bzupke製作了一台樂高RCX飛船，用樂高馬達來控制飛船的行進喔！
作者把氦氣灌進垃圾袋裡，真的是超大台的！
來看影片吧！
下面是作者詳細描述這台樂高飛船的裝備：
Using an RCX, 3 Motors, the Infrared Remote, Large trash bags, and lots of helium, my son and I created a steerable blimp.
Two of the motors controlled propellers (made from a LEGO propeller with larger blades made out of packaging plastic). The third motor controlled the tilt of the two propellers.
Each propeller can be separately controlled. For example, to rotate the craft, one propeller would be driven forward and the other backward.
Metal washers were used as ballast to try to achieve neutral bouyancy so the propellers could be used to raise or lower the craft as well as move about the room. Helium leaked out of the trash bags fairly quickly so the ballast and to be frequently adjusted.
With one load of helium, we had about 2 hours of flight time (starting with a lot of ballast and then removing it bit by bit over the two hours).
The use of the Infrared remote was a bit of a challenge as the controls were not very intuitive (e.g., frequently tilting the rotors in the wrong direction). Also, maintaining the line-of-site needed for the remote was a challenge.
In my next version, I'm planning to make the following changes:
- Use an NXT instead of an RCX and use bluetooth to remotely control the craft.
- Set up more intuitive controls.
- Replace the trash bags with one large mylar envelope. This should greatly increase the flight time from hours to days or even weeks.
- Set up one of the propellers to have the opposite pitch to have the two props cancel each other out when spinning in a vertical position.
- Add sensors and program the NXT for independent control.
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