Chinese Engine Development
- Thread starter jackbh
- Start date
Compressor pressure ratio is too low for WS-10.
OPR is also extremely low for a modern turbofan, only 20.9:1
Some sort of turbofan designed to operate at very high altitudes and speeds more likely. That explains the pressure ratio because you don't want your compressors melting because of the heat.
But why the relatively high bypass ratio, that cannot be good for supercruise as it massively lowers specific thrust.
Exhaust temperature. They wanted this thing to be cool. They are probably entertaining turbofans for supersonic but VLO recon aircraft.
0.8 is not prohibitive. See F101, NK-25, and NK-321. The Boom Symphony engine is intended to supercruise with a BPR of 1. It depends on the flight profile.
None of those engines are capable of supercruise, and Boom, respectfully is a joke.
Joke or not, they’ll have specced their engine design with more knowledge about what is and isn’t possible than you
The F-15 and F-16 could technically supercruise at just above Mach 1 with the F100 and F110, despite being a bit airframe limited. The “optimal” specifications for supercruise will vary with altitude. BPR of 0.8 is probably fine for higher altitudes so long as you don’t need high thrust margin and are not trying to do energy intensive maneuvers. You shouldn’t clutch those internet rules of thumb so tightly.
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What would even be the use case for this, M2+ supercruise for something? Wouldn't modern high speed recon aircraft use TBCC instead.Joke or not, they’ll have specced their engine design with more knowledge than you
The F-15 and F-16 could technically supercruise at just above Mach 1 with F100 and F110s, despite being a bit airframe limited. You shouldn’t clutch those internet rules of thumb so tightly.