Do most solenoid valves work for high acceleration loads?

In summary, the fuel system for the ramjet experiment is not designed for this type of acceleration and may not survive the launch. However, Adel may be able to use basic principals to determine if the actuator pin will malfunction.
  • #1
hey guys,
i'm currently designing a fuel system for a ramjet to be tested onbaord a sounding rocket but it's going to pull around 100g's of acceleration.

i can't get a hold of the manufacturer (still waiting for an email) and the supplier here in aus hasn't got a clue if it will survive the launch and operate properly after.

so i was wondering if any of you guys would know if these suckers are designed for this stuff or not:

(the G 1/2 one)


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  • #2

i finally spoke to one of their staff today and he explained that they don't do that kind of testing for this type of valve.

does anyone know how to work out if the actuator pin will malfunction? like is their theory behind these things in enough detail to do that?

i'm guessing the only way to know for sure is to test it.
  • #3
Hi Adel',
You should be able to use basic principals on something like this. F=ma always applies. The force produced by springs and solenoids doesn't change due to the valve's overall acceleration, but there are additional forces created by the accelerating parts. You'll find the valve has to be looked at from various angles as there will be forces on the poppet in the direction of the poppet's motion if it coincides with the acceleration of the valve overall. Side loads on the poppet would similarly create increased frictional loads.

Start by getting a good drawing of the valve along with spring loads, masses, etc... and just start looking at what an acceleration in any given direction will do. Note that it may also cause something such as the poppet to oscilate if it unloads a spring sufficiently such that a part (ex: the poppet) comes away from a stop.

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