AUDAX
- claudecuinet
- Modérateur
- Messages : 2863
- Inscription : 06 sept. 2004, 15:05
- Avion : HARMONIE E
- Moteur : HACKER Q80 14XS
- Hélice : RS tripale 21x14
- Carburant : HACKER 5000 mAh 20 C
- Emetteur : FUTABA 14 SG
- Servos : Autres
- Catégorie : Nationale 2B
- Fréquence : 2,4 Gh
- Voldos
- Pilote Confirmé
- Messages : 405
- Inscription : 16 sept. 2005, 19:02
- Emetteur : MC20 Hott
- Récepteur : GR16 Hott
- Servos : Autres
- Fréquence : 2.4GHz
- licence : 9906092
- Localisation : Aéromodélisme Vallée de la Veyre--63730--Les Martres de Veyre
- Contact :
Re: AUDAX
on voit peu d'articles sur les systèmes contra-rotatifs
Mis à part en F3P, est-ce que des compétiteurs français l'utilisent en F3A ?
Mis à part en F3P, est-ce que des compétiteurs français l'utilisent en F3A ?
- claudecuinet
- Modérateur
- Messages : 2863
- Inscription : 06 sept. 2004, 15:05
- Avion : HARMONIE E
- Moteur : HACKER Q80 14XS
- Hélice : RS tripale 21x14
- Carburant : HACKER 5000 mAh 20 C
- Emetteur : FUTABA 14 SG
- Servos : Autres
- Catégorie : Nationale 2B
- Fréquence : 2,4 Gh
Re: AUDAX
Bonjour Christian
En France, il y en a au moins un. Il a fait un championnat de France avec.
Aux US, comme le système est conçu et vendu par Brenner qui est américain; il y en beaucoup qui l'utilisent malgré le poids supplémentaire et le coût.
http://www.rcuniverse.com/forum/electri ... es-42.html
En France, il y en a au moins un. Il a fait un championnat de France avec.
Aux US, comme le système est conçu et vendu par Brenner qui est américain; il y en beaucoup qui l'utilisent malgré le poids supplémentaire et le coût.
http://www.rcuniverse.com/forum/electri ... es-42.html
- Cedric Carayon
- Equipe de France F3A
- Messages : 361
- Inscription : 09 avr. 2006, 21:55
- Moteur : YS 200S DZ CDI
- Hélice : 21 * 10 WPNC
- Carburant : YS FUEL
- Servos : Futaba
- Catégorie : Internationale
- licence : 9503990
- Localisation : Au pays du cassoulet !
- Contact :
Re: AUDAX
Je connais un pilote inter qui vient de recevoir ce système là, et si les essais sont concluant on le verra tout au long de la saison prochaineVoldos a écrit :on voit peu d'articles sur les systèmes contra-rotatifs
Mis à part en F3P, est-ce que des compétiteurs français l'utilisent en F3A ?
http://www.modelisme-smac.fr
Importateur YS - Kato - Hatori - Tettra - Nishioka - Asano
Marque Française : LABEMA
http://cc-f3a.blogspot.fr
Importateur YS - Kato - Hatori - Tettra - Nishioka - Asano
Marque Française : LABEMA
http://cc-f3a.blogspot.fr
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- Champion de France 2011 Nat B
- Messages : 191
- Inscription : 08 nov. 2007, 13:36
- Avion : PEGASE II
- Moteur : OS 61RF
- Hélice : ?x?
- Emetteur : FF9
- Récepteur : futaba
- Servos : Futaba
- Fréquence : 41.000
- licence : 0801314
- Localisation : Rennes
Re: AUDAX
Cedric Carayon a écrit :Je connais un pilote inter qui vient de recevoir ce système là, et si les essais sont concluant on le verra tout au long de la saison prochaineVoldos a écrit :on voit peu d'articles sur les systèmes contra-rotatifs
Mis à part en F3P, est-ce que des compétiteurs français l'utilisent en F3A ?
Peux -t-on avoir ses initiales ?!
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- Pilote Confirmé
- Messages : 112
- Inscription : 09 août 2008, 15:33
Re: AUDAX
Thank you Claude for starting the Audax thread. It's been a while, but we made some progress on the model so i will post some updates here.
The model will be full composite, so this means we had to manufacture molds for fuselage,canopy,wings, stabs and rudder. All the mold plugs were machined on a CNC router, here are a few pictures of the stab mold plugs during machining process:
The model will be full composite, so this means we had to manufacture molds for fuselage,canopy,wings, stabs and rudder. All the mold plugs were machined on a CNC router, here are a few pictures of the stab mold plugs during machining process:
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- Pilote Confirmé
- Messages : 112
- Inscription : 09 août 2008, 15:33
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- Pilote Confirmé
- Messages : 112
- Inscription : 09 août 2008, 15:33
-
- Pilote Confirmé
- Messages : 112
- Inscription : 09 août 2008, 15:33
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- Pilote Confirmé
- Messages : 112
- Inscription : 09 août 2008, 15:33
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- Pilote Confirmé
- Messages : 112
- Inscription : 09 août 2008, 15:33
Re: AUDAX
We built a few composite fuselages in the past but composite wings are a new experience for us. We only found very limited online material about this subject, so the only way to get it right was to build a pair of wings, see what comes out and adjust the manufacturing process accordingly.
The composite skins are made of 2mm Airex sandwiched between 2 layers of 50g/m2 fiberglass, with a strip of peel ply for the hinge line. Everything was vacuum bagged and put in the oven for curing at 60 deg C.
All the parts for the internal structure were laser cut; we used 3mm liteply for the ribs supporting the wingtube and 6mm balsa for the main spar. These parts were considered critical so they were carbon laminated, which added quite a bit of weight. We also added a few strips of unidirectional carbon between the main spar and the wing skins. All the other parts were made of 2.5mm balsa.
The internal structure alone was 140g, which made it clear from the start that this pair of wings were going to be heavy, but we decided to build them anyway and use them for testing.
A few images of the wing internal structure:
The composite skins are made of 2mm Airex sandwiched between 2 layers of 50g/m2 fiberglass, with a strip of peel ply for the hinge line. Everything was vacuum bagged and put in the oven for curing at 60 deg C.
All the parts for the internal structure were laser cut; we used 3mm liteply for the ribs supporting the wingtube and 6mm balsa for the main spar. These parts were considered critical so they were carbon laminated, which added quite a bit of weight. We also added a few strips of unidirectional carbon between the main spar and the wing skins. All the other parts were made of 2.5mm balsa.
The internal structure alone was 140g, which made it clear from the start that this pair of wings were going to be heavy, but we decided to build them anyway and use them for testing.
A few images of the wing internal structure:
- jclaude
- Pilote Confirmé
- Messages : 177
- Inscription : 31 août 2005, 09:57
- Avion : Monolog 110 - Epower
- Moteur : 1820W
- Hélice : 17x10
- Carburant : Lipo
- Emetteur : Radiomaster TX16S
- Servos : Autres
- Fréquence : 2.4Ghz
- Localisation : Belgium
- Contact :
Re: AUDAX
Waouh! Very interesting subject!
I'm not a great fan of full composite structure, but, I'm very interested to follow, and learn, the latest technology.
Regards.
I'm not a great fan of full composite structure, but, I'm very interested to follow, and learn, the latest technology.
Regards.
jclaude
- fabien drouet
- Chef des boulets
- Messages : 790
- Inscription : 06 août 2005, 19:22
- Avion : XARELTOO
- Moteur : HACKER Q80 13XS SPEC
- Hélice : 20x13
- Emetteur : T12FG
- Récepteur : FUTABA
- Servos : Futaba
- Catégorie : Nationale 2B
- Fréquence : 2.4Ghz
- licence : 0508863
- Localisation : 91
Re: AUDAX
Par curiosité, pourquoi cet a priori sur le full composite ?
XARELTOO
20X13 PT MODEL
Futaba T12FG 2.4Ghz
OXgwePew
N° licence: 0508863 - AD
N° CLUB: 0004 - 329 (St FARGEAU PONTHIERRY)
20X13 PT MODEL
Futaba T12FG 2.4Ghz
OXgwePew
N° licence: 0508863 - AD
N° CLUB: 0004 - 329 (St FARGEAU PONTHIERRY)
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- Pilote Confirmé
- Messages : 112
- Inscription : 09 août 2008, 15:33
Re: AUDAX
Fabien,
The foam and balsa wings have the advantage of being very light, but because of the hot wire cutting technique for the wing core, as a designer you are limited to a polygonal shape for the wing. Since i wanted my wings to have curved tips, i had to choose between built-up, balsa structure wings or composite construction wings. At that time i was quite busy with traning and contests so i had no time for designing a balsa structure wing; i also had a good offer from a friend for CNC cutting the mold plugs so i thought why not...
The stabs came out at 104g which is a pretty good weight for composite construction. As expected, wings are quite heavy (~496g) but i can use them for flight testing and we have plenty of ideas where we can save weight, so i'm sure we can achieve the target weight with the next pair of wings. The elevator is already cut and the peel-ply hinge seems very good.
The foam and balsa wings have the advantage of being very light, but because of the hot wire cutting technique for the wing core, as a designer you are limited to a polygonal shape for the wing. Since i wanted my wings to have curved tips, i had to choose between built-up, balsa structure wings or composite construction wings. At that time i was quite busy with traning and contests so i had no time for designing a balsa structure wing; i also had a good offer from a friend for CNC cutting the mold plugs so i thought why not...
The stabs came out at 104g which is a pretty good weight for composite construction. As expected, wings are quite heavy (~496g) but i can use them for flight testing and we have plenty of ideas where we can save weight, so i'm sure we can achieve the target weight with the next pair of wings. The elevator is already cut and the peel-ply hinge seems very good.