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Post by jkarjanl on Sept 20, 2011 2:30:25 GMT -5
I would like to know what the cruise and top speed numbers are with the thick airfoil. I have to confess, that does not look like 45mph in the video. Is the airspeed properly calibrated. It is my first landing with Sonerai, used only flaps position 1. There was virtually no wind (notice the hot air balloon flying), I think speed was 110 km/h in final and under 100 km/h on start of the runway. Not so sure, I was pretty busy at the moment. Landing went well (as you can see), thankfully there is no video from my take-off... ;D -jkarjanl
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peterzabriskie
Junior Member
"Did I make that part the best I possibly could have?" Unknown
Posts: 99
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Post by peterzabriskie on Sept 20, 2011 9:58:17 GMT -5
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Post by Schmleff on Sept 20, 2011 10:27:02 GMT -5
cool video!
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hans
Full Member
Posts: 166
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Post by hans on Sept 20, 2011 12:52:49 GMT -5
check your messages for a PM...
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Post by n3480h on Sept 20, 2011 17:52:24 GMT -5
I agree, this is a very nice video. And your aerobatics are better than some I have seen. I plan to incorporate small hardpoints on my Sonerai to facilitate secure video camera mounting in several positions.
Apparently, our Finnish friends also know how to have fun. Your countryside is beautiful. Nice work, guys!
Tom Sonerai IILS under construction
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Post by paul57 on Sept 22, 2011 8:09:49 GMT -5
IT seems to me that using the ailerons for flaps could put alot of stress on the pins that engage the ailerons to the linkage (just outside the fuselage)
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4trade
Junior Member
Posts: 51
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Post by 4trade on Sept 22, 2011 8:33:48 GMT -5
Those ones are AN 4 bolt. Check AN 4 bolt stress failure levels, it will be more than enough...
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toma
New Member
Posts: 7
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Post by toma on Sept 24, 2011 16:04:15 GMT -5
I agree, this is a very nice video. And your aerobatics are better than some I have seen. I plan to incorporate small hardpoints on my Sonerai to facilitate secure video camera mounting in several positions. Apparently, our Finnish friends also know how to have fun. Your countryside is beautiful. Nice work, guys! Tom Sonerai IILS under construction You're all too kind my dear namesake, i promise to work on the aerobatics now when we have a machine where it is enjoyable to do ;D And yes, we do know to have fun even though we seem to have a funny reputation out in the world of being tongue-tied and introvert. We're also working on correcting that. We also strive to improve the camera mounts, even though duct tape does work surprisingly well, as long as you remove it quite quickly afterwards. Fortunate for us one of the owners have a sheet metal workshop so I'm eager to see what he has made up in that regards, will let you know our "design" as soon as we have one that works, hope you'll do the same. It seems like it will be a good flying day tomorrow, lets see if we get some footage that is good enough to put on the tube. Bought an additional camera so I don't have to fake it like I did in the video (it was actually 2 different flights) What cameras are you using by the way? We all now have the Contour HD 1080p in use. It was on sale here in Finland for 195€ which translates, in my opinion, to a fairly decent price/quality ratio. Cheers Tom
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toma
New Member
Posts: 7
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Post by toma on Sept 24, 2011 16:14:25 GMT -5
Just wondered. My airspeed is calibrated but the airspeed drops to 0 before it stalls. HI Scmleff, Where do you have your pitot tube and the static pressure holes? It seems strange that the speed would go to zero. On one of my other ultralights which is a Sky Ranger the angle of attack is horrendous when slow flying e.g. with a little power but the airspeed still shows fairly reliable readings. On our Sonerai the pitot tube is close to the wingtip under the wing. It seem to show rather good readings all the way to the stall when cross referencing with the GPS in calm weather like we had during our last flying. Cheers Tom
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ncam
New Member
Posts: 4
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Post by ncam on Dec 4, 2011 3:30:31 GMT -5
Old folks like me will recall the Hirth Acro, which had a flapomatic system where pulling the stick back drooped the ailerons as well as raising the elevator. I gather it had interesting problems on a go around! It would work OK if you never changed your mind. and it would be easy to build. Regards Neville
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hans
Full Member
Posts: 166
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Post by hans on Dec 14, 2011 3:35:34 GMT -5
Please note the Subaru engined Sonerai-II currently on Barnstormers, that apparently also is equipped with flaperons. The flaperon reflexor/actuation seems to be mounted directly behind the main spar, so I wonder what the rest of this actuation would look like... (also note the aux. tank on the front seat and the fuel pump below...) Hans
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Post by skywarrior771 on Dec 31, 2011 12:16:05 GMT -5
The Suberai on barnstormers is no longer for sale, I have managed to sell my Cessna, so I am keeping the Subie and the Teenie two. I think I will stay in the experimental category for the rest of my personal aviation career. The flapper on reflexor doesn't move the flaps very much, about 4 degrees up or down only. It was a system to change the center of pressure on the wing in order to trim the airplane similar to the way the flaperons work on the challenger. I just finished ducting in the radiator, have built a small frontal area pressure box and the airplane has gained a marked increase in performance. I also added a heater, since I moved to Michigan and would like to fly year round still. The heater uses the coolant system to a core and blower located under the front tank. So far so good. Lifr here today so I still am waiting for some weather to thoroughly test it.
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