Electronic Circuits and Projects Forum

Hello all, my first thread here.

I am interested in making a small, lightweight noise generator, amp, speaker circuit for a radio-controlled jet. I am hoping to use some of the components from those musical greeting cards if possible.

Does anyone know how to do this? I am a complete newbee to this stuff but am a fast learner with some help.

The plane will carry an 11.1v battery or the device could have an independent power supply if light enough. Here is a photo of the "jet" almost complete.

Any help would be much appreciated.
FMD.

Last time I heard a brushless ducted fan, it sounded very much like miniature turbine.
The only difference is inertia (they can trottle up and down much faster that real turbine) and sound intensity. But as the plane is typically smaller, the illusion is quite good.

Here's a little more clarification.

The "jet" is powered by a small pusher prop on a brushless motor mounted on rubber bushings... pretty quiet.

The speaker will be housed within the fuselage but instead of holes to allow sound to pass I was thinking of a taut plastic film over the speaker housing. May even amplify a bit like an acoustic guitar.

As far as the characteristic sound of a real turbine that would be ideal but to sample that and utilize would require a loop... not feasible. So, make a jet sound when you play with your kids. Bet it sounds like static noise that trails off as you run out of breath. The key is the doppler effect as the plane goes by.

So what I am after is noise, small, and simple. Hope this clarifies things a bit. I've been reading about zener diodes, rf noise, etc, but the learning curve is steep.

Thanks,
FMD

Originally Posted by audioguru

Why make a fake jet airplane?
Use a real little jet tubine then the noise and smell will be real.

Why use a little jet turbine. Use a real jet fighter. Both are too spendy $$$$!
FMD.

Originally Posted by audioguru

On the internet there is a huge model jet bomber with 8 small jet turbines. It shows it crashing.
Each model jet turbine engine costs as much as a small car.

this?.....

That would be tough to lay out that kinda cash and have that happen. Quite a few hours in that build too.