An abort valve is a very important safety feature of a launcher. On occasions you will encounter a situation where an already pressurised rocket needs to be prevented from leaving the pad and pressure in the rocket needs to be released. Some reasons for aborting a launch include:
- The recovery system malfunctions or accidentally deploys while the rocket is still on the pad.
- The range may become unsafe such as when people, vehicles or animals enter the range.
- A slow leak may develop that might lead to a catastrophic failure if pressure is not released quickly.
You may want to prevent water from going back down the air line for two main reasons:
- Keep as much of the water in the rocket as possible.
- The water may damage your pump if it is designed only for air.
It should be possible to attach this mechanism to the air line of most existing launchers if they're not already fitted with non-return valves. In the procedure below we integrate a simple non-return valve into the pressure release valve.
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Step 1: Materials Needed
- 2 x Gardena quick connectors
- Gardena extension adaptor
- Hose clamp
- Epoxy glue
- Sewing pin with a round head
- Nylon String