This morningI was looking Through the forum thinking about the Jelly Fish Kram put up viewtopic.php?f=37&t=251
Then I came across 7up's Matrix VTO "wow what a cool looking plane"
viewtopic.php?f=34&t=276
Went to get breakfast at Nifty Fifty's http://www.niftyfiftys.com
After looking at the back of menu I saw a Space Ship It reminded me of Buggs and Marvin the Martian http://www.youtube.com/watch?v=GfDIQqn5RI4 and said to myself That would be a cool VTO.
I did a little doddle on a napkin and half a day on Sketch up I got this
I still have some work to do on the sketchup files As I want to change some things like the size of the elevons and fins .

Will post the compleated SU files soon.

Cheers
E-T Attached files

 

I love it ET! Those nice curves give it a real sleek look. Nice napkin work too... Some of the greatest songs in the world were written on brown paper bags... :mrgreen:

 

Cool! man I love it!
I hope that it flies as cool as it looks
Thanks for posting Glen

 

Cool man!
Makes me think of when the R/C sidewinder missle was made.

 

This is my first Full Fuse build in SU. Well first one I finished "still working on the bird dog".
Last night I decided to make some changes to the fuse and split it in half. Cut it out and did not like the results. I needed about 4 more hands to get the fuse together. So ok lets split into quaters and instead of a slip in design I will tabb the whole length. No problem tabbed the fuse w/o any problems. Then on to the fins well... ROUND and TAPERED fuse flat fins my brain was starting to hurt at 1:00 in the morning.I couldn't get the holes to line up with the tabs. :evil: Went to bed thinking about it and It hit me like a ton of bricks. There is a projector in SU DUH 90 deg.

I still have to cut it out and give it a try tomarow night as it's to late to fire up the PP. Next mod to the PP is going to have to be Meistertek's Cone of Silence http://www.phlatforum.com/viewtopic.php?f=12&t=259

I'm going to release the SU as I feel good about how it will go together now. In the file I left the orginal slip fuse and some of the work up stuff. I didn't add a rudder Because I cant fly 3-D yet. I just want the VTO to start off with. Now it's on to building it and getting the C of G correct. I have one question mabey someone can answer or give a suggstion on? [edit]Should I install the motor for the test glides?



Cheers
E-T Attached files 50s vto v6.4.skp (1.4 MB)Â

 

I said that wrong! How about should I install the motor on the plane to find the C of G.

E-T

 

I'd suggest a glide test with nothing but some weight (if needed) to find the CG. Once a smooth glide and soft landing are obtained add your gear and balance at determined CG.

Good luck!

 

Thanks 7up

That was the answer that I was looking for but wasn't sure with it being a pusher. I will prob. add the weight to the bottom fin to keep the bottom fin pointed down or keep the CG low? I think that is what TigerPilot was trying to say?

E-T

 

I am sorry to say that I'm thinking of pulling the plans for this build untill I can test some things out! I have cut this out five or more time and I think the tolarances are to tight or something. I also want to test the gcode on other plans. I have been getting some funky stuff happing with this build. Cuts all over the place and not cuts where they should be. I'm getting very frustrated and have to take a break from it.

[edit] ok I have found one prob that I was having. The parameters box would not let me change The bit Size to 1/16" some times it's Fractional and sometimes decimal. Even thou I typed in 1/16" it would not change bit size to .0625 till I typed in as decimal.

Cheers
E-T

 

Decided to give this a try again this morning. Made sure bit size was .0625 and generated the Gcode. Started cutting and I went up stairs when I come back my computer must have auto updated and restarted. WTF So I started to cut it again and my y axis came off the stepper. I am starting to think that this plane is cursed. Ok one last time I will try to cut out. Yea " Jumping up and down" It cut it out fine this time. On to the build and It went together perfect just like a good plan should. I did a few test glides and the C of G is good where It is. 5" from LE of Wing Unconfermed. Now on to the next step I don't think I'm going to put the Electronics in side the fuse yet to keep the CofG low and ease of movement.



Cheers

E-T Attached files

 

Glad to hear you got it cut out
I was looking at the design and it looks like where the motor is mounted there is a foam disc did you glue a wood disc on top of that to mount the motor too?
Mark

 

YEP YEP That is how I make up most of my motor mounts.

E-T

 

Ok just checking thanks for the info I never tried it that way and wondered if it would be strong enough
Mark