rharshberger
Well-Known Member
Were the G110 and G55 part of that fun? I love those two motors and have one of each left, for my Lil' Fusion known as Vanishing Act.Somewhere on TRF is the story of how Scott Pearce and I came up with the 18mm E45/F55 and 24mm G42 motors.
The whole process was "Mostly Harmless".
In a minimum diameter/minimum mass rocket the E45/F55 could exceed Mach 1.
Our speed trials with these motors did not return usable data.
However, a rocket powered by a 18mm D21 motor was confirmed to pass the Speed of Sound (Mach 1.016).