What engine is this

[john_p]

Thought I saw some Rolls Royce markings but nothing with a model on. Anyone know what they are?

[dr_gn]

john_p said:

Thought I saw some Rolls Royce markings but nothing with a model on. Anyone know what they are?

Looks kind of like an Avon, but minus the compressor.

[IforB]

They could be early Avons with the annular combustion cans, but it doesn't look quite right at the back end.
It probably is though.

Edited by IforB on Monday 27th July 00:27

[Eric Mc]

Where?

[dr_gn]

IforB said:

They could be early Avons with the annular combustion cans, but it doesn't look quite right at the back end.
It probably is though.

Edited by IforB on Monday 27th July 00:27

Could be an industrial / marine version? that would explain the different back end.

[john_p]

It's at the aircraft scrapyard at Booker, the same place I saw the Dart Herald being scrapped

Hmm, Rolls Royce Dart..

[dr_gn]

john_p said:

It's at the aircraft scrapyard at Booker, the same place I saw the Dart Herald being scrapped

Hmm, Rolls Royce Dart..

Combustion chambers are more skewed on the Dart I think.

[anonymous-user]

It looks like an Avon from a Comet.

Maybe.

[john_p]

They do get some RAF stuff coming through, so maybe Avons from the Canberra?

[anonymous-user]

Could be an RAF C2 Comet engine.

[Vipers]

Probably an attempt at the artic land speed record

[MOTORVATOR]

Prototype version of one of these

[IforB]

Nah, those are axial flow engines...........

[FourWheelDrift]

Yep, not Avons. Found these images which are a bit clearer.

[anonymous-user]

Looks like Avons to me.

[Invisible man]

Odd looking thing, it has a centrifugal type combustion chamber arrangement with an axial flow compressor at the front

[Invisible man]

Avon axial



Derwent centrifugal

[IforB]

Invisible man said:

Avon axial



Derwent centrifugal

Early Mk's of Avons had annular combustion chambers.

The Derwents were a bit small and the again the back end is the wrong size and shape for it to be a Derwent.

Edited by IforB on Monday 27th July 11:57

[FourWheelDrift]

This is an early Avon, the rear of the engine beyond the combustion chambers is different to the mystery engine.

[Invisible man]

Interesting, can't find any images of the early axial flow version though, I am not suggesting these are Derwents, just using the image to describe a centrifugal type layout

found one.....unlikely to be any of these lying around though

Edited by Invisible man on Monday 27th July 12:12