Talk:Variable cycle engine

The contents of the Advanced technology engine page were merged into Variable cycle engine on 10 October 2024. For the contribution history and old versions of the redirected page, please see its history; for the discussion at that location, see its talk page.

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This article may be too technical for most readers to understand. Please help improve it to make it understandable to non-experts, without removing the technical details. (September 2010) (Learn how and when to remove this message)

Just a quick read through of this article shows that it selectively covers the field and has no citations... anyone willing to work on it a bit? - SidewinderX (talk) 15:34, 3 September 2009 (UTC)[reply]

Tandem Fan was conceived as a VTOL system, not as a way to augment thrust while lowering noise. The description even details the VTOL application, with the forward fan airstream exiting downwards and the aft fan then being fed by side intakes. — Preceding unsigned comment added by 94.191.190.114 (talk) 16:18, 23 February 2014 (UTC)[reply]

I was under the impression that a high speec supersonic jet needed high specific thrust because the jet exhaust has to be as close to the speed of the craft as possible for maximum efficiency. That's why turbojets are more efficient at high speeds, and less at low, because the exhaust velocity is wasting energy because it's much faster than the slow airspeeds when flying at subsonic. Likewise it is difficult to make a large-volume, slow speed jet create sufficient thrust at high speed because the exhaust is actually slower than the jet. Unless you want a very high volume of exhaust to make up for this defect, you need a high exhuast jet speed. The smaller cross section is an incidental benefit and doesn't really matter unless the larger fan forces the designer to thicken the wing, for example, or if the engines are pod mounted.

Idumea47b (talk) 02:45, 31 July 2020 (UTC)[reply]

These two articles cover much the same subject, although contents are currently quite distinct. Better to have one with everything. Lfstevens (talk) 23:44, 19 May 2024 (UTC)[reply]