The new design of the Mugin UAV 3M is out.

It's a huge UAV platform with 300 mm wingspan. The platform caters to larger UAS projects such as universities or commercial projects. It's really not a beginner platform.

 

The platform is available here: Mugin UAV 3m vIII

It comes with or without engine/prop.

 

 

Twin Motor

Type: Two-stroke piston valve petrol aircraft engine
Displacement: 55cc(27.2ccx2)
Bore x Stroke: 34mm×30mm
Carburettor: Walbro(Diaphragm & Butterfly Valve)
Max. Output: 5.6ps/7600rpm
RPM Range: 1600-7800rpm
Weight: About 1780g(Engine+muffler+CDI)
Ignition power: Auto advanced CDI(DC 4.8 Volts , 4 cell NiCad or NiMh battery)
Fuel mixture(Ratio of gasoline and oil): 25-40 : 1
Propeller: 20X12-23X8 two-blade prop( suggest to use 22x8 prop)

Views: 12642

Comment by Matt on June 23, 2013 at 4:36pm

@eduardo I see now. I just looked at their site in a hurry to see! lol. It looks so much better with a V-Tail like yours. I didn't realize how big that thing was until you was sitting next to it! Really put's things into perspective! How long did it take to get it shipped to you?


Developer
Comment by Andrew Tridgell on June 23, 2013 at 5:35pm

Hi Eduardo,

Can you have a look at the aileron hinges on your new Mugin and tell me me if they have proper hinge seatings in the wing. On the Mugin we used in CanberraUAV the aileron hinges went straight into the fiberglass of the wing, which meant you had a metal on fiberglass hinge, and the fiberglass quickly wore away. That resulted in the ailerons getting looser and looser as the fiberglass wore away. We almost lost a plane because of this. We ended up replacing the hinges, but it is not an easy job.

The nose landing gear looks a bit better in this version. The previous version broke very easily, and we had to replace it several times.

The main landing gear looks similar to the old version, and if so is probably too weak. We ended up replacing the whole of the main gear with much thicker aluminium which we got made up at a local metal working shop. Before that we found the fuselage would start cracking after a few landings.

One disappointment is they haven't added flaps. The Mugin lands very fast when you have lots of gear in it, and we found our 120m runway was really too short for comfortable landings.

Cheers, Tridge


Developer
Comment by Andrew Tridgell on June 23, 2013 at 5:43pm

Hi Eduardo,

What is the nose wheel strut made from? Is it metal or fiberglass?

I guess the main gear is fiberglass like it was in the previous version?

Cheers, Tridge

Comment by ECODRONES on June 23, 2013 at 6:35pm

Eduardo, enviado e-mail @hotmail.


Admin
Comment by Morli on June 23, 2013 at 7:53pm

No Flaps!!  , did not notice that.:( . A must for this size IMHO.   120m runway?!! is too long , even for 20 k.g airframe. may be fitting a Hook will do the trick.

Hope all the issues mentioned by Andrew have been rectified in this new version.

Comment by eduardo on June 24, 2013 at 4:49am

@Andrew, the nose wheel is made of fiberglass.

Andrew, you tried to mix FLAP to ailerons ? not too much but some degree to help in landing.

I will look on aileron hinges as you tell.

BTW, you are using two fuel tank on canberra ?

If yes, have you any trouble with pressure ?


Developer
Comment by Andrew Tridgell on June 24, 2013 at 5:14am

Hi Eduardo,

hmm, fiberglass nose wheel strut - not good. I suspect a lot of people would be replacing that. A bit of spring steel would be a lot better. Is the place it attaches to the fuselage nice and strong?

We didn't try flaperons, as we were concerned it may tip stall. Have you flown it with flaperons? Is so, how many degrees?

We used a 3L main tank, and a small (200ml?) header tank. Before we installed the header tank we had a lot of problems with long flights. The fuel foamed up too much.

Cheers, Tridge

Comment by eduardo on June 24, 2013 at 5:46am

Yeap .. i asked you about fuel tank because i suspect i will have the same problem.

I will use a 2oz tank to solve this problem.

I will put the mugin pictures in my blog today so you can see all details.

Nice to talk with you here.

I am tried to send some mail to canberra group without success.

Comment by eduardo on June 24, 2013 at 5:56am

@Andrrew,

do you remember about mugin endurance with 3000cc ?

How much weight you need in cargo bay to get a correct CG ?


Developer
Comment by Andrew Tridgell on June 24, 2013 at 6:00am

@Eduardo,

About 90 minutes, with plenty of fuel left, at about 32m/s cruise speed. We had a takeoff weight of around 17kg or so.

We needed a lot of weight in the nose - we actually used a big lead-acid battery in the nose to power our electronics, which also acted as ballast!

Cheers, Tridge

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