VEHD 150-5: Build a Helicopter with Two Working Rotors



Make a Helicopter with ATOMS!

In this class you’ll build a helicopter with two working rotors.

Parts Used:

Related Attachments:

 

Follow the instructions [pdf]

VEHD_150_5_Helicopter_LEGO_Build

 

 

Refer to the wiring schematic [pdf]

VEHD-150-schematic

 

Challenges:

See how you level up against professional engineers, designers, and inventors!

Challenge 1:

Build a twin-top-rotor helicopter, like the CH-47 Chinook. Email the picture, your first name, home town/state, and a one-sentence description to us at university@myatoms.com.

Pictures will be displayed on the class gallery below.

heliC1

Challenge 2:

Modify your top rotor, and measure how much real lift you can generate.

heliC2Here’s how you go about it:

First, modify your top rotor using cardboard, tape, and LEGO. Hint: your cardboard rotor blades will need to angle up to deflect the air down. This is called the blade’s “angle of attack” or pitch.

Second, measure the static (non-moving) weight of your craft using a kitchen scale, and write it down. Use metric units – grams. We got about 202 grams. You ideally want a scale that’s not much larger than your craft. This one on Amazon is inexpensive and a good size.

 

Here's a picture of the underside of the rotor we used in the video. We used 2x8 LEGO plates to provide a better mounting surface for the cardboard, then used tape to fix the cardboard on.

Here’s a picture of the underside of the rotor we used in the video. We used 2×8 LEGO plates to provide a better mounting surface for the cardboard, then used tape to fix the cardboard on.

Third, spin your rotors up and measure how much lift or thrust you can generate. As you increase the speed of the rotors, the weight of your craft should go down. The amount of lift will be the static weight of your craft minus the lowest weight you can get.

Experiment with different rotor designs, motor power (knob setting), and gear ratios.

To submit, post a video of your experiment to your favorite video sharing site (i.e. Facebook, Vine, etc.), and email us the link along with your first name, hometown/state, and the amount of lift you were able to generate (in grams)… email submissions to university@myatoms.com.

Class Gallery:

Challenge Leaderboard:

VEHD-150 Class 5 Lift Leaderboard

Name
Hometown
Level
Date
Record (grams)
Picture/Video
Be the first!

ATOMS University > College of Engineering > VEHD 150: Intro to Drivetrains > Class 5: Make a Helicopter