Heisenberg
Member
- Joined
- May 21, 2009
- Messages
- 19
- Reaction score
- 0
Which is a better rule of thumb for selecting a motor for a specific rocket, the 5 to 1 thrust to weight ratio, or the minimum launch rail/rod velocity? It appears to me the 5 to 1 rule of thumb is much more frequently cited. I've only seen the minimum velocity cited on a few places namely info-central. org and thurstcurve.org but they both use a different velocity for the minimum.
Brian
Brian