Napier Sabre

[johnbr]

the Sabre, I think that the criticisms of Napier's management and the commentary on how things changed after EE were brought on to the scene are borne out by the way in which the power output from the engine, the early Typhoons were flying with 2,200hp but by 1945 the Sabre VII was running at 3,055 hp in Fury prototypes and as we see from the E.122 there was a development path to 3,350hp. It is also interesting to note that due to the large base power of the Sabre VII the type would still give 2,000hp at 20,000ft. The E.123 sounds very interesting, I also recall a proposal for a 32 cylinder Sabre.

The E.122 was chosen, in January 1945, as the engine for the production version of the Blackburn Firecrest; however this was abandoned in October 1945 when it was found that the use of the Sabre would require the engine to located behind the pilot in order to offset the engines greater weight: this in turn added greater weight to the whole aircraft so orders for three E.122 Firecrests were cancelled. This left the E.122 without a platform and perhaps explains why it took until 1947 to actually build it.

 

[abaddon1]

With reference to Hawker Typhoon RB396 restoration to flight project...

The "Only surviving Combat Veteran" is not quite accurate.
The actual RB396 was serving with 174 Sqn when it was hit by flak and crash landed near Denekamp on Jan 1st, 1945.

The rear fuselage is actually the only segment of the proposed rebuild that is a genuine component part of RB396, and was recovered to the Twenthe Museum in the Netherlands where it was exhibited until the museum closed. It was taken on loan by the museum at Fort Veldhuis, also in the Netherlands; from where it eventually returned to the U.K.

The remainder of the "Only surviving Combat Veteran" is a heavily corroded hotch-potch of unidentified bits and pieces that bear no relationship to the original aircraft serial.

As for the much-publicised Napier Sabre IIa engine... (one of Napier's problem children, sharing this distinction with the Sabre I )... acquired from Cranfield University; it is believed to have only been used as a teaching aid, and is supposedly inhibited. As to whether this was performed correctly is another matter.

There are two fundamental issues with this project;

The first is that T50 tube has been unavailable since the early 1950s; and judging from the photo of the cockpit section... (see below)... a considerable amount of this will be needed to return the airframe to airworthy standards.

The second problem is getting the UK Civil Aviation Authority to sign off on the Sabre engine. This early version had a reputation for giving constant reliability problems which were not completely solved until the inception of the Sabre V.

 

[Deleted member 68059]

http://silverbiplanes.com/METALLUGRY_WEBPAGE_PDFS/Ref_02_Demon_B-BTVE.pdf

CAA Approval
"T50 replaced with premium selected T45 tube"
29th July 2009

As for the Sabre II - it was type tested, and so providing original drawings are available for any new parts (which they are) this is no more dangerous than any other warbird engine rebuild, which if done incorrectly will result in failure no matter what the wartime reliability was. I am sure it will be very tricky and involved - but not at all impossible. Naturally this is very ambitious, and only an idiot would say otherwise, but I believe it could be done.

 

[jetcal1]

The only question is how many AMU's? (Aviation Monetary Unit. 1 AMU = 1,000 GBP.)

 

[bobbychipping]

Hi, the attached shows the gear train arrangements

Also some YouTube videos



which show gear train in action

 

[AMCKen]

Yes. But the one and only historical record that has been circulating for many years is problematic. Sound level very quickly exceeds the capacity of the recording system, and what we hear is mostly saturation !

Just like I said in post #9.

 

[johnbr]

Napier Sabre VII: Napier 5000 BHP E124 aero engine net

 

[johnbr]

Sabre I, II & V Search Results for ""napier"" - VADS: the online resource for visual arts

Diagrammatic Layout of Hobson-RAE. Master Control Injector Type: NS2 & NS4

 

[Deleted member 68059]

Napier Sabre VII: Napier 5000 BHP E124 aero engine netView attachment 543902View attachment 543902

Your attached picture of the E124 is the Napier Nomad development engine.... not the Sabre, also the picture is copyrighted to the Institute of Mechanical Engineers, by posting copyrighted images to the forum without crediting their origin you are risking the forum`s future with these new (admittedly stupid) copyright laws.

Original below:

D Napier and Son, Nomad - IMECHE - VADS: the online resource for visual arts