Instructables

IOS/Android Remote Controlled Blimp With Video Feedback

Featured

Step 3: Mass and Lift Capacity

Picture of Mass and Lift Capacity
IMG_6814.jpg
IMG_6815.jpg
IMG_6816.jpg
IMG_6818.jpg
IMG_6817.jpg
IMG_6819.jpg
IMG_7079.jpg
IMG_7076.jpg
IMG_7075.jpg
IMG_7006.jpg
IMG_7005.jpg
IMG_7004.jpg
IMG_7001.jpg
IMG_7003.jpg
I started out weighing the WIRC set as a whole and each main component, the camera being the heaviest. But the camera has this lumpy plastic clamp of which a part can easily be removed by loosening some screws. Actually the packaging and cables show a lot of potential to hack them and loosing a lot of weight. But I decided not to do that on this first build, not risking the system not working properly anymore. I plan to do that on a second WIRC.

So I ended up with a control and video feedback system just under a 100 g.

Then I weighed the other RC components: servo’s, batteries and extension cords and everything together. Note that at that time I was still thinking to use a fourth servo (the white one) to tilt the camera, which I later dropped to keep it simple. I was at 172g

I pre-inflated the balloon with air to its desired size, which was determined by the maximum diameter still passing a common door. I tested a plastic clamp holding it closed and not being very impressed with it decided afterwards to use some string.

I left the air out and put in a good blob of “Hi-Float”, rubbing it out al over the inner surface. Then I inflated the balloon with helium to the same size again.

I checked the lift capacity by subtracting the weight from the ballast with the balloon pulling upwards from the weight when holding the balloon down by hand: 260g. So there was still plenty of room for the iris, a frame, small parts like the propellers and margin for loss of helium over time.
 
Remove these adsRemove these ads by Signing Up
fraenzaen7 months ago
Hi nice project! Often thought of something like this. Didn't know that a small baloon is able to carry that much weight. Should have calculated or tested this.
masynmachien (author)  fraenzaen7 months ago
As a rough estimate one liter of helium at atmospheric pressure carries one gram.
Pro

Get More Out of Instructables

Already have an Account?

close

PDF Downloads
As a Pro member, you will gain access to download any Instructable in the PDF format. You also have the ability to customize your PDF download.

Upgrade to Pro today!