Solid fuel engine for upper stage applications
| Name | Manufacturer | Mass (kg) | Mass. Empt (kg) | Mass. Prop (kg) | Prop Mass Fract | Prop | Casing | Thrust Vac (kN) | ISP (sec) | Tot. Imp. (kNs) | Burn (s) | Diam (m) | Length (m) | Remark |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Star-20-Spherical (TE-M-251) | Thiokol | 123.0 | 8.1 | 114.8 | 0.934 | Solid | FG | ? | 234.0 | 296.25 | ? | 0.50 | ? | |
| Star-20 (TE-M-640-1) | Thiokol | 300.9 | 27.7 | 273.2 | 0.908 | Solid | FG | ? | 286.5 | 771.77 | ? | 0.50 | ? | |
| Star-20A (TE-M-640-3) | Thiokol | 314.3 | 28.3 | 286.0 | 0.910 | Solid | FG | ? | 291.9 | 822.48 | ? | 0.50 | ? | |
| Star-20B (TE-M-640-4) | Thiokol | 306.7 | 32.8 | 273.8 | 0.893 | Solid | FG | ? | 289.1 | 776.53 | ? | 0.50 | ? |
FG = Fibreglass
