GE Aerospace Demonstrates Hypersonic Dual-Mode Ramjet with Rotating Detonation Combustion
Rotating Detonation Combustion (RDC) could power super-efficient hypersonic vehicles with longer range that exceed MACH 5, or >4,000 MPH
This seems to be a huge deal, Is there any project that incorporates a full dual-mode ramjet or RDE, that can go hypersonic under development at AECC ?
As for GE's engine, well rotating detonation engines have been flown by Chinese organisations for some time already. Even googling it shows
some shreds of literature on these.
Dual mode engines have been around for ages. US Boeing Hy-Fly (not sure if correct spelling) has been flying ramjet, scramjet (really a scramjet is a subtype of ramjet) "dual mode" engine. This solution and intake design is so universal, it's been used outside of Boeing's design.
Combined cycles are all the rage. TengYun, and Shenlong programs (Shenlong uses engine called Yunlong) use some combined cycle/s. SSTO and TSTO are not the actual aim since these concepts are rather silly. Therefore the crafts developed by these two umbrella programs are probably testing various types of combined cycle engines. At least in the previous decade. They would have refined which engine types to use by now.
Possibly a 601 Institute project for a hypersonic craft:
This program discussed an oblique detonation engine powered craft as part of some mothership, daughtership separation done. Nothing confidential shown by state media obviously. Can read up on US intel and reports (including rare leaks) that sometimes hint at capabilities and what they've been watching in space and using ground based sensors. Anyway possibly one of the Chinese SSTO or TSTO programs involved with the separation exercise.
31st institute of CASIC successfully conducted a powered flight back in 2021 for Tengyun program where the state media officially declared was first in creating
many international firsts in one fell swoop. The banner indicates a combined cycle engine test flight, one of these "firsts". Others could involve control, guidance, and communications related achievements. Perhaps US have done so without Chinese intelligence being aware but from behaviour, Chinese claim 70 when they are at 100 already
Proven track record of understating, hiding strength and abilities and delivering more than adversaries and others expect.
Guide Vaneless Rotating Detonation Engine -
RDE designed for UAVs -
Another Tsinghua project for RDE -
Kerosene fueled RDE seems to be popular within Chinese organisations/institutes.
RDE is such a dime a dozen thing in China even small timers do prototypes and ground tests. Big boys fly with the US watching closely.
As for boring dual mode ramjet-scramjet.