Im curious if a report similar to the Super Loki report has been written for the Hyperion sounding rockets (Nitrous-HTPB self-pressurized hybrid). At arm's length, the Hyperion specs are respectable and appear reasonable to duplicate. Hyperion 1 6" diameter 100lb Nitrous (my guess) 120k feet Hyperion 1C 6" diameter 100lbs Nitrous 250k - 500k feet --MCS