| Budget Amount *help |
¥16,380,000 (Direct Cost: ¥12,600,000、Indirect Cost: ¥3,780,000)
Fiscal Year 2019: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2018: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2017: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
|
|---|
| Outline of Final Research Achievements |
For both the detonation initiation in a short distance and the enlargement of the combustor exit, we experimentally clarified the condition for that a detonation entering a diverging cone from a cylindrical tube can pass through the diverging cone. By using the results of the fundamental study, we improved our pulse-detonation thermal-spray gun so that its exit was enlarged from its original size of 10 mm in diameter to 20 or 30 mm. The improved pulse-detonation combustor was stably operated at the original frequency of 100-150 Hz. Furthermore, we demonstrated that the high-melting-point ceramics, that are difficult to be sprayed before the improvement, can be sprayed by using the improved pulse-detonation thermal-spray guns. In addition, on the spraying of materials that could be sprayed even before the improvement, the distance between the spraying-gun exit and the sprayed substrate was enlarged approximately in proportion to the exit diameter.
|
