Abstract
Solenoid valves cannot achieve both high frequency and large flow rate at the same time at present. A new type of cam-driven rotary valve was designed to replace the solenoid valve to control the intermittent supply of propellant and purge gas in the pulse detonation rocket engine (PDRE). Liquid gasoline and oxygen-enriched air were utilized as fuel and oxidizer, respectively. Experiments at different operation frequencies were carried out based on this rotary valve. Experimental results show that supply pressure of the propellant and purge gas and ignition phase play essential role in obtaining the stable detonation. With the operation frequency increasing, the PDRE can be operated stably by reducing the purge gas pressure or adjusting ignition phase from 1 Hz to 10 Hz. However, only the propellant pressure will increase when the operation frequency exceeds 10 Hz. Operation frequency of the rotary-valved PDRE can be operated up to 30 Hz in the present study.
| Original language | English |
|---|---|
| Pages (from-to) | 860-864 |
| Number of pages | 5 |
| Journal | Tuijin Jishu/Journal of Propulsion Technology |
| Volume | 34 |
| Issue number | 6 |
| State | Published - Jun 2013 |
Keywords
- Frequency
- Pressure
- Pulse detonation rocket engine
- Rotary valve