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Sep 19, 2006, 05:34 PM
homo ludens modellisticus
Ron van Sommeren's Avatar
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Hydrogen powered Horten flying wing


Last weekend at the Aspach (Germany) electric event (best, biggest in the world?)

Hydrogen powered Horten flying wing + diy outrunner
Videos & tech/development info
http://hy-fly.de/
Motor: 10mm outrunner kit from http://www.batt-mann.de
Fuel: iquid hydrogen (99,9%) in two plastic bottles at 10 bar pressure
Stack consists of 12 cells ( http://www.heliocentris.com/ )
Stack weight: 1,1kg
Max power: 65Watt, 6Volt, 11Ampère
Wingspan: 2m
Weight: 650gr (empty of course)
Plastic bottles (tested at 20bar) will be replaced by aluminium bottles (tested at ?? bar)


Vriendelijke groeten Ron
diy motor building tips & tricksint. E fly-in & diy outrunner meet, Aug.26 2007, Nijmegen, the Netherlands
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Sep 19, 2006, 06:21 PM
resU deretsigeR
PaulVi's Avatar
That is truly inovative. think of it not time between flights other than the time to recharge the bottles very cool....
Sep 19, 2006, 06:31 PM
homo ludens modellisticus
Ron van Sommeren's Avatar
Thread OP
Very cool indeed
Sep 19, 2006, 07:29 PM
↓↘→ + (punch)
theKM's Avatar
fantastical!
Sep 21, 2006, 12:07 PM
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ssatoru's Avatar
Amazing. Fuel cell! It already flew last year? Most amazingly they developed not just a test bed plane but scale Horten!

Thank you for sharing.

Satoru
Sep 27, 2006, 01:30 PM
Registered User
Very impressive. I'm courious what is the weight of all that battery fueled and what is the mAh rating of it?
Sep 27, 2006, 01:53 PM
resU deretsigeR
PaulVi's Avatar
Quote:
Originally Posted by Szymon Bartus
Very impressive. I'm courious what is the weight of all that battery fueled and what is the mAh rating of it?
Max power: 65Watt, 6Volt, 11Ampère


in the first post
Sep 27, 2006, 03:03 PM
Registered User
The hydrogen Bit is certainly unique... the Horten part is not. If you will observe, the ailerons are postioned in the 'up' position indicating that either the Balance is grossly in error or the horten angle of attack formula is not even close to the brother's designs.
Seems another imposter?
Sep 27, 2006, 05:54 PM
homo ludens modellisticus
Ron van Sommeren's Avatar
Thread OP
It can fly for 6 minutes, it is said somewhere in the videos. At 1,1kg the fuel cell is pretty heavy, it can be made much lighter.

Full scale developments:
http://www.initiative-brennstoffzell...etail/229.html




Vriendelijke groeten Ron
diy motor building tips & tricks
diy brushless motor discussion group
Drive Calculator download & discussion group
int. E fly-in & diy outrunner meet, Aug.26 2007, Nijmegen, the Netherlands
Sep 28, 2006, 10:35 AM
Registered User
Quote:
Originally Posted by PaulVi
Max power: 65Watt, 6Volt, 11Ampère


in the first post
I was asking about the capacity
Sep 28, 2006, 12:13 PM
Registered User
Heh. Very cool. Looks like the system out of their little rc car. It will be neat to see this technology become more mainstream. I saw that tiny little experimental fuel cell wing a long long time ago. This is a cool next step.

We won't mention even a turbine is still cheaper.

Mike
Sep 28, 2006, 02:33 PM
homo ludens modellisticus
Ron van Sommeren's Avatar
Thread OP
By the way, the pictures are not mine, they were made by Paul-Henri Tirtiaux & Patrick Bossin from Belgium. Unfortunately, I could not visit the Aspach electric event, my back is giving me troubles (that's what you get when you're over 2 meters (6'7") and over 44 :twisted: ), I could not drive the 450km. Next year ...

Vriendelijke groeten Ron
diy motor building tips & tricks
diy brushless motor discussion group
Drive Calculator download & discussion group
int. E fly-in & diy outrunner meet, Aug.26 2007, Nijmegen, the Netherlands
Sep 28, 2006, 05:32 PM
Senior Member
sguty's Avatar
Very cool! Looks like they had a custom stack made, as the heliocentris site only features a 10-cell 50W stack in that size range?
Gotta love the way you can concatenate words ad infinitum auf Deutsch--try saying this three times fast:
Das Wasserstoffgetriebene Brennstoffzellenhortennurflügelexperimentalmodellf lugzeug
(from the hy-fly.de website)
Oct 26, 2006, 03:21 PM
Registered User
@ sguty

yes - you´re right. The fuelcell stack has been modified by heliocentris. Two more cells were added to the original stack in order to increase the systemvoltage. We were lucky that the stack didn´t got even heavyer with the actual 12 cells. But it`s still way to heavy for a 100% hydrogenflight. we estimate the consumption during the flight of about 110 Watts ( 60 % from the fuelcell )...
The hydrogen-gas lasts for 6 minutes if you put 6 bar pressure into the bottletanks. With 10 bar it´s about 10 minutes.
(145.038 psi if you want so)
http://www.sengpielaudio.com/calcula...ssureunits.htm

greetings from germany
Christof
Oct 27, 2006, 04:17 AM
Registered User
Hi ,
some moor infos about fuelcell Airplanes.
The Hyfish is a invention by the DLR Germany with Mr.K.Schaffrot .The fuellcell stack has to deliver 1000 watt and weight 1100g .The storage is a 700 bar presure Carbon liner .Trust will be from a Schübeler Impeller DF 51 with a Lehner 1940/12 Motor.First fligh will be during December 2006. http://www.smartfish.ch/index.cfm/fu.../path/1-45.htm .


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