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Purpose Of "daisy Petal"  
User currently offlineMrFord From Canada, joined Jan 2001, 143 posts, RR: 1
Posted (13 years 6 months 3 weeks 5 days 1 hour ago) and read 2742 times:

This maybe a basic question but I see on photos of very old turbojet-powered 707 and DC-8 what is called a "daisy petal" exhaust on engines.
What is the purpose of this device, because all of the turbofan-powered jetliners don't have these kind of exhaust ?
MrFord


"For radar identification throw your jumpseat rider out the window."
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User currently offlineVC-10 From United Kingdom, joined Oct 1999, 3701 posts, RR: 34
Reply 1, posted (13 years 6 months 3 weeks 5 days ago) and read 2697 times:
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They were a form of early noise supression to help mix the cold slower moving ambient air with the hot high speed jet exhaust.

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