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Purpose Of "daisy Petal"  
User currently offlineMrFord From Canada, joined Jan 2001, 145 posts, RR: 1
Posted (15 years 3 months 6 days 23 hours ago) and read 3703 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 ?

"For radar identification throw your jumpseat rider out the window."
1 replies: All unread, jump to last
User currently offlineVC-10 From United Kingdom, joined Oct 1999, 3727 posts, RR: 32
Reply 1, posted (15 years 3 months 6 days 22 hours ago) and read 3658 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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