|Oct 30, 2013, 07:00 PM|
|Nov 05, 2013, 04:37 PM|
Hi all followers !
I worked on several things this week...
I made the steerable nose wheel with a pull-pull system with 2 pulleys...
Because the steer servo couldn't be place in front of the retract.
When the nose wheel is extended, the wire is tight
No problem to steer the wheel ... to be tested with the plane on it's wheel of course...
Note that the servo direction is opposite...So I can use the same one for the rudder.
The nose support is drilled, with removable system
The central elevator is done also.
Dry test of the tail cone
The beast on his no-wheeled-yet legs...
I mounted the two motors.Turnigy 2836 2350Kv (much more than that it seems....). I tested it: with two contra-rotating props 4.5X4.1, the 2 motors draw 75amp, nearly 1000 Watts both...Yehaaaaa
About the weight.
Total weight unpaint and without the wheels:
Wing with the guts: 1540g
with two batteries 4S 2.650mAh: 560g
=2360g total without the paint and wheels.
for a weight of 2500g (88 oz) , it will give a wing loading of 70g/dm²
(23.3 oz/sq ft). That's near of what I expected.
To be continued....soon?
|Nov 08, 2013, 06:02 PM|
Thank you Lionel, I love counterrotating and I am considering a Concorde model as well.
I habe built a few Depron test beds so far. The next model will be about 130 cm long, 55 cm wide, and much more beautiful, I hope :-) . So your report is of great help to me. One problem that I would have is taking off on a undercarriage. As far as I know, the Concorde needs about 15° AoA to lift off. Now with pushing Propellers, this is difficult to do, because the propellers hit immediately the ground. For my model I plan to use a Bungee start, with an appropriate catapult to launch it into the air with turned off engines. Only after Bungee hook separation would I turn the engines on. How do you plan to solve this problem in your Version?
|Nov 12, 2013, 04:43 PM|
I raised a little the landing gear and I put the motor on the maximum height.
On the plan, the max angle it can take on take off is 20 degrees. I hope it'll be enough. I think this plane have to take off by it self, without pulling too hard.
On the landing phase, i hope the ground effect will be with me...
I may put a litte wire under the prop to avoid the prop to touch...
|Nov 12, 2013, 05:00 PM|
Second UK was developing own SST and France was developing theirs independently ... it was one of the few ventures that UK and France in those days finally decided to agree on joining together to develop .. that Concorde was so named because of this.
I only know because of my Fathers involvement in Concorde to be Certified for Commercial flight.
|Nov 12, 2013, 05:08 PM|
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