Chinese Engine Development

Blitzo

Blitzo

Lieutenant General
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latenlazy said:
Well. Hmm. Now I’m really scratching my head to think if there was a bigger one. Maybe the 093B having VLS?
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Considering we haven't seen what 09IIIB looks like yet, I'd say the jury is very much out on that one.

In fact I dont' think 09IIIB has even been launched, and my understanding is still that we expect it to have VLS
 
by78

by78

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An AVIC poster.

51832927418_1bb5b061cb_o.jpg
 
A

Andy1974

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Seems that fuel vaporization is the key breakthrough here..

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A two-stage rocket booster was used to assist the test flight, CCTV said, noting that after the separation of the first stage, the second stage sent the engine to the predetermined height and velocity, and that was when the air inlet of the engine began to breathe in air very efficiently, and the fuel supply system began to spray vaporized jet fuel into the combustion chamber.
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Then the ignition system started properly, the combustion chamber entered combustion status as planned, the engine worked in a stable manner and provided constant thrust, marking the complete success of the test flight, CCTV reported.

A computer-generated video shows that the second stage rocket booster did not separate from the engine, and it opened a parachute to land in a desert area, so it could be recovered.

The test gathered data on the effects caused by the parameter changes of the working environment to the operation characteristics of the engine's combustion chamber under real flight conditions, the report said.

It also thoroughly tested the engine's real work characteristics, validated the practicability of the technology and provided test data and accumulated experience to make this new technology into products, CCTV said.
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Under such circumstances, airflow needs to be slowed down after it enters the inlet to blend it with the fuel, where fuel vaporization is a good idea to apply as it can blend the fuel and air very well to guarantee stable and effective combustion, Wang explained, noting that this could be the breakthrough in the test.
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Tirdent

Junior Member
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Andy1974 said:
Seems that fuel vaporization is the key breakthrough here..

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Yup, for storable, high-density hydrocarbon fuels it is, and they're a necessity for a weapon, because in a scramjet (supersonic combustion ramjet) flow velocity in the combustion chamber is above Mach 1.0. Vaporizing the fuel quickly enough to leave time for it to combust before being blown out of the back end is a key challenge (along with keeping the flame from going the same way). Most experimental scramjets flown to date were hydrogen-fueled partly for this reason (another being that hydrogen makes a good heat sink), but its cryogenic nature means it's a non-starter for military applications. An interesting parallel to the early challenges of jet engine combustion chambers, and Ohain's use of hydrogen fuel in his first demonstration runs.
 
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