Prototype Biplane Delta Maiden Flight at Liak on 17.12.2016

www.md-ng.si, Ul. IX Korpusa 73, 5250 Solkan; Kontaktna oseba: Kogovšek Sašo 041/772-257 (predsednik)

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Bernhard Sommerer
Začetnik
Prispevkov: 2
Pridružen: 19 Dec 2016, 23:07

Prototype Biplane Delta Maiden Flight at Liak on 17.12.2016

Odgovor Napisal/-a Bernhard Sommerer » 20 Dec 2016, 00:19

IMG_20161217_123604klein.jpg
prototype biplane delta rc equipped rtf
IMG_20161217_123604klein.jpg (232.11 KiB) Pogledano 2980 krat
Hello dear colleagues of Modell Club at Liak,

thanks for the possibility to fly on your airfield at Liak as a guest and thanks for the support on site and all of our interesting discussions and communications during the last weekends at our flight events.

Here some facts and pictures of the developement of design and prototype of the biplane delta wing conzept of this year for you and friends.

Material:
electic wire installation tube 40 x 40 mm plastic, mounted doubled to get construction height 80mm for biplane configuration
depron 10mm (2 layers 5mm glued together) for the wings, rudders and winglets
tape
engine ca 400w 1050 rpm/v
prop size 12" x 6"
Lipo 3 s 2400mah
weight rtf incl. batterie approximately 2.5 kg
wingspan 1,00m biplane wing
aera of both wings ca. 1m2
fuselage length 1,50m
no profile (flat level)
center of gravity at the front edge of the lower wing

before mounting rc configuration 2 days tests as a free flight object at ca. 40 trials on ground handling.
after these tests ca. 25 trials with rc function aileron and elevon, but no powerplant activation.
then installation of a triangle rudder and winglets for better performance on longitudinal axis.
at 17.12.2016 3 flight tests as sailplane on ground handling thrown by hand and afterwards the maiden flight with support of the electric power plant, ca. 4 min
meanwhile 6 testflights plus at liak and vipava and the result is a very easy flyable and selfstabilizing biplane object with a wide spectrum of performance speed and the option to land as a sailplane modell nearly in "walking speed".

Enjoy it if you like.

If you have any questions about the object you can write me a mail or sms, I will respose asap.

ingbsmail@gmail.com
+49 163 2858588

kind regards and always good flights and happy landings,

Bernhard
Priponke
IMG_20161122_023540klein.jpg
prototype design study paper modell
IMG_20161122_023540klein.jpg (148.51 KiB) Pogledano 2980 krat
IMG_20161128_235616klein.jpg
scetches before prototyping aircraft models
IMG_20161128_235616klein.jpg (144.46 KiB) Pogledano 2980 krat

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Andreo29
Freak
Prispevkov: 566
Pridružen: 13 Avg 2007, 20:43
Kraj: Nova Gorica

Re: Prototype Biplane Delta Maiden Flight at Liak on 17.12.2

Odgovor Napisal/-a Andreo29 » 20 Dec 2016, 10:26

Yes we were wondering, what is ESC doing in an electric cable support:
IMG_3398.JPG
ESC v kanalu za električne kable
IMG_3398.JPG (69.19 KiB) Pogledano 2944 krat
And the wing on that support cover:
IMG_3401.JPG
Krilo na pokrovu kanala
IMG_3401.JPG (83.57 KiB) Pogledano 2944 krat
Well, all together looks like:
IMG_3404.JPG
Mini prototip and prototip
IMG_3404.JPG (71.63 KiB) Pogledano 2944 krat
Zadnjič spremenil Andreo29, dne 20 Dec 2016, 14:16, skupaj popravljeno 1 krat.
Andreo
Slika

Uporabniški avatar
Andreo29
Freak
Prispevkov: 566
Pridružen: 13 Avg 2007, 20:43
Kraj: Nova Gorica

Re: Prototype Biplane Delta Maiden Flight at Liak on 17.12.2

Odgovor Napisal/-a Andreo29 » 20 Dec 2016, 10:29

The owner with "n-th" wonder of Lijak
IMG_3407.JPG
Bernhard in njegov X-1
IMG_3407.JPG (72.97 KiB) Pogledano 2943 krat
Andreo
Slika

Uporabniški avatar
Andreo29
Freak
Prispevkov: 566
Pridružen: 13 Avg 2007, 20:43
Kraj: Nova Gorica

Re: Prototype Biplane Delta Maiden Flight at Liak on 17.12.2

Odgovor Napisal/-a Andreo29 » 20 Dec 2016, 10:32

Don't think that this thing doesn't fly: it flies surprisingly good
IMG_3414.JPG
IMG_3414.JPG (14.91 KiB) Pogledano 2942 krat
IMG_3427.JPG
IMG_3427.JPG (92.04 KiB) Pogledano 2942 krat
IMG_3430.JPG
IMG_3430.JPG (19.27 KiB) Pogledano 2942 krat
Andreo
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