How to properly design a VTOL/ADAV helicopter-plane?

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Re: How to properly design a VTOL/ADAV aircraft-helicopter?




by Christophe » 18/03/23, 13:30

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Re: How to properly design a VTOL/ADAV aircraft-helicopter?




by Remundo » 18/03/23, 21:44

Saint Yan, it's not far from my home, it's worth going there.
an exceptional reduction of 180 € is granted if the registration is done
during aeronautical gatherings (RSA, ULM Blois). She is still from
100 € if the registration reaches us before April 1, 2023 (and 50 € if it
arrives before May 1).

kézaco the RSA, ULM Blois?

probably this: https://www.rsafrance.com/index.php/age ... el-a-blois
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Re: How to properly design a VTOL/ADAV aircraft-helicopter?




by Christophe » 19/03/23, 11:07

Yes, these salon discounts are weird...

I will contact Michel Kieffer again, he has been in the association for a long time...
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Re: How to properly design a VTOL/ADAV aircraft-helicopter?




by Remundo » 29/03/23, 00:17

Remundo wrote:Lift, Drag and Wing Smoothness

Also, there is a tendency to lengthen the wing, to reduce the chord at the wing tip[/b], but also to install devices there to reduce these parasitic vortices such as fins / winglets.

Image


Found on facebook, this concept that doesn't skimp on winglets

Atea_VTOL_ascendant_flight_technologies.png
Atea_VTOL_ascendant_flight_technologies.png (332.91 KiB) Viewed 116 times


Which in my opinion mixes the good and the less good.

I find that the layout of the wings is interesting, especially at the front where the "duck" fins are very developed to the point of forming almost a normal-sized wing.

The aerodynamics of the fuselage in airplane mode seem to be of good quality.

On the other hand, the installation of the propellers in the wings is harmful; this probably decreases lift in airplane mode in addition to generating turbulence/drag on the wings.

If you have money, here it collects by tens of millions €..., very proud of their aerodynamically questionable project at first glance.
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Re: How to properly design a VTOL/ADAV aircraft-helicopter?




by Christophe » 29/03/23, 00:59

Not even made and already expired: there are double winglets 8)

I find it hard to believe in the stability and performance of pierced wings... : Shock:

21 Million, 245 promises of sale based on a prototype that never flew (at least not in the air…)…here is the start-up nation of big mouths that is banding… Macron… : Evil:
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Re: How to properly design a VTOL/ADAV aircraft-helicopter?




by Christophe » 30/03/23, 09:25

I found this Remundo in a professional equipment magazine, it's in your corner apparently: Fleasy X8ed in flight...virtual!

I didn't know that we could certify on the basis of scale models!! : Shock: : Shock: : Shock:

X8ed.jpg
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This allowed me to discover: https://hionos.com/ which looks interesting!
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Re: How to properly design a VTOL/ADAV aircraft-helicopter?




by Remundo » 30/03/23, 10:07

yeah the shape of the wings inspires. They are looped, which reduces the marginal vortices at the tips of conventional wings.

This contraption on the other hand is a little strange, it is an "octocopter" whose wing seems to tilt.

But it is above all by its propulsion which in my opinion is a big pipe...

I quote "a turbocharged high temperature fuel cell"...

Not content with this gas plant, the designers added a tank of hydrogen... liquid, that is to say close to absolute zero...

I bow !
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Re: How to properly design a VTOL/ADAV aircraft-helicopter?




by Christophe » 30/03/23, 10:26

Apparently it goes to the EASA! : Mrgreen: : Mrgreen: : Mrgreen:
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