Top Secret! Parasite Micro-figher: Model 985-20
- Thread starter FoamyDM
- Start date
jfaleo1
Junior Member
We seem to think alike. I have a started set of drawing for one of these too. It is a Boeing concept for a micro-fighter that could be stacked into a large transport. At least it looks like the same one I was working on. Yours looks a lot better. How big and EDF or prop?I designed this, and built this to see how quick it would be to build, and if it can glide/fly.
Can you guess what it is? And what project this will turn into?
Here's a hint: NASA
View attachment 140446
Edit: If I look closer I can see a measuring tape, Doh.
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I like where you're going... but I love that name and wonder what designs this community would come up with for that name.
Yup That's IT.
We sure do. Why do you think I was so jealous about that beautiful Airliner.
I have been making projects to use the Spruce gosling motors 1106's with 3" props. but I really wanted to use a 30mm edf, mine won't have enough flow.
@jfaleo1 -Maybe we should combine out powers. I'll send you a PM.
jpot1
Elite member
I’m getting closer to finishing those plans!
I was hoping to take those and round-ify them for my purposes.
I thought I designed it for the 30mm edf I owned. Turns out i did.
As with most EDFs near the front, the problem is battery placement. I'm thinking if I make the Fuse a Touch wider, (the wings will take it.) I should be able to slide the EDf back a bit. allowing for batteries to be place in a more traditional up front location.
As with most EDFs near the front, the problem is battery placement. I'm thinking if I make the Fuse a Touch wider, (the wings will take it.) I should be able to slide the EDf back a bit. allowing for batteries to be place in a more traditional up front location.
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jfaleo1
Junior Member
Looks really good so far. If possible, I agree move the fan back and battery fwd to help balance as well. Where is CG working out to be?
I have 50, 55, 64 and 70 mm fans to work with so my plans (which are nowhere near done) are a bit bigger (50mm is what I scaled for).
Do you notice a big difference between the 50 and 55?
I think I've got a pair of 64's 50s 70s and if I disassemble my mini A-10, I have three 30s. I haven't been impressed with the output on the 30mm that's free (pictured). As long as this glides well, and is capable of flight it will make my project goals.
What diameter is the fuse With the 50s?
I think I've got a pair of 64's 50s 70s and if I disassemble my mini A-10, I have three 30s. I haven't been impressed with the output on the 30mm that's free (pictured). As long as this glides well, and is capable of flight it will make my project goals.
What diameter is the fuse With the 50s?
jfaleo1
Junior Member
Actually he 55 is on the way so I'm not sure. ????? I will have to pull up the plans I started with later tonight and check. My initial design was a boxy vision to see if it would fly at all before I went to the trouble of making a proper curvy version. my artistic abilities are slim to none so squares are easier than circles in general LOL. With patience (which as an adult with ADD I have little of) I should be able to get a good working idea of size for you.
The only thing I noticed about yours that differs from what I was eventually going for is size and your tip plates are not "V"ed inwards. but as you say proof of flight is always first.
Hmm, I have a spare 30mm EDF with a matching ESC sitting around that I have been trying to think of a project for. I have a bunch of nanotech 450mAh 3s lipos also, but I am not sure if they will end up being too heavy at 40g for any plane powered by this EDF. I would be interested to see how heavy your design ends up.
@jfaleo1 - For the record, the -20 is the coolest one, one word...ramjet The VSW is a close second for me. (like a mini-Tomcat)
Lets check specs and pull out the calculator:
The 30mm edf is rated to push 200g on 3S I have a 3s 300mah pack now so I can retest but on 2 cell my last test was woefully short of that mark i think 120g.
Motor
View attachment 141498
Battery
ESC
Plane:
I didn't weight it, but this design takes up about 50% of a sheet (115g/2) x 75% utiltiy factor (25% is tyically waste) x 78% [for over 50% of the paper removed on one side (35% weight savings for 100% paper removal - 20g reduced to 13g with one side paper removed] on one side add half a glue stick. (24g/2) +5g canopy
33g FB+12g glue +5g canopy+ tape =50g
Weights:
Plane - 33g+12g+5g= ~50g
12A ESC and wires = ~14g
Motor = ~20g
Servos 2-5g = 10g
Battery = 24g
Total Wt 118g Say 120g
2 comments on this - 1. That's a lot of weight for a 9" delta wingspan
and that means the Payload for the 767 is minimum of 1kg for the 8 planes plus track and delivery arm.
I don't know about you... but I have been tempted to build 'em all (too much Pokemon Detective lately), if for no other reason but to see how each flies.
This sums up my plastic model building experiences:
Glues never hold, and the cockpit canopy is always a mess. I post this here because that is how I feel about the canopy I put together for this plane.
JTarmstr
Elite member
This sums up my plastic model building experiences:
Glues never hold, and the cockpit canopy is always a mess. I post this here because that is how I feel about the canopy I put together for this plane.
Haha, my favorite was always this one, basically describes the first model i built.
Also is the plan to fly this in formation with a 747 or will you be attempting to devise a launch mechanism?
Devising a launch mechanism"Go Big or Go Home" If I'm doing this I was hoping to do 1 of 3 things with this. All of them involve launching them from the jumbo jet.
1. Drop the Micro-fighters as gliders. that circle to the ground.
2. Release remote activated rocket powered gliders.
3. Drop an RC squadron of Micro-Jets.
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