Japan successfully launches smallest orbital launcher

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Andrej

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https://spaceflightnow.com/2018/02/02/ss-520-5-tricom-1r-test-launch/
 
The SS-520-5’s first stage, fitted with spin-stabilizing fins, was loaded with nearly 3,500 pounds (1,587 kilograms) of HTPB solid fuel.

A gaseous nitrogen thruster package was designed to keep the SS-520-5 rocket pointed correctly during a one-and-a-half minute coast phase between the launcher’s first and second stage burns.

The second and third stages consumed 716 pounds (325 kilograms) and 172 pounds (78 kilograms) of propellant, respectively.
Click to expand...

Total of 4300 pounds of solid propellant. That sounds crazy enough, but the telemetry, guidance, and launch license are more difficult (in that increasing order).
 
Commercial rockets get smaller, amateur rockets get bigger. We may have reached the crossover point. (half a meter in diameter!)

Best -- Terry
 

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