Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

I reread the sheet and it says the launch tube is optional. Comments?

April 26, 2017comments launch reread Sheet tube

0

Posted

I reread the sheet and it says the launch tube is optional. Comments?

1 Answer

0

Posted

A The launch tube does help to hold the gasket in place. They are not required, if you use a piece of double-sided tape or something else to hold the gasket in place. Or you can use a short piece of the 1/2″ CPVC (yellow pipe) about 3/4″ long to just hold the gasket in place. The idea is that you can insert something into the soda bottle neck to reduce the nozzle diameter and still achieve an end seal against the gasket. Small diameter nozzles can improve performance of the rocket over the open throat soda bottles. I believe the end seal style of launch pad is superior to internal “O-ring” seals because you can change out the nozzle diameters. The optimum nozzle diameter is unique to each rocket and the online simulators can show you, for your rocket, what is going to get you the greatest altitude.