Arrow-copter. This is my dream-gyro

[Gyro_Kai]

Hello,

This concept has everything I ever dream of in terms of Gyroplane:

Enclosed, main gear works as wing with additional lift. Monocoque body, very light (250kg empty), with Rotax 914.

Hope it will one day become reality.
The only point to consider: Mast is made of composite, too.


http://www.arrow-copter.com/fd-composites_009.htm

Kai.

[gyromike]

That's a lot of slab-sided frontal area for that itty-bitty tail!

http://www.arrow-copter.com/img_5380.jpg

[ckurz7000]

Hope it will one day become reality.

Well, the prototype will be shown in Salzburg, Austria, this June. I met the designer and builder. Being Austrian, he visited our gyro nest in Fertöszentmiklos and we chatted about his project. He knows what he's doing and he's doing it conscientiously and meticulously.

I can't wait to see this machine fly.

-- Chris.

[Gyro_Kai]

I can't wait to see this machine fly.
-- Chris.

Sic! Keep us updated (me especially ;))

Kai.

[autogyro]

waiting for it

[tyc]

... mast is made of composite, to.


Saw the web site. Hope it works out for the fellow. Asked him to put out an English version of that website. His ARROW could prove to be interesting if it works out.

tyc

[gyroparts]

I own a Arrowcopter. Nothing special about it. The service ceiling is only about 300'. Seems a bit under powered.

[M._Springer]

Chris, You say , " He is doing it conscientously and meticulously," but has he experienced an engine out in it with a little wind ? I'll bet not!
I wouldn't put my tender body in a gyro with a large slab sided cabin area and with virtually no tail...Been there - done that, and once was enough .
Marion Springer
Gyro CFI-ret.

[Resasi]

That is a very pretty looking gyro. Probably still look good with a scaled up tail.

[chuter]

He knows what he's doing ..........

How do you know that he knows what he's doing?

[troed@aon.at]

Got a better pic from the Arrowcopter giving a better aspect of the proportions.

Tail doesn´t look that small from side-view.

Looks beautiful and reminds a little of the Carter Copter design, but as always: form follows function. Gas-Tanks are in the winglets, dunno if front wheel can be retracted.

Maybe we can sée it flyin´still this year. Gonna post photos if so

Angelo

[Mike Schallmann]

Looking at the side view and placing a horizontal line through prop center line of where the prop would be -- it looks like this an accident waiting to happen. This will be another good looking HIGH THRUST LINE gyro. As it sits 85-90 percent of the weight is BELOW the thrust line. When you add the occupant (s) it will even go farther than that. I realize that the rotor assembly will offset that to some extent -but it wont be nearly enough--

Also if you calculate where the rotor thrust line is - and estimate the CG -there is insufficient verticle fin area to handle low power / engine out situation --except under the best of conditions --

Gawd --why do people --even talented ones continue to design and build gyros based on astestics rather than aerodynamic principles--

[Leonid]

If you have a look at this picture:
http://www.arrow-copter.com/gyro_h9591.jpg

It looks like the wheel is retractable and it should b flying with the nose slightly upper. Am I right? Then the thrust line comes lower.

Leonid

[All_In]

Ok I'm starting to get it!
I looked at the profile and thought. Thats looks like it has a awfully high thrust line.
Now you confirm it's true.
You guys are teaching me, thanks so much I'm starting to just see it too.

[Mike Schallmann]

Lenoid-- Even with the wheel up it is still below the THRUST LINE .. Retracting the wheel MAY raise the CG as much as 1/4". Lets face it a 10# (guess) wheel assy raised up 8-10 inches will have very little effect on the gyro as it is a miniscule amount of weight when compared to the GROSS WEIGHT of the gyro. Also that artists rendition is in all probability inaccurate as to the flying charecteristics of the gyro. Looking at the picture it appears that the gyro is in a slight climb. It is a good looking gyro --but it is definitely a HTL design.

On my gyro I am very close the a true CLT --but I have a very large horiz stab. I use heavy blade blades -the rotor assy weighs over 85# --I tried Dragon wings at 40# -but it affected the handling of the gyro --the teeter bolt of my gyro is 4' above the CG so with that long of a moment arm a 45# decrease in weight has tremendous effect---

[Leonid]

I do not know details of this design (nor I can read German). I just noticed on the two photos earlier in the thread (the side one mostly) that air intakes go more up towards the prop (if you can say so) which would mean that in normal flight the nose should be upper to make them level. ... If it is true - then it is not a dramatically HTL.

Xeneon is also slightly upper TL (it as discussed on the forum) the cabin aerodynamics adds up to total stability picture.

It might be a similar case.

A regular gyro would have TL level and the prop thrust adds a bit to the total lift when the nose goes up at the take off, but nobody said It has to be like this.

I just wonder if I'm right.

Leonid