₦airaland Forum

ridwan249:
I really appreciated dis project.,u make it real.wat will be d total cost of d project. Wnt to work on dis project incorporated with phone control system....to work as spy system.

The total cost would depend on how exotic you want your flying envelope to be.
If you need an RTF heli(Ready to fly),then you can get a 450 size which is similar to the one i built at $599 this will include a Tx and Rx.
But if you are on a tight budget,you can get the 450 helicopter kit from hobbyking.Com at $216. Mind you,this kit doesnt come with a Tx,rx,brushless motor,Esc,gyro and servos. You would have to buy them as an acessory.
So,excluding the Tx and rx,these required acessories should be around 15,000 naira.
You can get a Tx and rx for as low as 5,000 naira,or you can opt for a programable tx. Depending on the brand,you will get some at 30,000 naira or a futaba 6J,at 38,000 naira.
I intend to sell my heli parts,as i am going to get another one pronto,just needed some upgrade. So if you do need any parts,you can contact me via my number: 07015387845.

farouksanusi82:
[sup][/sup]how kan i get d material

I have a guy that sells it to me when it is available. Your location might be further away from mine so you can get it from those peeps that fix masts for Mtn,glo,etisalat etc. The will have the flat ones which is what you need.

Your inverters are costly. Why would i buy a 1.5kva inverter at 175,000, when i can get that here for just 65,000 naira? Its a wonder where you guys get to acquire you stuffs. Way too costly i would say.

Teempakguy:
i think the universe is in more than 3 dimensions, just like a pool of water, the part we can see is just the surface, the deep, just like dark matter, can't be seen. just like the deep, they are not affected by light because they are not on the surface. . ..

the dark can't be seen because the light that travels through it never get reflected. We see by reflection of light.
The question should be, are there no objects further to reflect the light,or is it that the light couldn't get any further.
Or perhaps the aliens could answer that(if you believe in ufo). I do.

For now,i am becoming good on the simulator.
The simulator i am using is Fms. It is a freeware stuff,you can download it @ www.Modelsimulator.Com

The result was awesome. The thrust was much that the airplane lifted about half a foot off the ground. Unprepared for a maiden(first flight of an aircraft),i brought down the throttle and the airplane landed hard on the ground. I had a friend to video the scene. It was done with a high resolution camera,eventualy the size is too large. I can't afford to upload a video of such size. so i want to convert it to mobile mp4 and 3gp. I shall upload it soon.

After the modification,i spun up the setup. It wasn't bad..
I would know if it was bad,after a thrust test. So out to the field i went.

I went back to work.. After tearing the propeller apart,i installed a plastic propeller i had had sometime,on to the aluminum prop,thus making a four bladed propeller.
Meanwhile,on my previous test with the aluminum prop,i had noticed that the motor didnt get warm at full throttle,thus ruling out any fact that the prop was overloading the motor,and giving a strong indication that more prop could be attached. This was why i went ahead to make the prop four bladed.

Next,i installed my scratchbuilt aluminum propeller. Spun it up,and the thrust was awesome,or so i thought.
Then i went for a thrust test in a nearby field.
Although i was happy at the thrust,i was still a bit hungry for more propeller power,and was dismayed somewhat.

After finishing the build,i tested it by spining the setup at high throttle. A little noise indicated tight gears meshing,and the need for some clearance between them.
I gave it a little clearance,and spun it up once more. The sound was gone.

I proceeded to build the step down gear.
I used a gear i got from a standing fan.
This gear has 60 tooth,and the pinion gear on my motor has 13 tooth. That is a ratio of 4.6.
So with a 3800kv motor,rotating at around 45,600Rpm,the gear shaft which is my propeller shaft will be rotating at 9,913Rpm,that's decent for me.

It depends on what you call irresistable and immovable.
But if i were to say,i'd say there would be an irresistable immovable force.

After my research,i came to realize that i was running my prop at too great a speed,and it wasn't efficient at that speed,instead it was a hell of a load to the motor,and was causing a near stall,that was why my motor ran hot. Needful to say that,my motor has a kv rating of 3800kv. Which is to say that,at 1 volt,it rotates at 3800rpm. At 2 volts it rotates at 3800 times 2,and so on. So at 12 volt,it rotates at 45,600rpm. That's too great a speed for a prop. The tip speed of the prop would be exceeding the speed of sound (mach 1) at that rpm.
So i needed some sort of gearbox to step the speed down.

I went back to work. I decided to build another propeller out of aluminum. It measured 7" from tip to tip. I then gave it an angle of 20 degrees towards the hub,and 10 degrees towards the tip.
After other itineries,i spun the prop. It spun up nicely without much need for balancing,owing to the fact that i was precise with my calculations and cutting.
Next,i hooked it on my airplane for a thrust test.
This time,the result was reassuring but still not enough for the 1kg craft. More importantly was the fact that the brushless motor felt very hot. This was an indication that the prop was imposing alot of load on the motor. This baffled me because i had a 120watt brushless motor,and it ought to furnish me with enough power to fly my craft. But it didnt instead it ran hot. I had a feeling there were a great deal of inefficiencies in the system.
I left it at that stage,and went ahead to do a little research.

I did a taxi test run,to see the thrust of the propeller.
I noticed the thrust wasnt enough for a 1kg airplane. So back home i went.

You leave no clue to what you are explaining. Little wonder nobody has quoted anything in your thread. From the look of it,it smells of fraud. I think you should better close this thread!

redfigure:
Ive been following your thread.
First of all, NICE WORK.
From my thesis, i dont think it will fly well, cause of the width. I think you need a thin material.
Just contributing
Good work

The width aint that much. Besides i've rounded the leading edges and tappered the trailing edges with a sandpaper. So the wing has an airfoil profile currently. I shall post pictures of it.

zeanslim:
still following, how long does it takes to charge your batteries full ?

.Around 50mins.

Here's the airplane awaiting its first test run.

After all,i made a go at the batteries by charging them. I charged them separately,and waited untill the third cell was charged to the full,then i got set to do a taxi run test.

Here's my programable lipo charger .

A view of the side of a soldered end

Then i soldered a wire from the negative terminal of the first stack of li-ion cell,to the positive terminal of the second stack of li-ion cell.
Therein after which i then soldered a black wire for the main negative wire. The red wire is the main positive wire.

I starte by soldering a wire from the negative terminal of the lipo,to the postive terminal of the li-ion cell.

You can email me on kingsleyobinna26@yahoo.com if you have a personal enquiry.

Those li-ion cells were gotten from a laptop battery. In the pix above,i paralled the li-ion two,two to give a capacity of 4400Mah.
So with two 4400Mah li-ion cell,and one 3600Mah lipo. I can make a 12v battery bank by connecting the lipo and li-ion in series. Charging them would be done one by one and separately,with a power source charging each one with 4.2v. They can never be charged as a bunch at once,with a 12v power source as a charger..

Below are the cell. The lipo are the white cell. The li-ion are the cells that looks like a normal finger battery,nickad or Nimh batteries in the picture.

After crossing the T,doting the I and grouting the tiles,it was now finally,time to make my batteries.
I am using the word "make" because,i am going to build a battery from a combination of batterries.
I will have to do so because i those are the only batteries i could lay my hands on at the moment.

So at the moment,i have 4 lipo batteries,rated at 1800Mah 3.6v. I am using two of these to power my Tx. So that leaves me with 2 lipo cell.
On the other note,i have a couple of li-ion cell. About 4 of them,with a rating of 2200Mah 3.6v.
I needed to make a 12v battery for my airplane from a combination of those aforementioned cells,owing to their high power to weight ratio.
So here is what i did.
But before i proceed,i would like to caution any one attempting to do this.
PLEASE DO NOT CONNECT BATTERIES OF DIFFERENT CAPACITY IN SERIES.
Don't try this at home or in a lab,not unless you have a good knowledge of lipos and li ion batteries.

zeanslim:
I'm also trying to work with laser and laser trip alarms

it will be nice equipping this flying babies with it..

any idea about that too ?

I don't get the drift.. Why equipe one with a laser alarm? Do you intend to detect objects,as in a radar concept?

Do i need say that,it comes with a 100Ah 12v deep cycle battery..
Certainly it does.

timmy2409:
Anywho, keep up the good work. I'll be following.

Ok,thanks man.

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