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#1
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Motor in a sailplane = a complicated abomination, ......
An efficient light power plane utilizing sailplane aerodynamics = beautiful engineering.,,,, |
#3
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At 18:47 08 December 2019, Eric Greenwell wrote:
Some where there is a photo of a propellor blade sticking out of a duo discus wing.It was part of the AD sent out after a hub failure left the blades coming off. wrote on 12/8/2019 10:01 AM: Motor in a sailplane = a complicated abomination, ...... An efficient light power plane utilizing sailplane aerodynamics = beautiful engineering.,,,, Look at an FES sailplane - simple. Much simpler than a towplane, and much easier to schedule when you need a launch. I was part owner of a towplane for years, and it caused me more grief each year than the self-launcher I now own. And then there are the avoided retrieves - simple and priceless! Are we really having this conversation after all these years, with 80% of the gliders going out the factory door with an engine? -- Eric Greenwell - Washington State, USA (change ".netto" to ".us" to me) - "A Guide to Self-Launching Sailplane Operation" https://sites.google.com/site/motorg...ions/download- the-guide-1 |
#4
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![]() \J. May: Some where there is a photo of a propellor blade sticking out of a duo discus wing.It was part of the AD sent out after a hub failure left the blades coming off. I think this may be what you're referring to? https://assets.publishing.service.go...SAXT_05-16.pdf |
#5
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At 19:51 08 December 2019, Duster wrote:
\J. May: Some where there is a photo of a propellor blade sticking out of a duo discus wing.It was part of the AD sent out after a hub failure left the blades coming off. I think this may be what you're referring to? https://assets.publishing.service.go...14f22aed915d16 01000000/Schempp-Hirth_Duo_Discus_T_G-SAXT_05-16.pdf Thats the incident butI have see more photos one was of a blade impacted with a wing still I insintue |
#6
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On Sunday, December 8, 2019 at 2:15:07 PM UTC-5, Jonathon May wrote:
At 18:47 08 December 2019, Eric Greenwell wrote: Some where there is a photo of a propellor blade sticking out of a duo discus wing.It was part of the AD sent out after a hub failure left the blades coming off. IIRC, more recent is the blade sticking out of a DG-1000 wing. Different style hub (conventional 2-blade prop). Anyone have that picture? |
#7
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On Sunday, December 8, 2019 at 1:47:26 PM UTC-5, Eric Greenwell wrote:
Are we really having this conversation after all these years, with 80% of the gliders going out the factory door with an engine? That is PRECISELY why we're having this conversation. Looking forward to your contributions, Best Regards, Dave PS: Old, but still relevant (I need to see if Jean Marie has an updated version): http://www.streckenflug.at/download/motorprobleme.pdf |
#8
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At 20:06 08 December 2019, Dave Nadler wrote:
On Sunday, December 8, 2019 at 1:47:26 PM UTC-5, Eric Greenwell wrote: Are we really having this conversation after all these years, with 80% of the gliders going out the factory door with an engine? That is PRECISELY why we're having this conversation. Looking forward to your contributions, Best Regards, Dave PS: Old, but still relevant (I need to see if Jean Marie has an updated version): http://www.streckenflug.at/download/motorprobleme.pdf Prop blade punctured fuselage, dented fuel tank and restricted aileron movement. It nearly took out the brakes as well. The prop had flown 38 hours Missing blade The flight manual says to check for cracks in the hub every day. This is what a very badly cracked hub looks like. There are photos I will try to put a link in. |
#9
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On Sunday, December 8, 2019 at 12:01:48 PM UTC-6, wrote:
Motor in a sailplane = a complicated abomination, ...... An efficient light power plane utilizing sailplane aerodynamics = beautiful engineering.,,,, As the Italians put it: Donna e moto amore e dolore... |
#10
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On Sunday, December 8, 2019 at 3:38:04 PM UTC-6, Tom BravoMike wrote:
On Sunday, December 8, 2019 at 12:01:48 PM UTC-6, wrote: Motor in a sailplane = a complicated abomination, ...... An efficient light power plane utilizing sailplane aerodynamics = beautiful engineering.,,,, As the Italians put it: Donna e moto amore e dolore... Well, for one, my spouse has never failed me (and she's prettier than any Rotax, Solo or FES engine). |
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