US Air Force |
Thor Burner I | Thor Burner II | Thor Burner IIA | Thor-ISS | ||||||
Overall |
Operational | from | 20.05.1965 | 16.09.1966 | 14.10.1971 | 11.09.1976 | ||||
|
to | 31.03.1966 | 08.06.1971 | 19.02.1976 | 14.07.1980 | |||||
Orbital flights | 4 | 12 | 8 | 5 | ||||||
Payload weight | t | MEO | 0.15 | MEO | 0.25 | MEO | 0.30 | MEO | 0.50 | |
Gross liftoff weight | t | |||||||||
Gross propellant weight | t | 45.67 | 46.09 | 46.29 | ||||||
Total length | m | 22.01 | ~23.50 | |||||||
Max. diameter (span) | m | |||||||||
Total liftoff thrust (s.l.) | kN | 676.1 | 676.1 | 676.1 | 676.1 | |||||
Total impulse (vac) | MN*s | 127.0 | 128.2 | 128.7 | 131.1 | |||||
Fairing |
Total length | m | 3.35 | 5.89 | ||||||
Diameter | m | 1.65 | 1.65 | 1.65 | 1.65 | |||||
Total weight | t | 0.304 | ||||||||
Stage 3 |
Name | (Star 13A) | Star 26B | Star 37S | ||||||
Length | m | |||||||||
Diameter | m | 0.34 | 0.66 | 0.93 | ||||||
Liftoff weight | t | 0.038 | 0.261 | 0.711 | ||||||
Propellant weight | t | 0.033 | 0.238 | 0.658 | ||||||
Engines | TE-M-516 | TE-M-442-1 | TE-M-364-15 | |||||||
Propellant | solid HTPB | solid HTPB | solid HTPB | |||||||
Total thrust (vac) | kN | 5.87 | 34.63 | |||||||
Specific impulse (vac) | N*s/kg | 2809 | 2664 | 2817 | ||||||
Burn time | s | 15.9 | 18.3 | |||||||
Total impulse (vac) | MN*s | 0.09 | 0.6 | 1.9 | ||||||
Stage 2 |
Name |
Star 20 | Star 37B | Star 37B | Star 37XE | |||||
Length | m | |||||||||
Diameter | m | 0.50 | 0.93 | 0.93 | 0.93 | |||||
Liftoff weight | t | 0.301 | 0.718 | 0.718 | 1.150 | |||||
Propellant weight | t | 0.273 | 0.654 | 0.654 | 1.067 | |||||
Engines | TE-M-640-1 | TE-M-364-2 | TE-M-364-2 | TE-M-714-1 | ||||||
Propellant | solid HTPB | solid HTPB | solid HTPB | solid HTPB | ||||||
Total thrust (vac) | kN | 27.13 | 44.48 | 44.48 | 51.10 | |||||
Specific impulse (vac) | N*s/kg | 2809 | 2854 | 2854 | 2899 | |||||
Burn time | s | 28.4 | 41.8 | 41.8 | 59.6 | |||||
Total impulse (vac) | MN*s | 0.8 | 1.9 | 1.9 | 3.0 | |||||
Stage 1 |
Name | Thor DM-18 | Thor DM-18 | Thor DM-18 | Thor DM-18 | |||||
Length | m | 18.66 | 18.66 | 18.66 | 18.66 | |||||
Diameter | m | 2.44 | 2.44 | 2.44 | 2.44 | |||||
Liftoff weight | t | 48.60 | 48.60 | 48.60 | 48.60 | |||||
Propellant weight | t | 45.40 | 45.40 | 45.40 | 45.40 | |||||
Engines | MB-3-I | MB-3-I | MB-3-I | MB-3-I | ||||||
Propellant |
Kerosene/LOX |
Kerosene/LOX |
Kerosene/LOX |
Kerosene/LOX |
||||||
Total thrust (s.l.) | kN | 667.2 (+8.9) | 667.2 (+8.9) | 667.2 (+8.9) | 667.2 (+8.9) | |||||
Specific impulse (s.l.) | N*s/kg | 2456 | 2456 | 2456 | 2456 | |||||
Burn time | s | 164.4 | 164.4 | 164.4 | 164.4 | |||||
Total impulse (vac) | MN*s | 126.2 | 126.2 | 126.2 | 126.2 |