Question about two-stage light gas guns

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Abdalrahman Azab
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Hello ... I had a question about the capabilities of the two-stage light gas guns which are used to study the effect of small meteors on spacecraft shields ... is it theoretically possible to achieve velocity above 7 km / s for a projectile of about 16 grams weight and 15 mm diameter using a gun With total length 15 to 10 meters - 10 meters excluding the launch tube and 12.5 meters including the launch tube, 15 meters including the Target capsule for example - I think this is practically impossible.. Is this possible? and What is the shortest tube length of the pump to achieve this speed ... Thank you.
 
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Abdalrahman Azab said:
Summary:: What is the shortest pump tube length sufficient to achieve a velocity of 7 kilometers per second for a projectile weighing approximately 15 grams? Is it possible to achieve this with a 5-6 meter long pump tube? .. I think this is impossible

Hello ... I had a question about the capabilities of the two-stage light gas guns which are used to study the effect of small meteors on spacecraft shields ... is it theoretically possible to achieve velocity above 7 km / s for a projectile of about 16 grams weight and 15 mm diameter using a gun With total length 15 to 10 meters - 10 meters excluding the launch tube and 12.5 meters including the launch tube, 15 meters including the Target capsule for example - I think this is practically impossible.. Is this possible? and What is the shortest tube length of the pump to achieve this speed ... Thank you.
Welcome to PhysicsForums. :smile:

What reading have you done so far on this? What information sources have you found? It looks to be a pretty well developed technology (although highly specialized), with good datapoints for what is being used right now. I started at Wikipedia reading about Hypervelocity Projectiles, and ended up at their page on Light Gas Guns:

https://en.wikipedia.org/wiki/Light-gas_gun

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