Talk:Power Jets W.2

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W2/500[edit]

Hooker in 'Not much of an engineer' mentions the W2/500, but I can't find it now.

In Appendix I he lists the relationship of many RR & Whittle engines & says "Derwent II introduced Whittle's W2/700 impeller casing ..." GilesW (talk) 15:22, 15 October 2009 (UTC)[reply]

A book that I need to get hold of soon! Thanks! I still don't know what the 500/700/850 stands for?! Cheers Nimbus (Cumulus nimbus floats by) 17:15, 15 October 2009 (UTC)[reply]

Two editions of Hooker's book are available. I have the first edition, hardback. The second edition might have some worthwhile revisions. It seems to be available only in paperback. Both editions available via Amazon last time I looked, or your lending library should be able to order it for you. Incidentally he does mention in passing the relationship of the /500 & /700 to RR engines. Will attend to that when I have time. GilesW (talk) 18:13, 22 October 2009 (UTC)[reply]

"I still don't know what the 500/700/850 stands for? - I'm not sure on this but I have a feeling the numbers refer to the turbine diameter in millimetres. — Preceding unsigned comment added by 95.149.55.6 (talk) 16:48, 16 April 2016 (UTC)[reply]

Sfc error[edit]

In the 'Specifications' for the W2/850 the thrust is quoted as 2485 lbsf and the fuel flow as 2610 lbm/hr. These values are not consistent with the quoted sfc of 0.4 lb/hr/lb. (If the W2/850 was a turbojet of pressure ratio 4:1, as stated, the sfc could not have been anywhere near 0.4).

What is reference 4 - Jane's, 1989? Not the big year-book, surely? — Preceding unsigned comment added by 86.152.112.92 (talk) 12:39, 18 October 2012 (UTC)[reply]

Reference 4 , Jane's Fighting Aircraft of World War II, does not have an sfc value for the W2/850 86.139.50.168 (talk) 00:02, 16 September 2013 (UTC)[reply]