20 N Thrust in May 2022

I needed more thrust to exit the rail guide at a higher velocity. So, I increased the throat diameter to 6 mm. Not only did I get more thrust, but my characteristic velocity increased to 1662 m/sec. A few more test like this and I'll be ready to launch the Mark I Viper. Read the May 2022 end of month report at www.fisherspacesystems.com.