This week I overcame the challenge that is making foam wings out of sheets of foam... hard to describe, you'll just have to watch it : )
I finally got it down and cut out two wings for the Raptor, taped em' up and got the electronics ready...See you next week!
-Trent
Comments
In an effort to get back to the Raptor (if Trent electrocutes himself, at least he has been warned)...
Petrus - very nice model, well done!
In regards to flying wings, check out this plan set from 1971, Voodoo.
Though originally a soarer (HLG or otherwise launched), the size of the body cavity looks to be a good fit for stuffing all sorts of gear. The nose also has enough area for an electric conversion.
I scanned through the flying wing link Petrus provided and they don't have the Voodoo listed...yet.
That is a very nice drawing David.
This Radio Shack Transformer will do the job nicely or at least give you a basis to find a comparable item.
The transformer reduces the voltage and isolates the user from the line power (aka 'mains' for those outside the USA).
Although the electricity does not care, we humans have declared the wiring colors associated with the power to be: Black (International - Brown) is the Hot (Source), White (Int. - Blue) is the Neutral (Return). Green (Green-Yellow) is the Ground.
Hi Trent
The lamp does not go to the cutting wire, it goes across the dimmer and the transformer. the dimmer controls the power to the lamp as normal and the transformer sees the same voltage / power as the lamp on its primary side. the output is proportional to the input and so you control the current to the wire. my transformer has 2 outputs 12 volt for 0-30 inch wire and 24 for 0-50 inch wires.
Sorry about the sketch. I'm not near my drawing system . They were all donne this way in the past.
RD: Love the drawing! That really helps. Question: where would I put a light bulb to act as a indicator and "voltage reducer" (i.e. my voltage regulator doesn't have the resolution I need, and the line alone is just way too much power anyway)? Between the light dimmer and nichrome wire correct? Would a standard 60w bulb suffice?
Thank you again for your help, this is already feeling much safer...
I posted this on Trent's Forum page but for those thinking about copying the previously mentioned circuit (DO NOT DO IT), this Paint sketch should illustrate what David and I are talking about. (I've got 34 years in electrical/electronic service and have made plenty of mistakes myself).
Trent,
Thanks for the compliment but please don't be ashamed of your work. This plane was built on the fly, it evolved from my head without prior planning and even the dimensions might be out with 5mm or so either side.
Wow Petrus, that looks amazing... I'm a bit ashamed of mine now :(
Trent, yes you can simulate the reflex with elevon-up trim.
I am almost complete with my 1.8m blended wing. Also done with EPS, covered with a layer of 1.5 mm balsa (1/16 ") and vinyl. Specs will follow when complete
David: Very good tips... I'll work to add these to my set up. I also vote for you as safety coordinator president. : )
Petrus: Very cool... would there be any essential difference between reflex and some up-elevator trim? (aka elevon up trim)
Trent, regarding reflex, have a look at the MH45 airfoil. On the trailing edge you will see that it points up, this is the reflex. Here is an image
For more info regarding flying wings have a look at the following site, they provide a lot of detail and also downloadable PDF's
Kind Regards
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