27:16

First Time Firing My New Rocket Propellant

30:49

Using 3XL Condoms to Make a Rocket Nosecone

58:01

Making an atomic trampoline

1:01:31

Are Aerospikes Better Than Bell Nozzles?

29:42

Making pop rocks from scratch (is complicated)

17:18

My Hot-Glue Rocket Is Terrible

20:19

High precision speed reducer using rope

15:51

I Built The First LAMINAR FLOW ROCKET ENGINE