All posts by Darcy

Squirrels in Antarctic Lands

Wenceslas

Meet Wenceslas: He is travelling to Crozet Islands and the Antarctic Lands for a year with a team of scientists who are studying penguins and related.

He will be doing some measurement of seismological activity, magnetic field and manage some electrical systems at the scientific base.

By the way Crozet Islands is at the South end of the Indian Ocean and is a bit closer to Antarctica than to Madagascar!

What an exciting journey!

He’s passionate about his work but spending a year on an island smaller than a city that has no people except a team of scientists needs preparation.

Wenceslas will be bringing a box Squirrel model planes as a diversion and to share with the other scientists. I hope it gets them running around and inspires them!

I can’t wait to get back some reports.

Squirrel Rubber Band Plane on CBC Radio Monday 3:10pm (All in a Day)

Highly efficient elastic strips for Squirrel kits.

Giacomo Panico and I will talk about the Squirrel project this Monday (July 23) on CBC Radio.

It’s hard to say what questions will come up so I am bringing a few things to show Giacomo. I’m posting the pictures here so you can see them in the event we discuss them (also incase my friends can give me more ideas).

I’ll take a few more pictures during the interview and write a report about the experience later.

I’m bringing some of this special elastic band (right). This stuff is procured in 10-20lb increments. It is stripped down by a machine (called a stripper). It is then cut to length for the Squirrel kits.

For loads of excitement you can see how the elastics are cut to size.

Box templates made from reused cardboard.
Detail of box templates.

I’m bringing some of the boxes that are used to share the Squirrel model airplane all over the world.

The raw cardboard is collected at places such as Grace Ottawa, cut into blanks to fit the “box-o-matic”. The box-o-matic then cuts the blanks into templates. This system works using robotics to move a cutter around to save the labor of cutting the box (aka CNC). You can see the box-o-matic during testing and starting to cut a box.

It can make 100+ boxes per hour of operator time.

“Reverse clothespins”.
Squirrel kits!

These boxes have features that allows them to be assembled using “reverse clothes pins” (right). They can be glued at the same time the boxes are loaded with Squirrels (left).

The Squirrels themselves have been packaged very light using only the instruction sheet to give the package rigidity. Quite a bit of effort was made to get the instruction sheet onto a single sheet to keep the weight of each Squirrel under 20g.

“Peace Plane”. It’s a paper plane that forms a circle.

Also you can make this really cool “Peace Plane” from the instruction sheet when you’re done. There are instructions and a downloadable version.

There are many steps in the making of the Squirrel kits but one of the more exiting steps is the cutting of the small parts from balsa using a laser beam controlled by robotics (CNC). If you follow the link you can see what this process looks like.

Shipment for Dinkar (school teacher in India).
Just in time box assembly.

I’m also bringing this shipment for India to the interview. This shipment is for my new pen-pal Dinkar who is a school teacher. I have been making regular donations of Squirrel kits and other stuff for him to share with the kids and for his own fun and exploration.

Notice how the box is glued and clamped at the same time it is loaded. I used to make the boxes and then load them when needed but then you have a pile of boxes instead of a pile of templates to deal with.

Also notice that I am sending him unpackaged Squirrels to save on postage and of course the environment. This allows me to keep Dinkar’s supply up to speed without going broke on postage. 🙂

The Lloyd Shales “Minnow”.

Dinkar was interested in the Minnow which is another simple model plane made by Lloyd Shales. It’s a good next step after you’ve made a few Squirrels. I had sent him one before but it did not survive shipping.

I’ve been donating my Squirrel kits all over the world including to DND (who sends them to Afghanistan and Sierr Leone), Brazil and Pakistan. Also locally to Big Brother and Sister, Boys and Girls Clubs and also kids I recruit myself. Some adults too.

More recently with Dinkar a couple of my friends and cousins started to pitch in. This is exciting because I’m not just sharing my own creation but I’m sharing the sharing.

I’ve also made a list of a few things to talk about (as if I could run out in the 20 minute or so interview). 🙂

Here are some of the things I’ve done and enjoyed about the Squirrel project.

-Don’t patent your project. Share it.

-Be kind to your fellow humans and planet.

-If you share a lot you will meet new friends. I now have pen-pals all over the world to collaborate with.

-I’ve moved away from being a software developer and towards being an inventor and an artist. I’ve worked on some cool projects and commissions including a robot that can draw portraits and an upcoming art installation that has artificial vision so it can detect your expression and respond.

-I’ve learned more about simplicity and accessibility. These concepts helped me succeed in software development but I’ve now refined the process of simplifying and verifying design.

-I’ve become involved with the “maker movement”. This is a movement back to making things that values sharing and open source. I’ve met many new friends as a result of attending events and the Blog-sphere of this movement.

-I’m going to try and finish some more of my model airplane designs this summer. That’s lots of work. If you want to attend some of the workshops where these designs will be tested contact me!

Peace Plane

A paper airplane shaped like a circle.

Paper planes are easy-to-make and you don’t need any special materials.

Here’s a really cool paper plane of mine (right). You can download a template to make the Peace Plane.

Below are are videos on making and flying the Peace Plane.

If you don’t have the template make the three folds like this:
-One Inch (from edge)
-One cm  (from edge)
-Bisect the remaining distance

I always bring a few sheets of paper in my brief case and some colored markers.

Kids can decorate them with markers, stamps, hole punches and such.

Paper is pretty easy to deal with as it can be torn and cut with scissors. I suppose you could also add glue and tape to the mix but then it’s considered a model plane. 🙂

On the downside, they can’t fly as far as a model plane. Also they are not as stable a platform to learn about trimming and aerodynamics because they are so flexible and structurally unstable.

But you can deploy paper planes in a wider variety of social situations. Pubs, night clubs, dance halls, cafeterias, restaurants, I’ve done it all.

This things will rescue any social situation that has gone sour.

To learn to launch it you can study this video:

 

 

Squirrel – Rivals AMA Cub

Foam Squirrel flying high! Photo courtesy of Gary Hinze.

I designed the Squirrel back in November 2004 (ending during the holiday season). I wanted to make model aviation more accessible through more elegant and efficient building practices.

Squirrel is now built in most countries around the world. There are designs based on it and designs that borrow it’s unique design choices.

The Squirrel is an excellent flyer so write your name on it and put on your running shoes!

Here is a summary of the beginner models that came before the Squirrel.

AMA Cub (AKA Delta Dart)

AMA Cub built by Darcy and neighboring children.

Designed in 1967 by Frank Ehling, the AMA Cub (Academy of Model Aeronautics) had become the most popular beginner model.  A great starting point for building one is endlessLift or Bill Kuhl’s Dart Page.

The AMA Cub takes 3-5 hours to put together. They fly well in both indoor and outdoor environments.

Builders will need a cork board, wax paper, white glue, hobby knife, sand paper and pins. The kit calls for a pin to hang the rear of the rubber motor. This doesn’t work well so if a proper wire hangar is to be made, they will need safety goggles, music wire, pliers and wire cutters.

There is also an AMA Racer which is a slightly more advanced version of the AMA Cub.

MAAC Dart

This is the Canadian version of Frank Ehlings model. They are sold by Model Aeronautics Association of Canada (MAAC).

BMFA Dart

The BMFA one is available at British Model Flying Association.

Denny Dart

A great design by Neil Dennis.
This plane is documented at endlessLift Denny Dart and also Building Model Airplanes From Plans and Materials by Bill Kuhl

This one takes a couple of hours to build but flies even better than the AMA Cub.

Canarsie Canarie

Canarie planes built by children with Darcy and Anabel.

Designed by Don Ross, it is built from solid balsa sheet. Flies well with light balsa (or contest balsa). It is featured in Don Ross’s book “Rubber Powered Model Airplanes”. Plans are also available from Don Ross.

Don has come up with some innovative techniques for building. On this model the gull wing system is very convenient!

The Canarie goes together very fast but requires contest grade balsa to fly really well. In workshop environments, kids tend to break the gull wings during construction so premaking the wings is a good idea for children. The wire rubber hangar at the back is also good to premake since wire cutting bending and fastening is tricky and is an eye risk.

Canarsie Courier

Also designed by Don Ross. It’s an excellent outdoor design. Also from solid balsa sheet. Everyone should build a Courier!

Again, there are some amazing and innovative construction techniques. He has come up with an under cambered wing with a minimum of parts and steps.