Author Topic: Contra rotating propellors (Read 13584 times)

agent 009 · « **on:** May 08, 2005, 03:15:43 AM »

My P-38 neighbor told me that these were not a success as they could not be adjusted, feathered what ever the correct word is. any thoughts here? Brits had one that went 460 mph, but never went into production.

eddiek · « **Reply #1 on:** May 08, 2005, 03:20:30 AM »

Dunno....Republic's XP-47J Superbolt went 504mph at alt and it used contrarotating props.

Pei · « **Reply #2 on:** May 08, 2005, 03:27:14 AM »

A number of British production aircraft used contra-rotating props and seem to have been reasonably successful. I can't see why they couldn't be faethered, given enough clearance between the two props.

agent 009 · « **Reply #3 on:** May 08, 2005, 03:27:53 AM »

Hope link works. Even Italians experimented with these.

Might Have Beens: Italian Twin-Engined Fighters, 1943
worldatwar.net/chandelle/v3/v3n1/italtwin.html - 9k - Cached - More from this site

agent 009 · « **Reply #4 on:** May 08, 2005, 03:28:47 AM »

Good point Pei. In fact here's a good photo of just that at this site.

Contra-rotating propellers - encyclopedia article about Contra-rotating propellers.
... Contra-rotating propellers, also referred to as coaxial contrarotating propellers, are a complex way of applying the ... Contra-rotating propellors. Contra-zoom ...encyclopedia.thefreedictio nary.com/Contra-rotating+propellers - 36k - Cached - More from this site

Some were a bit loud & could create tone deafness, but even these probs were worked out.

agent 009 · « **Reply #5 on:** May 08, 2005, 03:50:57 AM »

Spit 21

A single Mk. 21 fitted with a Griffon 85 was tested with a 6 blade contra-rotating propeller, however, it was not used on production aircraft because the system was unreliable and heavy. A revised system was used on the Seafire 47 with great success.

Xjazz · « **Reply #6 on:** May 08, 2005, 04:34:10 AM »

Seafire 47 picture at bottom of the page

http://www.supermarine-spitfire.co.uk/supermarine_seafire.html

Angus · « **Reply #7 on:** May 08, 2005, 04:47:43 AM »

Seafire 47 had it as standard.
I think also the Avro Shackleton.
Maybe also the Skyraider?

Anyway, once the technical bugs were flushed away, it was a success.

I have Jeff Quill's description of a mechanical failiure somewhere, will see if I find it and type

Good day all.

GScholz · « **Reply #8 on:** May 08, 2005, 01:08:11 PM »

Fastest prop plane ever:

575 mph.

Angus · « **Reply #9 on:** May 08, 2005, 01:22:00 PM »

Tupovlev?
The Bear?

GScholz · « **Reply #10 on:** May 08, 2005, 01:28:49 PM »

Rino · « **Reply #11 on:** May 08, 2005, 02:03:38 PM »

Figgers the guy from Iceland would know right away

. They
did drive past your house all the time after all.

agent 009 · « **Reply #12 on:** May 08, 2005, 03:08:51 PM »

Check out the MB 5

Martin-Baker MB5 Replica Nears Completion
aviation history: Martin-Baker Aircraft Company MB5 Replica built by John and Carol Marlin. A story by: Mark S. Daniels- ... Martin-Baker MB5 Replica. Nearing Completion At Reno Stead Airport ... The Marlin MB5 replica is modeled after the Martin-Baker Aircraft Company prototype fighter once referred to as ...http://www.aafo.com/racing/news/00/MB5_1.htm - 17k - Cached - More from this site

GScholz · « **Reply #13 on:** May 08, 2005, 03:29:26 PM »

That's a nice looking airplane!

hawker238 · « **Reply #14 on:** May 08, 2005, 03:43:37 PM »

I thought that was called counter-rotating?