Latest update on things: DefianceDevelopementThread
Hi guyz, its been a while since i reported back about my enthusiastic project, 'In search of design functionallity'.
Time has come to show you what i've been working on for long time, i'm very excited, the jurny was long and dreadful but every second of it was worth it.
Main design goal;
- compact and functional design
- protection of all electronics by the airframe body while keeping them accessible(armor tanked)
- usage ergonomy, easy to maintain (wiring and electronics)
- optimal electronic placement, to achive healty working enviroment for all components by keeping them away from eachother to prevent mutual EMI. (flight control, videio transciever, radio reciever, power distribution, esc, both vtx and rx anntennas, camera)
- stable and lock in flight characteristics (achived with central COG on all axles by symetric motor placement and centered component placement on vertical axis)
- an airframe that provides easily achivable clean build
-great battery fitting capacity
- fully optimized for both 5 and 6 inch propellers, 3 and 4s powersystems
- great orientation propertys, serve as both, an LOS skill training model and full blown fpv beast, also easy to spot for the spotter and in fpv racing
- frame profile designed to take a beating, able to translate direct frontal crash at 25degree into rotational force to dissipate impact energy and incrise model longevity
- sensible engineering, usage of right materials in all the right places, g10 where RF transperancy is desired and true 3k carbon fiber only where its needed.
- light weight
- high quality
- fair pricing, affordable
- available
Few renders of an actual assembly model
Here is the latest screenshoot from actual model assembly file
I'm looking foward to your thoughts and suggestion
You can also follow up my thread about it on fpvlab, but i'm more than happy to answer all Q&A here too.
Update:
New feature - adaptable motor protection
A few people suggested some form of motor protection so i designed an adaptable motor protection giving the pilot a choice of motor protection 'level' he feels most comfortable with.
Arms have 'teeths' providing great distancing of motor bell from the edge of an arm, however it is possible to install protective rings wich give additional protection along motor vertical axis. The same mount holes can be used to install landing gear as well.
While obvious that teeths are most effective during crashes on solid ground, the protective rings make it more secure for most ground types.
Enough talk, few screenshoots :)
As always, looking foward to feedback:)
This is the final design assembly file screenshoot, features few construction updates that provides great ease of us, maintainance and structural reinforcement for 6incher powersystems.
More about those updates at: Defiance Thread
New update on things, I've posted first Defiance prototype build photos, heres a link BuildPhotos.
Comments
I've added a picture of current prototype at the beginning of blog, was just testing out build ease and made few shoots, theres more on my Defiance thread, link to it is in the thread, enjoy:-)
I've implemented new feature into the design, adaptable motor protection :-)
You can view few representative screenshoots at the bottom of this blog.
Ravi, i'm really glad you like the Defiance, it will become available soon and it will bedistributed by upstanding company, their quality, shipping speeds and customer support are the best in business! I cannot tell the date for sure but it will be quite soon. :D
@dragan, if you make the frame on CNC make an extra one, i will like to try one air frame. ofcourse i will pay you for that.
Forgot to mention, you can remove hard mount for camera to allow mounting the cased camera with its holder.
Mp1, i understand what you saying, for this purpouse i've implemented a hole for mounting cased cameras with their brace holder, youn can fix the camera brace holder with a screw and adjust preferable angle for you preferance. But yes it is true you can't install tilt servo on the airframe.
Hope it helps:-)
Ben Berrey, i'll take you aren't informed well and i see why it got confusing since BlueSky Wasp 280 looks veru close to Defiamce airframe. Allow me to tell yoy the facts and i'm certant you can see for your self that this is far far from Clone, this is actualy the true origin, i'm the one who developed this solution.
First, I've been working on this project for 3 years now, Defiance is sum of my research.
Second, i've publish my study right here on diydrones to hear what ppl think in February this year. http://diydrones.com/profiles/blogs/in-search-of-functionality
Thrird, Bluesky Wasp 280 was release 3 Months after. I instantly recognized my solution right there in front of me, hek i even went to that thread to welome design adopters.
Forth, Before you go on another crusade on Bluesky be aware that i personaly said in my design publication that i hope my research will at least serve as inspiration to others. Bluesky Rc completely showed me respect as fellow designers, they liked the solution, took what they liked the most about it but most important they did all the engieering of their own variant. They did not mention me but then again i never asked to get credited to begin with!
@dragan
I think you missed the point. I meant having the option to put a simple tilt mechanism for your fpv camera, should be supported. Im not talking about flat never tilting camera mounting, thats all fine but when your zooming about in a 250, the faster you go the more your camera is looking at the ground coz of the angle rather than directly in front. Thats the problem the tilt for the camera solves.
..... i would have to say. this looks like a clone of bluesky's wasp frame, and frankly, i believe flying wooden frames for vibration damping is a world of difference compared to full carbon. Let alone in a crash the chances of bending a motor shaft rather than just replacing a arm is very high.
My 2 Cents
Ben
Hi guyz, srry for keeping you waiting, i just got back from work and will try to adress all of your questions now.
Just wanted to say, thank you all for the kind words guys, it means a lot to me :)
I've already answered Tearig's and EngineerX's questions on fpvlab with exception of the mobius mount suggestion.
EngineerX, yes i will design a solution for mobius altho this was always about pure fpv enthusiast flyer airframe, no hd cams maybe mobius. But first goes the airframe, later comes upgrades that make defiance quite versatile airframe enabling the pilot to further optimize the airframe in direction he wants.
no spoilers yet :)
Quadzimodo,
I use Autodesk Inventor software. The reason is simple, this is a true proficient engineer tool. I can design parts, assemblys, assemblys of assemblys, simulate mechanics, do stress analysis, cog etc..
In short i like it very much and it served me really well in the past.
Mp1, Basicly you have 2, soon 3 ways to mount an Vtx antenna.
On predicted pig tail mount location at the top is one, however you can also connect it directly to Vtx and secure the area at connector with zip tie to provide additional support, there are designed slots for a zip tie at that area.
This means your top mounting plate is clear for mounting the gps, however it is wise to consider that this is a mini airframe and that you can get as much gps efficiency as it is possible.
Regarding carbon fiber, in the renders that was just the texture to make it look more photorealistic, as mentioned in main design goal list, sensible engineering was applied here, everything except the motor arms is a g10 material, an RF transperant one.
I've gone all extra miles to design the 'Control&Vision Feed Bridge' to be as stiff and ridig as possible, belive me you will be suprised how strong and stiff it is despite being made of G10 material, no movement possible what so ever.
I guess when you think about it, motor arms are actualy only part of the airframe you want in CFK, and for its propertys mostly not the light weight, its just a small bonus.
However i found a better way, another space age material that saves a lot more weight then if entire frame would be in cfk, this will be offered as an upgrade one day if i justify costs to the company im colaborating with. no spoilers yet either :)
It is my belife that carbon fiber is just a 'cheap investment way' to give masess a light weight solution despite cfk beeing completely oposite of designing an fpv aiframe, best signal possible is the highest priority among other things.
As you might be are aware i'm not doing this for profit but for a true gain to pilots, you will realize this when you see the quality of the airframe and the price for a kit. However I can do as much for all of us as i get supported for
Reqarding camera tilt servo, once again this is pure Fpv optimized airfame, sure you can strap a key chain camera or even mobius but i imagine it to be so you can look you flight videos for personal enjoyement or flight analysis, you can do this via dvr too.
There are plenty HD camera aiframes, this one will have an upgrade that enables you to have it too but main focus in on having a realiable fpv machine for your personal enjoyement, not so much about the after videos.
Again i really appricate your input guyz, it helps a lot and is very appriciated! ;)
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