Volume 27 Issue 12
Dec.  2012
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DING Ji-ping, JI Hong-hu, SI Ren. Cooling characteristics of ramjet engine combustor with inclined multihole heat shield[J]. Journal of Aerospace Power, 2012, 27(12): 2699-2705.
Citation: DING Ji-ping, JI Hong-hu, SI Ren. Cooling characteristics of ramjet engine combustor with inclined multihole heat shield[J]. Journal of Aerospace Power, 2012, 27(12): 2699-2705.

Cooling characteristics of ramjet engine combustor with inclined multihole heat shield

  • Received Date: 2011-12-22
  • Publish Date: 2012-12-28
  • Based on numerical investigation, the characteristics and design method of ramjet engine combustor with inclined multihole heat shield was researched.First, the temperature distribution of ramjet engine combustor with no-hole heat shield was calculated, and then, according to the temperature distribution, the array of inclined holes in the heat shield (plan A) was designed, after that, the temperature distribution of inclined multihole heat shield was calculated.Using similar methods after two more distribution improvements (plan B and plan C), the non-uniform distributed solutions of inclined multihole which met the demand for the cooling was obtained.The results show that using the design approach in cooling flow reduced from 17.45% of plan A to 14.99 % of the plan C, the lowest cooling efficiency of inclined multihole heat shield improves from 70% of plan A to 85% of plan C.

     

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