Very cool German D motor from the Flemish Rocket Organisation (Vlaamse Raket Organisatie).

German D7-3
German rocket motor - D7-3
  • Total impulse: 20 Ns
  • Average thrust: 12 Ns
  • Thrust duration: 1.7 s
  • Dimensions (W x L): 23 x 70 mm

Russian MRD20-10 (D Motor)
Russian rocket motor - MRD20-10       
  • Total impulse: 20 Ns
  • Average thrust: 10 Ns
  • Thrust duration: 2 s
  • Dimensions (W x L): 20,2 x 85 mm