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Old Aug 28, 2003, 01:42 PM
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byrocat's Avatar
Aurora, Ontario, Canada
Joined Mar 2002
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Flat plate jet wanna-be's

Just a bit off-topic, but someone out there should remember seeing this article in one of the hobby magazines (FM, RCM, MAN, MAC)...

I've been digging through my files of old magazine articles (future projects or ideas), looking for an article about making electric pusher aircraft using flat plates of balsa or foam-core to create them. I did come across one note on a similar concept that said that it may have been published in Flying Models.

I can almost visualize the article (about two pages with a plan). The fuselage is a open rectangle structure with the batteries, radio, servoes and motor in fore-aft sequence, with a profile nose and the wings located on the top of the fuselage. The motors were Speed 400's.

The reason that it does stick in my mind is that one of the models is an Avro Arrow (being a Canadian modeller) as well as a Gloster Javelin and I think a F-15 Eagle.

Thanks in advance!
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Old Aug 28, 2003, 01:50 PM
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bipeflyer's Avatar
England
Joined Feb 2001
4,021 Posts
My Buccaneer pusher has a flat plate wing,and works surprisingly well.(surprised me!)
There is a video to dowload if you want to see it.They seem to work great.Nigel Hawes Hunter and BAe Hawk has a flat plate section too.

Sorry I can't help with the article though.

Matt
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Old Aug 28, 2003, 03:48 PM
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monkamarm2000's Avatar
NorCal Silicon Valley
Joined Aug 2002
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I can tell you one of the planes and the model though. It's the electric arrow 400 pusher. It's a Delta plate wing pusher, cheap easy to build, flat out hauls-*** and heres a link to the site who sells it.

www.soy.on.ca/arrow.html


Barry
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Old Aug 28, 2003, 03:49 PM
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NorCal Silicon Valley
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And Matt is nigel done with doing hunters?

Barry
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Old Aug 28, 2003, 04:36 PM
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PunkerTFC's Avatar
Iraq
Joined Feb 2001
840 Posts
funny you mention that, I just finished an F3 version of a mirage (supposed to be a 2000 ) and it looks really cool, but I haven't flown it yet.
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Old Aug 28, 2003, 04:45 PM
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NorCal Silicon Valley
Joined Aug 2002
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share the pics! I love Mirages, can't ever see enough of them. and I always wanted to try that electric arrow as a bottom winger like a mirage. My next little pusher Mirage definatly gets a plate wing.

Barry
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Old Aug 28, 2003, 04:57 PM
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bipeflyer's Avatar
England
Joined Feb 2001
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Not sure Barry...the Hunter was a free plan in RCM&E a while back,seemed to be a popular model,mainly,I guess,because of it's simplicity.
Nigel advocates the use of a 1/4" thick sheet wing,I used 3/16" on the Bucc,seems to work ok though.

Matt

Just remembered,there was a guy called Alex Weiss who designed quite a few all sheet semi scale ic prop jets in the mid '80's,and there was some discission regarding the efficiencies of these plate wings.
He must have been onto something,as he designed F-15,SEPECAT Jaguar,and some others I can't remember,he stuck with the formula.

Those thin section wings are very fast though
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Old Aug 28, 2003, 05:56 PM
EDF rules... :)
AirX's Avatar
Joined Nov 1999
13,592 Posts
Hi Guys,

Why not put a leading edge that is controlled by a servo like flaps, droop the leading edge on the fly mix in some elevator to counter the angle of attack change and voila a cambered wing.

Cheers,

Eric B.
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Old Aug 28, 2003, 08:16 PM
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Alberta, Canada
Joined Sep 2001
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Has anyone flown the arrow? I have that kit sitting around here somewhere
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Old Aug 29, 2003, 03:31 AM
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monkamarm2000's Avatar
NorCal Silicon Valley
Joined Aug 2002
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I have one and it's a rocket. I actually like it best on a 480 BB with KR 1400 nicads. It's light, cheap, and darn fast. That was the first truly wicked fast plane I ever owned and the first time I flew it in my local small school yard I almost had a hart attack cause I was not ready for it. It was either fly it at 200 feet and not see it occasionally behind some trees. Or start trying to circle it down into the pocket I was flying in now before the battery runs out! Took me about 1 minutes to get it into the pocket where I landed it in the middle of a pine tree, and was more than happy to take that. Gotta understand, this was right after flying a stock Wattage Mirage, it was fun in hind sight though. I dropped to my knees pale faced and my buddy dropped to the ground laughing. And come to think of it this plane gave me grief yet again later. First time I flew it with BL I was doing a fast hard knife edge when the prop flew off and the plane yanked the opposite way right into a small forest. took 2 days( not straight ofcourse) to find it.

Barry
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Old Aug 29, 2003, 09:23 AM
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Landkey, Devon, England.
Joined Jul 2003
826 Posts
Hi guys

I,ve used flat plate successfully four times now, once with Nigels Hawk and on my own designs Spit, A7 Corsair and MB339.

(By the way for anyone who so my 339 fly, or should I say stagger around the sky at Woodspring electric, the problem turned out to be a faulty pack which was like flying on 6 cells instead of 8.)

Flat plate wings are not efficient and as Matt says they operate best at speed. If you want real good low speed handling in a model then stay away from them, but in the small faster types like pusher jets they work fine.

I thought I was taking a chance using flat plate on my Spit but it goes really well at all speeds.

Cheers
Ron

ps The Buccaneer looks great Matt.
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Old Aug 29, 2003, 03:27 PM
Registered User
Stockport, UK
Joined Sep 2001
458 Posts
Flat Plate

Hey Ron

Any chance we will see your MB339 in Q&EFI? Your A7 is in the pile of plans I MUST build honest guv!

I've used a flat plat on my Kwite Kwik Pike class 400 racer and really am quite impressed, and surprised. It is quite quick on seven cells and a 6v motor, even hauling 184 sqin of wing around. Handling is very benign and the glide is good so I'm definitiely thinking of doing some more flat plate designs. Maybe the Hawes Hawk and oh yes the A7

Cheers

Ian
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Old Aug 29, 2003, 05:29 PM
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byrocat's Avatar
Aurora, Ontario, Canada
Joined Mar 2002
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Arrow flat plate

There's a kit kicking around A&J's in Unionville for some time. I'll take a look at it.

I did find a photocopy of the FM plans -- 2001(C) on the plans. Anyone want to take a quick look in their FM collection for "Flat Plate Tecktonics".

Thanks...

Object for this weekend -- fly the hatch=eeee-two-hockeysticks out of my P-51 Fun scale fighter. Summer's over and I ahven't done more than chuck it around the field a couple times.
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Old Aug 29, 2003, 06:23 PM
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AIR MOVER's Avatar
TEXAS
Joined Jun 2001
3,044 Posts
I use solid sheet balsa all the time for wings.. just sand out a high speed airfoil doesnt take long by hand.. the plus is a thin airfoil for high speed aplications .. I have used the gws50 fan with the larger wing and it flew fast . thats what I was looking for.
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Old Aug 29, 2003, 06:29 PM
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Kevin Cox's Avatar
St. Louis Intl, Missouri, United States
Joined Jan 1997
6,809 Posts
This is an interesting thread as had planned on using a type of plate on my MiG-25.
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