Air Trajectory B/C

[Whiteheat073]

I remember when I first joined, there were 60 something posts on the subject. Now look at it! It's an entire forum!

[Whiteheat073]

So I decided to be the target for my project, standing 8 meters away, and as of yesterday it started hitting me! it hurts a lot, though, so that means we have got good velocity I guess
Anyways, getting to the point, will a balloon releasing its air to trigger the mechanism count as air powered?

[ft55555]

Hi, new forum member here. As anybody noticed a difference in consistency between using solid golf practice balls vs. ones with holes (like a whiffle ball)?

[ft55555]

Is there a rule that the device has to launch the ball with air power? Or is it just more effective and proficient?

I thought the "air" in "air trajectory" had to do with the projectile being launched into the air (i.e. rather than being rolled on the ground, for example).

[ft55555]

We've just got a kickball and a barrel in it.

How do you fill your kickball up? What kind of ball do you use?

We just fill it with air...? It's your standard grade school kickball, like what you play 4 square with.

Are you allowed to refill the kickball with air between launches?

[sciolylover13]

How do you fill your kickball up? What kind of ball do you use?

We just fill it with air...? It's your standard grade school kickball, like what you play 4 square with.

Are you allowed to refill the kickball with air between launches?

I've never not been allowed to...

[Phys1cs]

We just fill it with air...? It's your standard grade school kickball, like what you play 4 square with.

Are you allowed to refill the kickball with air between launches?

I've never not been allowed to...

you should be allowed to... just like if you're using 2L bottles, you should be able to change the bottle between launches.

It's part of re-adjusting your device before the next launch, just as necessary as re-aligning your machine or making sure there's a new ball in there

[chalker]

Are you allowed to refill the kickball with air between launches?

I've never not been allowed to...

you should be allowed to... just like if you're using 2L bottles, you should be able to change the bottle between launches.

It's part of re-adjusting your device before the next launch, just as necessary as re-aligning your machine or making sure there's a new ball in there

Correct. You might want to look at the bolded language in rule 3.c., which we added this year just for this purpose.

[Whiteheat073]

I'm performing my event tonight for my school! wish me luck!

[laidlawe18]

I have a question about the size requirements.

In section 3 of the rules it says that the device must fit within a 70cm cube in a ready-to-launch configuration.

In section 4 of the rules it says that the device must be placed within a 1m x 1m square on the floor.

So, does this mean that right before I launch, the device must be able to fit within a 70cm cube in any orientation, and that the device also must be within the 1m square on the floor, meeting both requirements?

Or does this mean that when they fill out the checklist, the device has to fit within a 70cm cube, but during the actual competition, the device only has to be within that 1m square, and can be taller than 70 cm?