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M-3H Satellite Launch Vehicles

M-3H Satellite Launch Vehicles

An extension of the first stage motor casing of the M-3C increased propellant to achieve a greater payload capability. The M-3H belongs to the same generation as the M-3C. It could send a 300 kg satellite into low earth orbit.

Mission by M-3H Launch Vehicle

The vehicle M-3H-1 is described as follows

    1st stage SOB 2nd stage 3rd stage 4th stage
Total length m 23.80 5.794 8.895
(8.020)
3.059 1.408
Maximum diameter m 1.410 0.310 1.410 1.136 0.932
Weight (ig.) kg 44714 4120 11307 1436.4 187.25
Weight (b.o.) kg 17597 1371 3960 351.0 141.15
Propellant weight kg 27098 2737 7195 1083.7 45.55
Freon kg     56.0    
H2O2 kg     84.7    
Mass ratio   2.540 2.996 2.817 4.087 1.323
Specific impulse sec 239 219 277 284 281
Center of gravity (ig.) % 60.96 62.90 63.75 58.66
Center of gravity (b.o.) % 42.01 53.02 47.73 67.40
Ix (ig.) kg.m.sec2 1839 305.8 18.60 1.281
Ix (b.o.) kg.m.sec2 659.9 105.2 3.274 1.210
Iy (ig.) kg.m.sec2 188107 3258 46.95 2.638
Iy (b.o.) kg.m.sec2 83114 1928 22.96 1.483
Net payload kg     149.98   SA 128.34
Nozzle expansion ratio   6.34 3.57 21.80 41.53 43.07
Nozzle exit diameter mm 1146 302.2 1078.3 696.0 229.7

*The M-3H-1 was equipped with an optional kick stage to perform its highly elliptical orbit mission.