|May 06, 2007, 12:29 PM|
The REVERT fastest build flat sloper wing (plank)
The REVERT concept wing was inpsired by the "Kline-Fogelman Airfoiled Flying Wing" thread started by Tony65x55. Here is the link;
Special props to Viking60 for his heat smashing the LE concept.
See his site at;
This is the simplest sloper I have built yet! It's fun and vary acrobatic. Plans will be up shortly.
MATERIAL: Fan Fold Blue foam or Depron (6mm)
NOSE: 4.5" from LE to tip
WEIGHT: about 4.5 oz
BATTERY: 150mah NIMH
SERVOS: (2) Dymond D47 (4.7gr)
NOSE WEIGHT ADDED: 1/2oz to nose
CG: 1.25" from LE
REFLEX: about 1 degree (if any)
ELEVATOR THROWS: about 12-15% (of total throw)
AILERON THROWS: about 30% (of total throw)
First one of the three original Revert Videos found and uploaded.
I guess I didn't edit in any sound. Sorry about that.
|May 06, 2007, 12:34 PM|
The REVERT video
Here is a quick video of the REVERT. Fan fold foam sliced up on Friday night in 20 minutes, electronics installed in 10 minutes Saturday morning, and test flown. This is the maiden flight;
Hope you enjoy!
|May 06, 2007, 12:40 PM|
Wow, nice job. Amazing agility. Great flight characteristics. Simple, simple.
Gotta know more. Keep it coming.
Thanks for sharing.
|May 06, 2007, 01:27 PM|
Thanks Twisted Sheets! It is that never ending pursuit for simplicity. So far this concept is looking good. If I would have known it would work so well, I would have dressed it up a bit, LOL!
I just received an email from Dick Kline, the inventor of this airfoil design. Here is what he said, hope you don't mind Dick;
I was very impressed with your KF Sloper!
I am the inventor of the Kline-Fogleman airfoil
and it has taken me only forty years for people to
accept the capabilities of this airfoil. It changes
all the rules of aerodynamics and its hard for
people to accept that.
The KF Sloper looks very agile indeed.
Also, there was no dihedral. I couldn't get over
how close you flew to the ocean, but it seemed
to handle with ease. Just like a bird.
It seems to cut through the air extremely well
and it looks like you have total control over it.
I SALUTE YOU!!! Thanks for making my day.
|May 06, 2007, 01:56 PM|
Troy,as soon as you post the plans,I'm going to make a few of these for some park fun for my friend and I. Of course we need motors I think but If the wind is up maybe not. Can't wait to try it out!
|May 06, 2007, 02:15 PM|
Fantastic and simple. I have no slopes here in the flat lands of Nebraska so I would need a powered version... Upcoming? Now you know they fly so well it is time to dress them up with some rad graphics!
|May 06, 2007, 09:14 PM|
OK - here is the plan sheet. It is a .pdf file and is to scale. Sheet size is 40'wide x 36" tall. I will try and "tile" the plan as soon as I figure out how
This planform can be powered with ease off of the nose. Adjust the battery for balance. This plane wouldn't need much more than a 370 or 100watts to scream. I am running the NEW Eflite 250 on another wing and it rips.
All the best and thanks for trying this thing,
|May 09, 2007, 01:04 PM|
Troy. The Revert looks like a winner,but.... check your carbon tube spar diameter do you rearlly mean 2.25 " ? Should the flat carbon spar be vertical .Is the spar "let" into the lower wing surface
|May 10, 2007, 03:02 AM|
|May 10, 2007, 03:11 AM|
Any reienforcement would work. Round .225" carbon tubes seem to be the most common for flat foam and would work fine.
As for the tail, it may even be simpler to just FOAM SAFE CA glue or GOOP the tail directly to the top of the plane....... Trying this idea this weekend.
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