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Motor-glider talks at SSA convention in Reno
John Firth wrote, On 4/20/2014 5:19 AM:
At 02:29 19 April 2014, Eric Greenwell wrote: Dave Nadler wrote, On 4/17/2014 3:08 AM: On Wednesday, April 16, 2014 10:48:39 PM UTC-4, Eric Greenwell wrote: It's a decent presentation, but I do think "plummet mode" grossly exaggerates the situation: my ASH 26 E does not have a "plummet mode", As was discussed in the talk, had you bothered to attend... nor do similar gliders like the DG 800, Ventus self-launchers, etc. Wrong... ... I'd reserve the term "plummet mode" to sustainers that require diving to start the engine. If you had flown some of the planes I have, you would have a rather different opinion. The PIK20E with engine extended has a glide ratio no better than 10:1 at 50kts. I've read it's more like 15:1. Do you have a reference for the PIK20E glide angle? I don't remember such a bad glide angle on the one I flew a number of times. In any case, the 18 meter, buried engine self-launchers have a much higher "mast extended" L/D. -- 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 - "Transponders in Sailplanes - Feb/2010" also ADS-B, PCAS, Flarm http://tinyurl.com/yb3xywl |
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