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Related Experiment Videos

A gasdynamic gun driven by gaseous detonation.

Jinping Li1, Hong Chen1, Shizhong Zhang1

  • 1State Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China.

The Review of Scientific Instruments
|February 1, 2016
PubMed
Summary

A novel detonation-driven gasdynamic gun offers superior launching power compared to conventional systems by utilizing chemical energy. However, its complex internal ballistics require careful consideration for conditional use.

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Area of Science:

  • Engineering
  • Physics
  • Materials Science

Background:

  • Conventional gasdynamic guns face limitations in driving capability and propellant constraints.
  • Existing high-pressure gas guns require substantial initial pressures for effective projectile launching.
  • Gunpowder propulsion presents inherent safety and performance limitations.

Purpose of the Study:

  • To develop and investigate a gasdynamic gun powered by gaseous detonation.
  • To overcome the limitations of traditional high-pressure gas and gunpowder-driven systems.
  • To evaluate the performance, feasibility, and internal ballistics of the detonation-driven gasdynamic gun.

Main Methods:

  • Experimental investigation of the gasdynamic gun's performance.
  • Numerical simulations to model the internal ballistic processes.

Related Experiment Videos

  • Comparative analysis with conventional high-pressure gas guns, including hydrogen-driven systems.

    • Main Results:

    • Achieved significantly higher launching capability by harnessing the chemical energy of the driver gas.
    • Required an order of magnitude lower initial pressure compared to hydrogen-driven systems for similar launching conditions.
    • Observed complex internal ballistics with impulse loads during projectile acceleration, unlike smooth acceleration in conventional guns.

    Conclusions:

    • The detonation-driven gasdynamic gun demonstrates practical feasibility and superior performance.
    • The system offers a more efficient energy conversion method compared to high-pressure gas systems.
    • The observed impulse loading necessitates conditional application of this advanced gasdynamic gun technology.