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#11
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Looking for pictures of motorglider failures
I remember an engine that would not extend caused by a spark plug wire stuck to the muffler! Apparently the engine had been retracted without a sufficient cooling period and spark plug wire came to rest on the muffler and melted the insulation that turned to glue when it cooled down! Oddball malfunction for sure. Also heard rumors about pilots forgetting to add oil to the fuel in 2 stroke engines and another guy that accidentally added oil twice to the same batch of fuel. Then there was the pilot that leaned out his engine for peak power and melted a cylinder on takeoff. Seems to me that electric motors are the best way forward, but self launching with a motor in the nose gives very little prop clearance. The JETA looks promising.
JJ |
#12
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Looking for pictures of motorglider failures
Dan Marotta wrote on 12/8/2019 9:38 AM:
HERE https://www.youtube.com/watch?v=Puia_yQxir8&feature=youtu.be is an example of a jet sustainer failure to start.* Good glide path control, but I thought he may have waited a bit longer than required before dumping his ballast. On 12/8/2019 9:59 AM, Dave Nadler wrote: On Sunday, December 8, 2019 at 11:46:36 AM UTC-5, kinsell wrote: No one has mentioned jets? They can be unreliable to get started, and there's been uncontained blade failures. Even had the engine depart the A/C. Interesting, I've heard of numerous failures to start and failure to climb, but not uncontained blade failures or engine departing AC... I'm pretty sure that qualifies as a self-launcher! -- Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me) - "A Guide to Self-Launching Sailplane Operation" https://sites.google.com/site/motorg...ad-the-guide-1 |
#13
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Looking for pictures of motorglider failures
Motor in a sailplane = a complicated abomination, ......
An efficient light power plane utilizing sailplane aerodynamics = beautiful engineering.,,,, |
#15
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Looking for pictures of motorglider failures
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 |
#16
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Looking for pictures of motorglider failures
\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 |
#17
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Looking for pictures of motorglider failures
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 |
#18
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Looking for pictures of motorglider failures
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 |
#19
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Looking for pictures of motorglider failures
Not part of the accident report, but here are some additional photos of the hub failure accident mentioned. Kudos to the BGA and their mag for better coverage of such events and remedies. I believe this is the same one regarding the G-SAXT Duo? http://glidingtauranga.co.nz/wordpre...-Engine-DI.pdf |
#20
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Looking for pictures of motorglider failures
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. |
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