Aero-engine compressor transition duct test tunnel ratio adjusting device
By designing a culvert ratio adjustment device that can selectively block the inner and outer culverts, and using an electric push rod to drive the inner and outer culvert blocking cones to achieve 0%-100% flow area control, the problem of small culvert ratio adjustment range in the existing technology is solved, and the complete blocking and opening of the inner and outer culverts is realized, thereby improving the range and adaptability of culvert ratio adjustment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
- Filing Date
- 2026-05-20
- Publication Date
- 2026-07-17
AI Technical Summary
Existing compressor transition section bypass ratio adjustment devices can only adjust the inner bypass or the outer bypass separately, with a small adjustment range, making it difficult to meet the high fuel efficiency requirements of variable cycle engines under different operating conditions.
Design a duct ratio adjustment device that can selectively block the inner or outer duct. By driving the inner or outer duct blocking cone with an electric push rod, the flow area can be controlled from 0% to 100%, achieving complete blocking and opening of the inner and outer ducts and expanding the adjustment range.
It achieves simultaneous adjustment of the inner and outer bypass ducts, simplifies the device structure, improves the range and adaptability of bypass ratio adjustment, and meets the high-efficiency fuel requirements of variable cycle engines under different operating conditions.
Smart Images
Figure CN122407589A_ABST