When will one show at Dockweiler?

Honoring the rich history and bright future of gliding at Dockweiler Beach

Re: When will one show at Dockweiler?

Postby Frank Colver » Mon Aug 24, 2015 11:06 pm

When will a Miller (Richard) diffuser tip glider show at Dockweiler?

What was the theory behind the diffuser tip? How was this nearly straight wing pitch stable? Note the dual triangle bar. Safe splat?

This looks like a good candidate for a 5' packed HG. However, I don't think weight shift would do much for turning since it's a rigid wing.

Location: Vineyard Rd. "water tank hill", San Marcos, CA

Frank Colver

Miller diffuser tip HG.jpg
Miller diffuser tip HG.jpg (292.46 KiB) Viewed 2367 times


Diffuser Tip wing in flight.jpg
Diffuser Tip wing in flight.jpg (203.34 KiB) Viewed 2367 times


I only saw it at the hill once and that may have been the only time it was flown.
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Re: When will one show at Dockweiler?

Postby SamKellner » Tue Aug 25, 2015 12:23 am

Frank,

Thanks for posting this history.

:wave:
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Re: When will one show at Dockweiler?

Postby brianscharp » Wed Aug 26, 2015 8:40 am

Bob Trampenau's SUNSEED
Image
Image
Image
http://seedwings.com/index.php?option=c ... &Itemid=64
The Sunseed flying wing

Rigid wing hang gliders are a bridge in the gap between sailplanes and flex wing hang gliders. The original Sunseed weighed only 55 pounds and might not have passed HGMA airworthiness loads tests today, but the third prototype however was noticeably stronger than the first prototype flown. A rigid wing with a king post and wires is the least expensive, lightest weight just like that of king posted flex wings. The current market for rigid wings however, is predominated by topless and cantilevered configurations where as the market for flex wings utilizes both. The Sunseed was from an era where king posted rigid wings were popular mainly because flex wing performance was less at that time and it was seen as a means to higher performance. Even though estimating the Sunseed's glide ratio at 14 to 1, it was easy to see in the mid-70s that flex wing development would surpass the performance of king posted rigid wings with all those tubes and wires.
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Re: When will one show at Dockweiler?

Postby Frank Colver » Wed Aug 26, 2015 11:57 am

As I recall, Bob Trampenau assisted Miller with the diffuser tip wing. I actually think that is Bob flying it in my photo but I didn't say so because I'm not sure.

I remember that Bob and I were flying that hill on the same day, at least once, maybe more, so that very well may have been that day. Richard would always let me know when he knew that a HG flyer, from another area, was coming to visit him and go to that hill.

Here are a couple of photos taken from that hill. One on the same day as the diffuser tip wing photos (nov '76) and the other in Feb 2012. :(

Frank

Vineyard Rd Hill flying Nov -76 R.jpg
Vineyard Rd Hill flying Nov -76 R.jpg (304.37 KiB) Viewed 2339 times


Vineyard Rd hill Feb - 12 R.jpg
Vineyard Rd hill Feb - 12 R.jpg (397.51 KiB) Viewed 2339 times
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Re: When will one show at Dockweiler?

Postby brianscharp » Thu Aug 27, 2015 9:06 am

Nice photos Frank, and a cool looking wing. Thanks for the story behind them.
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Re: When will one show at Dockweiler?

Postby Bill Cummings » Thu Aug 27, 2015 8:35 pm

Just like the north side bench on POM UT
H-6 RLF.JPG
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Re: When will one show at Dockweiler?

Postby Bob Kuczewski » Thu Aug 27, 2015 9:21 pm

H-6 RLF          :srofl: :srofl: :srofl: :srofl: :srofl: :srofl: :srofl: :srofl: :srofl: :srofl:

Can we reduce that to an H-5.9 RLF if the garage door is open?      ;)
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Re: When will one show at Dockweiler?

Postby Bill Cummings » Thu Aug 27, 2015 10:12 pm

Only if both cars are gone.
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Re: When will one show at Dockweiler?

Postby JoeF » Mon Jan 18, 2016 8:59 pm


Something close to this will probably show at Dockweiler
some day ...
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Re: When will one show at Dockweiler?

Postby JoeF » Mon Jan 18, 2016 9:39 pm


Something close to this will probably show at Dockweiler
some day ...
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