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APPARATUS AND METHOD FOR ACCELERATING AN OBJECT VIA AN EXTERNAL FREE JET

  • US 20200132403A1
  • Filed: 10/23/2019
  • Published: 04/30/2020
  • Est. Priority Date: 10/24/2018
  • Status: Active Grant
First Claim
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1. An apparatus, comprising:

  • an energy source, the energy source configured to convey an amount of energy to a volume of a compressible gas disposed in a chamber and operable to increase a pressure associated with the volume of the compressible gas; and

    an expansion structure configured to be placed in fluid communication with the chamber to receive a flow of the compressible gas in response to the increase in pressure, the expansion structure including an inlet having a first diameter and an outlet having a second diameter greater than the first diameter, the expansion structure allowing the compressible gas to expand as the compressible gas flows from the inlet to the outlet such that a supersonic free jet of the compressible gas exits the outlet,the supersonic free jet of the compressible gas configured to accelerate a projectile disposed outside of the expansion structure.

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