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#1
September 27th 19, 01:40 AM
posted to rec.aviation.soaring
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gel coat
How many wing failures have composite gliders had over the years?
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#2
September 27th 19, 08:01 PM
posted to rec.aviation.soaring
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gel coat
Excellent Question
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#3
September 27th 19, 09:32 PM
posted to rec.aviation.soaring
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gel coat
I have a 1988 AS-W20 that had modifications done (tailwheel fairing, Canopy refit) that required recoating with Prestec. They are essentially perfect today. No crazing or yellowing.
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#4
September 27th 19, 10:58 PM
posted to rec.aviation.soaring
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gel coat
On Thursday, September 26, 2019 at 8:40:34 PM UTC-4, Charles Longley wrote:
How many wing failures have composite gliders had over the years? Exactly.
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#5
September 28th 19, 12:16 AM
posted to rec.aviation.soaring
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gel coat
On Thursday, September 26, 2019 at 8:40:34 PM UTC-4, Charles Longley wrote:
How many wing failures have composite gliders had over the years? A fair number, but I can't think of any that were due to normal flight. For example, at least 1 or 2 Slingsby Vegas came apart, but I believe both of those were due to exceeding design limits. Same for a Zuni. A fair number of others came apart due to flutter. P3
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#6
September 28th 19, 01:02 AM
posted to rec.aviation.soaring
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gel coat
On Friday, September 27, 2019 at 7:16:17 PM UTC-4, Papa3 wrote:
On Thursday, September 26, 2019 at 8:40:34 PM UTC-4, Charles Longley wrote: How many wing failures have composite gliders had over the years? A fair number, but I can't think of any that were due to normal flight. For example, at least 1 or 2 Slingsby Vegas came apart, but I believe both of those were due to exceeding design limits. Same for a Zuni. A fair number of others came apart due to flutter. P3 A control surface that has been compromised(easy to do given light structure) could lead to flutter due to reduced stiffness and you could lose a ship.. Glider structures are over built in some places for durability, but not everywhere. UH
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#7
October 20th 19, 01:09 AM
posted to rec.aviation.soaring
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gel coat
On Friday, September 27, 2019 at 4:16:17 PM UTC-7, Papa3 wrote:
On Thursday, September 26, 2019 at 8:40:34 PM UTC-4, Charles Longley wrote: How many wing failures have composite gliders had over the years? A fair number, but I can't think of any that were due to normal flight. For example, at least 1 or 2 Slingsby Vegas came apart, but I believe both of those were due to exceeding design limits. Same for a Zuni. A fair number of others came apart due to flutter. P3 P3 - I was the owner of one of the Vegas that crashed (N4312B, in 1987 in Hemet) - the root cause was elevator flutter resulting in failure of the elevator linkage. No overspeed, no structural failure, just flutter followed by loss of pitch control causing the pilot to bail out (unfortunately at low altitude, with serious injuries). Cheers, Barry
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