Big piston engines
Not exactly a history question. But what is the biggest and/or most powerful piston aero engine still available new?
|
And what was the most powerful piston engine ever in service? Which one had the biggest capacity? Which was the most reliable of the post war big piston engines?
|
Surely the 'Corncob' must figure in there somewhere?
Maybe not too reliable but impressively big and powerful. |
Think a 720 is one of the largest.
|
|
Bigger yet.....
The Douglas C-124C Globemaster II had four 3,800 h.p. Pratt and Whitney R-4360-63A radials.
Any advance on that? Ian B-B |
is that the one with the Parts Recovery Turbine ?
|
Power Recovery Turbine
"Parts" (mechanics joke) recovery turbines were used on the P&W R-4360-51 VDT (variable discharge turbine) intended for the B-36C but used on the YB-50C Superfortress 4,300 h.p. according to Wiki. The Wright engines also had them.
IanB-B |
Any advance on that? https://upload.wikimedia.org/wikiped...Tu-85front.jpg |
Only two built but the Lycoming XR-7755 at 5000hp seems to be the largest piston engine to run?
|
LOL !!
Everybody that has posted needs to go back and read the original posters' question. C2j |
^ I noticed that too, "STILL AVAILABLE NEW" being the valid part!
|
Thought you could still buy a Lycoming IO-720 new, no chance with those radials.
|
The Shvetsov ASh-62 is in production under licence by WSK-PZL in Poland.
To quote Wikipedi: The ASh-62 was a development of the Wright R-1820 Cyclone that had been built in Russia under licence as the Shvetsov M-25, the main improvements including a two-speed supercharger and a more efficient induction system. Power was increased from the Cyclone's 775 hp to 1,000 hp. First run in 1937, licenced versions are still in production by WSK "PZL-Kalisz" in Poland as the ASz-62 (as of 2007). The Ash-62 was also produced in China. It is estimated that 40,361 were produced in the USSR. Polish-built ASz-62IR engines are compatible with FAR-33 requirements. Further developments in Poland are the K9-AA, K9-BA and K9-BB engines, with take-off power of 1178 hp (860 kW), indicated power 698 kW. |
Everybody that has posted needs to go back and read the original posters' question. |
Poster number 2 should have started his own thread, where he would have gotten the above answers. instead of subverting poster number 1's thread...:ugh:
C2j |
Speaking as poster 1, part of the reason I asked the question on here rather than anywhere else was because I knew I'd get a lot of additional and interesting if not strictly pertinent facts. Such as the story of the XR-7755.
|
The Lycoming IO720 variants are what spring to mind in the GA Avgas world and I have fond memories of the New Zealand Fletcher & a few lovely Commanche 400s that were popular in Australia in the 60s, 70s and 80s. (Sadly, I was never able to fly either of these types, but those who did loved them). I wonder what is available in emerging automotive conversions (Chevs) and Diesal engines?
Dr J, Exactly. This is a really interesting, and enjoyable, thread and the opening question at least has a chance of being answered. C2j, I guess you might be right about post # 2. Maybe. If that's what the SOPs require. But this is Pprune not a peer reviewed journal and what you have just experienced is known as "Thread Drift", which brings nuance, occasional annoyance and sometimes a smile to these forums. The Original Post of this Antipodean thread from Long ago has since changed YHMB to the correct YMHB. It's a fine example of Thread Drift. :ok: |
A while back, I saw an article (with pix), which, of course, I can't find now,
about a chap in the States who'd created a double P&W R4360. He'd coupled two Wasp Majors together in tandem. It runs, apparently (but for how long, I wonder?). Some people need something to keep them off the streets, though. ;) |
I've seen the R4360 powered Sea Fury "Dreadnaught" and F2G Corsair flying in the US - Dreadnaught was racing at Reno - and they both sound magnificent.
Not the fastest but probably the most powerful single engined aircraft flying these days? Nowt wrong with thread drift if it's along the right lines! :ok: |
All times are GMT. The time now is 12:41. |
Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.