Pursuit of Flight Kinetic Sculpture


Hey everyone, Jason here. Today we’re going to take a look at my latest kinetic sculpture, which is this model of two
airplanes flying over a country landscape. And before we jump into it, I
have posted this project to LEGO Ideas as I think it would make a pretty
interesting and unique LEGO set. It has some really interesting movement and I think it would make a pretty cool display model. If you agree, you can head
on over to LEGO Ideas and with your support maybe we can make that happen. So let’s take a closer look at the model. The planes are mounted on these
transparent bars, which tilt from side to side as you turn the crank, and as they
do so the roll of the planes changes as well which gives a nice little
impression of them flying through the air. You can also manually control the pitch of the planes just by tilting them forwards or backwards. The planes and the landscape can be easily customized. In the introduction I had the Sopwith Camel and the Fokker Dr.1, which of course is a classic World War One
match up. And here I have a couple of mono planes I’ve been working on. Bonus points
for anyone who can guess which ones they are. Of course you can build and display
aircraft from any era or even birds or spaceships and decorate the base to
match. So how does the mechanism work? We’ll start with the support rods. Here I
have a simple set of beams set up in the shape of a parallelogram and as I tilt
the lift arms from side to side, the opposite sides remain parallel, but if I
shorten the distance between the pins connecting the tops of the lift arms, we
now have a trapezoid, and as I tilt the lift arms from side to side, that top
beam will also tilt which is what gives the planes the nice little roll as they
move from side to side. The geometry is the same in the final model, I’ve just changed the lift arms to these transparent bars and connected some
Technic pieces onto the ends of them. And we can control the angle of these bars using an axle connected through the base of one of them. To do that we’ll add
a rod to the end of that axle, and then we’ll connect the end of that
rod to a crankshaft through a piston. So that as we rotate the crankshaft, the
piston moves the rod from side to side which transfers the motion to the
support bars. Now we can just duplicate that whole mechanism for the other plane. And if we offset the cranks driving the pistons by 90 degrees, then the planes will fly out of phase with each other. Which gives the impression that the one
in the back is chasing the one in the front. And in the final model we’ll just add a couple of gears and a crank to the end of that driveshaft. So that we can easily power the model by hand. And that is about all there is to it you can find a link to the LEGO Ideas project in the description or somewhere on the video. Once again I would greatly appreciate your support. I do plan to build a couple of other different themed versions of this. Probably a science fiction one and maybe
a more natural one with birds flying. So stay tuned for those. As always thanks
for watching, keep on building and I’ll see you next time. Oh no, the Sopwith Camel’s coming. Evasive maneuvers. Pew, pew, pew, pew, pew. Oh, no, man down.

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