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Aviation: Aircraft / Engines C‑class

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Aug 09 Work

I've started a sandbox here to start reworking this article. Please use this discussion page, or my discussion page, to make any suggestions you see fit. SidewinderX (talk) 18:09, 11 August 2009 (UTC)[reply]

If you can fill some early development content, that'll be great. I have only been to find more recent info on engine upgrades. -Fnlayson (talk) 03:07, 13 August 2009 (UTC)[reply]

Ok, I've updated the main page with my sandbox version. I've cited a lot more, added a lot of detail to the variants section, rewrote the development section some, and fixed the info box up a bit. I guess I'd like comments and any improvments anyone can offer, than have it checked against the B-class checklist. Fnlayson: I haven't been able to find too much on the early development process. I'll keep looking. - SidewinderX (talk) 00:04, 14 August 2009 (UTC)[reply]

Thanks. You're doing fine. I can probably pull some early info from my F/A-18 books. -Fnlayson (talk) 02:17, 14 August 2009 (UTC)[reply]

I got a bit motivated and found several good AvWeek articles from early in the F414 development years (1991-1995 mostly) that have a lot of good information. I'll try and synthesize that stuff and add it to the article tomorrowish. - SidewinderX (talk) 03:49, 14 August 2009 (UTC)[reply]

What are 'fluidic chevrons'?! Can we clarify this term for the readers (including me)?! Cheers Nimbus (Cumulus nimbus floats by) 16:56, 3 September 2009 (UTC)[reply]

Word repetition here: 'low risk derivative of the F404, rather than a riskier new engine', I'm trying to think of alternatives; completely new engine, bold new engine, unknown new engine etc.? Nimbus (Cumulus nimbus floats by) 17:52, 3 September 2009 (UTC)[reply]

"... rather than a new engine design" maybe add completely, clean sheet or other term in there. The fluidic chevrons is related to noise reduction. The mechanical chevrons are like the sawtooth edge on the nozzles of some newer airliner engines. This AIAA paper has some info on the mechanical features. -Fnlayson (talk) 18:06, 3 September 2009 (UTC)[reply]

WRT: Fluidic Chevrons: I added an extra line here, does that help explain them a bit? It's an advanced topic I know (and I haven't found a spot in Wikipedia that talks about it), but I figured it was worth mentioning at least. WRT: New engine: How about 'low risk derivative of the F404, rather than a more complex new engine'? I guess a new engine wouldn't have to be more complex, but it would require all new parts, tooling, and study... - SidewinderX (talk) 18:10, 3 September 2009 (UTC)[reply]

Are the 'chevrons' the exhaust nozzle petals? I still don't understand!!!! Nimbus (Cumulus nimbus floats by) 18:13, 3 September 2009 (UTC)[reply]

Mechanical chevrons are cut out tabs (http://www.nasa.gov/images/content/365835main_airplane_noise_qtd2_3024x2016.jpg) that help mix the hot fast air with cooler slower air to reduce jet noise. Fluidic chevrons work (or are supposed to work) by inducing that mixing with differential fluid flows. I included that info in the article to mention what is still being worked on for the engine... unfortunately wikipedia doesn't have a good link (that I've found) that discusses it to include. I think it's useful to have in there to show what is being done, but I understand the concern about it being an advanced technical topic. What do you think I should do? -SidewinderX (talk) 18:23, 3 September 2009 (UTC)[reply]

Revision as of 18:13, 3 September 2009 edit Nimbus227 (talk \| contribs) Autopatrolled, Extended confirmed users, New page reviewers, Pending changes reviewers, Rollbackers 53,861 edits →Aug 09 Work: Still stumped! ← Previous edit		Revision as of 18:23, 3 September 2009 edit undo SidewinderX (talk \| contribs) Pending changes reviewers 2,425 edits →Aug 09 Work: better explaination? Next edit →
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	::::::Are the 'chevrons' the exhaust nozzle petals? I still don't understand!!!! [[User:Nimbus227\|Nimbus]] [[User talk:Nimbus227\|<font style="color:#2F4F4F;">(Cumulus <font style="color:#708090;">nimbus <font style="color:#D3D3D3;">floats by)</font></font></font>]] 18:13, 3 September 2009 (UTC)		::::::Are the 'chevrons' the exhaust nozzle petals? I still don't understand!!!! [[User:Nimbus227\|Nimbus]] [[User talk:Nimbus227\|<font style="color:#2F4F4F;">(Cumulus <font style="color:#708090;">nimbus <font style="color:#D3D3D3;">floats by)</font></font></font>]] 18:13, 3 September 2009 (UTC)

			:::::::Mechanical chevrons are cut out tabs (http://www.nasa.gov/images/content/365835main_airplane_noise_qtd2_3024x2016.jpg) that help mix the hot fast air with cooler slower air to reduce jet noise. Fluidic chevrons work (or are supposed to work) by inducing that mixing with differential fluid flows. I included that info in the article to mention what is still being worked on for the engine... unfortunately wikipedia doesn't have a good link (that I've found) that discusses it to include. I think it's useful to have in there to show what is being done, but I understand the concern about it being an advanced technical topic. What do you think I should do? -[[User:SidewinderX\|SidewinderX]] ([[User talk:SidewinderX\|talk]]) 18:23, 3 September 2009 (UTC)