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So any news about the low-noise propellers for the spark?
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<blockquote data-quote="cozzykim" data-source="post: 37813" data-attributes="member: 6499"><p>Hmm, maybe, tilted up winglets not so much.</p><p></p><p>Winglets also reduce drag though, so maybe that would offset any downwash shadow.</p><p></p><p>You point about downwash shadow is good though, as the shadow is mostly at the end of the prop's radius. This suggests that a fixed prop with less drag and more lift from a fixed blade might be better, by adding lift where it's needed where its effect isn't wasted by the downwash shadow.</p><p></p><p>It's interesting stuff to think about anyway. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite6" alt=":cool:" title="Cool :cool:" loading="lazy" data-shortname=":cool:" /></p></blockquote><p></p>
[QUOTE="cozzykim, post: 37813, member: 6499"] Hmm, maybe, tilted up winglets not so much. Winglets also reduce drag though, so maybe that would offset any downwash shadow. You point about downwash shadow is good though, as the shadow is mostly at the end of the prop's radius. This suggests that a fixed prop with less drag and more lift from a fixed blade might be better, by adding lift where it's needed where its effect isn't wasted by the downwash shadow. It's interesting stuff to think about anyway. :cool: [/QUOTE]
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So any news about the low-noise propellers for the spark?