Author Topic: DYNAMIC SOARING (Read 17779 times)

Brian · « **on:** November 10, 2008, 16:12:09 PM »

Hi all,
Anyone doing any of this DS thing.
Does anyone fancy a 'trip' to the 'dark side' of slope soaring.
Where are the good places.

Brian

Fred · « **Reply #1 on:** November 10, 2008, 16:28:05 PM »

Hi Brian,

Tried once a while ago... Not a fan of that sort of flying. But I saw some French guys doing it at a much higher level, and I have to admit that is impressive to watch ! Just the sound of the glider, it's mad ! No videos can be justice to that ! The downside, was a lot of broken fibreglass at the end of the session !

In Ireland, Mount Leinster would be a good place to start with !
On a westerly wind, going up 9 stones and fly the backside here...
Worth a try one of these days, out of curiosity :?:

joe · « **Reply #2 on:** November 10, 2008, 16:28:36 PM »

Don't know of any good places close by.
I've done it a little by the coast at Blackwater. This is not a DS spot. The back of the cliff falls away ever so slightly. You can really see it working when you do a few circuits. Even get that nice DS swwwwish. I only do this with a foam wing as there is very little space and you are flying about 2 metres from the ground to get the best acceleration.

Would like to try it a bit more. Defiantly gets the heart rate going. Although at Blackwater it is as much the challenge of not hitting the ground.

May be possible at Mt leinster with a north or south wind. Tried it once or twice with no great luck but could do with a bit more research!

Fred · « **Reply #3 on:** November 10, 2008, 16:33:03 PM »

Same time !

But I reckon 9 stones, on a East or West wind should do it... :?:

joe · « **Reply #4 on:** November 10, 2008, 16:52:05 PM »

East, west

You are confusing me now!!
On the southside of Mt Leinster in a north wind or on the northside in a south or south-west. They would be the backsides

Brian · « **Reply #5 on:** November 10, 2008, 17:59:50 PM »

Hi all,
Apparently whats needed is steep up little no or flat or round top and steep back down.
Not for your vintage models Fred !!!!!
It's a must do for the future.

joe · « **Reply #6 on:** November 10, 2008, 18:32:52 PM »

Yeah a good steep backside to the slope is what is needed. See the diagram below.
Here is a panaroma of Parker Mountain where Joe Wurts explored and mastered DSing while bringing it to the attention of the RC glider world. It was a know phenomenon before but, I don't think it had been used/explored in the RC world before Joe Wurts http://www.withinc.com/~wwang/Soaring/pkmtn2.htm

Fred · « **Reply #7 on:** November 10, 2008, 19:51:08 PM »

Quote from: "Brian"

Not for your vintage models Fred !!!!!

God no ! 2 turns, and they explode !

On a second tought, that can be quiet funny to watch !

Alright, I'll find a map for Mt Leinster, but definitively some suitable/good DS point on top of nine stones ! I've walked all the way a while ago, must find the photos I took that day !
I'll get the wing and the destiny ready next time... If we are not too lazy to walk up the hill that day, we'll have a go !

Brian · « **Reply #8 on:** November 10, 2008, 20:24:51 PM »

Hi Guys,
Not to set too high a standard but the current speed record is 365 MPH FOR DS'ing.
From what I can see the guys with the radar guns miss the really fast passes very often.
I have to say there is some MAD stuff on utube.
I think I'll dig out the old phase 6 for this and see if I can learn how.
Fred a south west wind at the nine stones is probably the best up there, but we'll have to find out.

Brian

joe · « **Reply #9 on:** November 10, 2008, 22:09:06 PM »

Yeah! I think you defiantly need something that can pull a few Gs. Things get fast very quickly if the site is working well I would imagine. Plus you need to be smooth. Next time I'm up there I will spend a bit of time trying it out!
I think my Luna can handle some light DSing.
There are a shitload of DS videos on youtube. They get boring fairly quickly but don't think that would be the case with a tranny in your hand (one for you there Keith

)

356MPH might be a lot to ask. Apparently they need to have a special radar gun for this as the standard one is too slow. Maybe we should set a goal of 100MPH for ourselves??!!

Brian · « **Reply #10 on:** November 10, 2008, 22:28:43 PM »

Hi Joe,
I think I'd be happy if I got it to come back up that hill into wind :shock:

Brian

joe · « **Reply #11 on:** November 10, 2008, 22:34:31 PM »

yeah there is that alright!! :lol: :lol:

Alan_Perse · « **Reply #12 on:** November 11, 2008, 13:49:55 PM »

I certain think the north/south slope (up the hill from the car park) of Mt Leinster could be the slope to do it. But I'm not sure. There certinaly is a lot of turbulance behind the slope in a strong wind. May be a light to moderate wind would be the best to test it.

Brian · « **Reply #13 on:** November 15, 2008, 11:46:48 AM »

Hi Alan,
Keith and I were up there yesterday and we had a look.
There are two rockey outcrops that have the effect of making the front and back slopes meet at a point,while the rest of the hill crest is rounded off.From what I have read these two places look good.
We will have to see.
Keith just for you ; www.stanford.edu/~mberry/Papers/Davies_290_DS_boslough.pdf

Brian

Brian · « **Reply #14 on:** December 17, 2008, 20:16:29 PM »

Hi all,
Anyone fancy a trip to Mt Leinster on Sunday.
Wind looks good for the south slope and the direction is good for a trip to the dark side. :evil:
Who has the liathroidi to take that first plunge. :shock:

Brian

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