	Ground-lit	537.7	2377	608.1	2688	17.010	75.2	0.2262	45.737
GEM-46	ATK	12.89	1.17	19.047	Air-lit	579.3	2561	628.5	2779	17.010	75.2	0.2262	47.405
GEM-60 TVC	ATK	~14	1.52	33.798	Ground-lit	826.9	2513	885.9	2693	29.904	90.9	0.3290	80.528
GEM-60	ATK	~14	1.52	33.199	Air-lit	851.5	2554	899.9	2699	29.904	89.7	0.3334	80.704