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Aircraft - Electric - Airplanes Giant Electric Planes Build Log (5.2m) 205" MQ-9 Reaper RPV / FPV and UAV


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Yesterday, 01:00 AM #106 Report
abroadhurst94
Registered User
United Kingdom, England, Lincoln
Joined Jun 2011
403 Posts -edit-
Double post



Yesterday, 07:07 AM #107 Report
3DDFHobbies
Registered UserUK, Greater London, Hackney
Joined Dec 2010
5,259 Posts Quote:
Originally Posted by abroadhurst94
I know I said with models under 7kg's, the pilot doesn't need to hold a valid 'B' certificate, but please consider taking the certificate tests with a model this size.
I know I'd be scared as hell to be anywhere near a model like this unless I knew the pilot was fully competent, which is what the tests and certification shows.
Especially when the only video of you flying something, ended with a crash on take off!

Then again, there's no point taking the tests for a model that will likely never see the light of day..

New Rule for this Thread.. if you dont have anything good to say then dont Post! (Refering to other With posts that have no validd points , not refering to alex's post)

now for God sake back on topic



Yesterday, 07:30 AM #108 Report
alfa166
100% crasherSverige, Skåne Län, Hässleholm
Joined Sep 2011
12 Posts Hello K!

once you have figured out all the bottlenecks of this builD and got it flying; could there be a "kit" out of this model minus hardwAre(motor/servos etc etc)
building the first means you will have to make cutting of the different parts plus making the moulds (many steps in your fabrication is well over my level- better leave that to guys who nows- like you!, also my living is puttiNg a firm stop to a build like this- no space!!)

i have time to wait for a kit if There will be, only proBlem is transportation- just got a smart, but hey!! everything goes with the right spirit and a little afterthought.

//jJ



Yesterday, 07:39 AM #109 Report
3DDFHobbies
Registered UserUK, Greater London, Hackney
Joined Dec 2010
5,259 Posts Quote:
Originally Posted by alfa166
Hello K!

once you have figured out all the bottlenecks of this builD and got it flying; could there be a "kit" out of this model minus hardwAre(motor/servos etc etc)
building the first means you will have to make cutting of the different parts plus making the moulds (many steps in your fabrication is well over my level- better leave that to guys who nows- like you!, also my living is puttiNg a firm stop to a build like this- no space!!)

i have time to wait for a kit if There will be, only proBlem is transportation- just got a smart, but hey!! everything goes with the right spirit and a little afterthought.

//jJ

Sure!..just got to get this thing Done First



Yesterday, 08:06 AM #110 Report
Eli Lipschitz
אָלֶף־בֵּית עִבְרִי‎‎
Joined Sep 2012
20 Posts 3DDF, this thread is not moderatred by you. So no threats on thread rules or anything of that sort.

You need to make it clearer what your intentions are other than making a cool thread, playing with CAD, and maybe impressing girls by saying you "own" a military UAV.

Also without exotic materials, you will have a tough time flying with electric power. Just so you know, 3-4 hours on electric power is a pipe dream. I'm not trying to burst your bubble, just trying to help.

To repeat, please state your intentions. I asked before in another post, and asked above. You seem to want to avoid the issue.



Yesterday, 09:03 AM #111 Report
fallingdown
Registered UserUnited States, OR, Portland
Joined Apr 2011
160 Posts New Rule #2 You must click your heals and say "There's no place like home" and then go into your attic and say "Beatlejuice, beatlejuice, beatlejuice."

Btw, have you guys seen the new Mclaren P1?? Totally sick!

http://www.gizmag.com/mclaren-p1-det...ictures/24335/


This image has been resized. Click this bar to view the full image. The original image is sized 770x577 and weights 60KB.



This image has been resized. Click this bar to view the full image. The original image is sized 770x577 and weights 64KB.

This image has been resized. Click this bar to view the full image. The original image is sized 770x577 and weights 72KB.




Yesterday, 09:20 AM #112 Report
3DDFHobbies
Registered UserUK, Greater London, Hackney
Joined Dec 2010
5,259 Posts Well my intentions have changed now being because of all the Flight restrictions associtated with a model of this size
my intentions are
a 5-10minute flight time at Close Range and the Possibility of a 30min flight time For some FPV flying at the ilse of man... (pretty much deserted So i can FLy Low... And View Rare seabirds and Seals and such)

K



Yesterday, 11:02 AM #113 Report
alfa166
100% crasherSverige, Skåne Län, Hässleholm
Joined Sep 2011
12 Posts Quote:
Originally Posted by 3DDFHobbies
Sure!..just got to get this thing Done First


nice!!, i'm not goinG to do anything else than flying it (no uav/ fpv junK), currently i'm working on a huge drivetrain (10 speed 400 brushed motors in a planetary gearbox) that might be up to the job of hauling such beast in to the air.
as for my skills of building and store sUch huge aircraft i will have to extend my house (200 square meters and a family is not enough!!), building a beast like this with all the Skill it requires is over my top- vacum molding, carbon fibeR etc etc is more than i can handle (cutting and glueing balsa plus some depron to max sixe planes of 2mEter span is what iv'e done so far)

//jJ



Yesterday, 12:26 PM #114 Report
3DDFHobbies
Registered UserUK, Greater London, Hackney
Joined Dec 2010
5,259 Posts Quote:
Originally Posted by fallingdown
New Rule #2 You must click your heals and say "There's no place like home" and then go into your attic and say "Beatlejuice, beatlejuice, beatlejuice."

Btw, have you guys seen the new Mclaren P1?? Totally sick!

http://www.gizmag.com/mclaren-p1-det...ictures/24335/


This image has been resized. Click this bar to view the full image. The original image is sized 770x577 and weights 60KB.



This image has been resized. Click this bar to view the full image. The original image is sized 770x577 and weights 64KB.

This image has been resized. Click this bar to view the full image. The original image is sized 770x577 and weights 72KB.




cool Car! But off Topic!



Yesterday, 12:27 PM #115 Report
3DDFHobbies
Registered UserUK, Greater London, Hackney
Joined Dec 2010
5,259 Posts Quote:
Originally Posted by alfa166
nice!!, i'm not goinG to do anything else than flying it (no uav/ fpv junK), currently i'm working on a huge drivetrain (10 speed 400 brushed motors in a planetary gearbox) that might be up to the job of hauling such beast in to the air.
as for my skills of building and store sUch huge aircraft i will have to extend my house (200 square meters and a family is not enough!!), building a beast like this with all the Skill it requires is over my top- vacum molding, carbon fibeR etc etc is more than i can handle (cutting and glueing balsa plus some depron to max sixe planes of 2mEter span is what iv'e done so far)

//jJ

Wow thats quite some Drivetrain!



Yesterday, 08:03 PM #116 Report
Air Head
Registered UserJoined Jan 2005
1,838 Posts Perhaps you could manage the first thread,

--------------------------------------------------------------------------------

this seems to be a bit unrealistic.

9 gram servos - are you serious?

6 hours flight time with the additional flight pack.

Is this all a joke? Its not April 1st

The payload bay of the Reaper is sized to carry an 10,000 MAh of Lipo's
a second Video Tx and secondary Rx (to pan and Tilt the cameras) and a GPS/OSD with Pitot tube
alongside a BEC and 2200mah 2s Lipo

I have attached

Though i will need some advice for servo's and the Motor
Servo wise i was thinking some 9g digi Metal gear (good enough or do i need more Grunt ?)

Motor wise i need something to swing a 3 blade 19x4 or 19x6 prop on 4-6 cells for long sustained periods of time

any ideas?


P.s im looking for around 3-4 hours of loiter time initially (6 hours with the Aditional Flight Pack in the Payload bay )
Would 20,000 Mah be Sufficient ?



Today, 04:07 AM #117 Report
3DDFHobbies
Registered UserUK, Greater London, Hackney
Joined Dec 2010
5,259 Posts Quote:
Originally Posted by Air Head
this seems to be a bit unrealistic.

9 gram servos - are you serious?

6 hours flight time with the additional flight pack.

Is this all a joke? Its not April 1st

The payload bay of the Reaper is sized to carry an 10,000 MAh of Lipo's
a second Video Tx and secondary Rx (to pan and Tilt the cameras) and a GPS/OSD with Pitot tube
alongside a BEC and 2200mah 2s Lipo

I have attached


Though i will need some advice for servo's and the Motor
Servo wise i was thinking some 9g digi Metal gear (good enough or do i need more Grunt ?)

Motor wise i need something to swing a 3 blade 19x4 or 19x6 prop on 4-6 cells for long sustained periods of time

any ideas?


P.s im looking for around 3-4 hours of loiter time initially (6 hours with the Aditional Flight Pack in the Payload bay )
Would 20,000 Mah be Sufficient ?

Sorry i meant 19g Thanks for Spitting my error though
and if youo read my post the objectives have changed
and BTW the 2200 2s is to run the BEC..



Today, 09:03 AM #118 Report
alfa166
100% crasherSverige, Skåne Län, Hässleholm
Joined Sep 2011
12 Posts regarding servos:
a rule of thumb is as follows: you need servo power equall to the weight of the plane!
so, if your plabe will weigh 10 kg- you need servo power close to 10 kg or slightly less (but for an aircraft this big I for my self would use belt and braces and not go under 10 Kg servos on any controll surface)
also remember that servo force is measured very close to the output shaft (minimal lever= high power)

so I dont really understand you when u say u will use 19g servos- best you would get is 2.5 Kg or so in force, but I think you have been calculating the dynamic loads generated on the controll surfaces and coming up with that 19g servos would do the job?

for the reinforcements with glassfiber/carbon fiber- have there been any stress analysis done so that u now where it might be needed to put this? in order to save weight i would not just put "something" just to say that it's a fiberglass fuse/ wing.

//jj



Today, 10:59 AM #119 Report
3DDFHobbies
Registered UserUK, Greater London, Hackney
Joined Dec 2010
5,259 Posts Quote:
Originally Posted by alfa166
regarding servos:
a rule of thumb is as follows: you need servo power equall to the weight of the plane!
so, if your plabe will weigh 10 kg- you need servo power close to 10 kg or slightly less (but for an aircraft this big I for my self would use belt and braces and not go under 10 Kg servos on any controll surface)
also remember that servo force is measured very close to the output shaft (minimal lever= high power)

so I dont really understand you when u say u will use 19g servos- best you would get is 2.5 Kg or so in force, but I think you have been calculating the dynamic loads generated on the controll surfaces and coming up with that 19g servos would do the job?

for the reinforcements with glassfiber/carbon fiber- have there been any stress analysis done so that u now where it might be needed to put this? in order to save weight i would not just put "something" just to say that it's a fiberglass fuse/ wing.

//jj

i was going to use 19g Digital metal geared Hi-voltage servos with 3.5KG of tourque.. .and yes i have calculated the load.. and it it Within the Planned servos specs..

also i dont quite Get the second part and if you could re-phrase tha would be Great!



Today, 12:35 PM #120Report
Air Head
Registered UserJoined Jan 2005
1,838 Posts Why does everyone need to copy the entire previous posts?

--------------------------------------------------------------------------------

Lots of duplicate car photos here. Id think a reference would be understood.

Need to get out of here - this seems to be a joke to me.

19 gram servos - well thats 10 more grams than the 9's.

What sort of math are you using to calculate the servo requirements? I just cant connect the dots.
Last edited by Air Head; Today at 02:14 PM.


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I wanted to copy the car photos for the third time but do not know how to do it.

Well you may get my point anyhow.

19 gram servos???????????????

Hah!

Maybe you can go back to the post and delete the text to save posting space here.

yes indeed

i used an online servo tourque calculator.. Where you put in A B and C (surface size) and deflection needed.. and it gives you a reccomended tourque..

Sorry to be shooting holes in this but its my enterainment this afternoon.

What sort of speed controller are you using for this 1000 amp burst?

Any link for your servo calculator - somethings amiss

6 hour flight time 3 kg 15 kg 20 kg man this is all over the map. Seems to be a bit scattered and a bit of dreamland.

Your going to make a 5 meter wing and an airframe weight what? Payload ?

Total flying weight? - Every post the data seems to change and I cant see it close to relality yet.

And I Also Enjoy Your Typing With The Caps On Every Word.

What is going on here? - I still think its all a joke.

With zero experience he has to get the data from somewhere. he's using calculators and CAD. Better than I was when I was his age, I did the "that looks about right" type of design and if it worked I was lucky.

Originally Posted by Air Head

...What is going on here? - I still think its all a joke.

Today, I had an epiphany. Finally, I realize what is going on with this guy:

You have to admit, he's pretty good.

Originally Posted by Air Head

Sorry to be shooting holes in this but its my enterainment this afternoon.

What sort of speed controller are you using for this 1000 amp burst?

Any link for your servo calculator - somethings amiss

6 hour flight time 3 kg 15 kg 20 kg man this is all over the map. Seems to be a bit scattered and a bit of dreamland.

Your going to make a 5 meter wing and an airframe weight what? Payload ?

Total flying weight? - Every post the data seems to change and I cant see it close to relality yet.

And I Also Enjoy Your Typing With The Caps On Every Word.

What is going on here? - I still think its all a joke.

im only going for 5 mins flight and no FPV and UAV stuff Due to All the restrictions on A/C this size!

Originally Posted by Depronicus

Today, I had an epiphany. Finally, I realize what is going on with this guy:

You have to admit, he's pretty good.

Edited.. as im not an fool that would fall for your mind games..

Don't worry about it, man. I've been reading through the MD-11 thread, and I think the best way to shut all the haters up there would be to take a bunch of pictures of the plane and post them up aaaalllllllll over RCG so that everyone can see what's actually going on there. All ya need is a camera and a few minutes' time and I suspect they'll be gone forever.

i have attached a copy of the PM i just sent Depronicus
as i, being a Decent person would like to solve the problem the civilised way..

K

and Quite obviously i was Reported by Depronicus

I've been TRYING to focus on the project itself, but I guess I'd like to take a moment to comment on the politics here...

He's clearly only interested in "exposing you" as some kind of fraud or criminal. The only reasons he's gone on this long is because A) he still hasn't been successful, and B) he feels some need to see this through to the end (which he thinks will play out a certain way).

If I were Depronicus, I'd just not bother with it anymore. Even if this all WAS some huge trolling conspiracy, how much good would ratting it out do? Unless he could manage to get you permanently banned, you'd still be free to do whatever you want on the site within rules. I mean, what's next? All the people who support you are also trolls? Am I just some mega-troll that's trolling them, or trolling YOU? The conspiracy theories can spiral around forever and just get crazier and crazier.

Back on topic (sort of): I'd say the first thing to do is take more pictures of progress and such. That's what they're demanding. If you just post up a few pics of the planes you're working on, they can't say boo. Until then... You'll just have to deal with them.

Ill Do exactly that in the Morning!

Looking forward to some progress pictures 3DDFHobbies.