Can anyone confirm this apparently Ma WeiMing stated in 2017 that iep on a submarine was being developed and tested and in 2025 he a shaftless pump jet propulsor was being developed
Time stamp= 11:50
09V/09VI (095/096) Nuclear Submarine Thread
- Thread starter Hendrik_2000
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Yes and No, Ma Weiming only gave one public interview in 2017, his student did mention their application for a national award for IPES, not just IEP
His papers in recent years still focused on IPES and electromagnetic ejection, the claim of shaftless pump propulsion is unfounded
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Ma did state back then that IEPS would be utilized on a future nuclear submarine.
There was nothing about a shaftless pumpjet.
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Anyway, based on the video (and other past videos) it's pretty clear that Binkov (or their writers/researchers) follow this forum or follow some relevant people on twitter.
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I noticed this last time with the Zhongda 79.
I was the first to propose that container ships could serve as a VLS redundancy at sea to extend air defense coverage against subsonic stealth cruise missiles. Other users discussed its application in the South China Sea and the Taiwan Strait. Chahuahui's "doomsday fleet" theory highlighted the security advantages of the Yangtze River and inland areas.
He was the only guy publicly mentioned/paraphrased all of these points.
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Pretty interesting seeing the comment section, the current cope moved from "Chinese platforms are less advanced" to "China may have the technology but have worse/no doctrine".
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Speaking on the subject of propulsion, while shaftless drives are definitely out of the question. I what feel like is within the possibility is a short shaft system, unlike conventional submarines with a typically long shaft between the turbine and the propulsor, with electric drive you could have the motor at the stern with a short shaft connecting it to the propulsor. Shorter shaft could mean less noise due to less shaft vibration in of itself while being easier to isolate the vibrations from the rest of the ship.
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Speaking on the subject of propulsion, while shaftless drives are definitely out of the question. I what feel like is within the possibility is a short shaft system, unlike conventional submarines with a typically long shaft between the turbine and the propulsor, with electric drive you could have the motor at the stern with a short shaft connecting it to the propulsor. Shorter shaft could mean less noise due to less shaft vibration in of itself while being easier to isolate the vibrations from the rest of the ship.
A shorter driveshaft would be consistent with what appears to be the stern of the Type-095 tapering sharply?
Rim driven systems will probably stay experimental for a long time. At least outside small UUVs... I don't expect one on the 09VA. I believe most of their noise benefits are achievable with normal pumpjets too. For example German submarines and some civilian ships famously have hub devices to greatly reduce hub cavitation. Tip vortices can be eliminated by having the tips connected. When you look at the US SECNAV budget documents, you see that the Virginia had more than one propulsor over its various blocks. And the latest ones are likely to have connected tips because they call them "hybrid propulsors" on the documents. The US previously used connected-tip propellers on late-block Los Angeles classes.
The following photos are the German hub device and a LA-class with a connected-tip prop
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So basically the same principle behind vortex generators on planes?. Cause a vortex to delay layer detachment thus decreasing drag and noise