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zyzzyva980 wrote:I would think the elevated near target would come back, unless they took it out because event supervisors had trouble setting it up. There might be a change to the device rules so the teams don't just use the same device again next year. Looking forward to seeing what changes.

Probably not going to be elevated targets unless they have found a way around the issues with setting it up: http://scioly.org/phpBB3/viewtopic.php? ... 95#p271917.

For those planning on doing Air Trajectory next year, do you plan on changing anything from this year such as:
Design
Portability
Ease of Use
Mobility
If so, elaborate?

I was going through the trajectory wiki and found mention of a centrifugal force powered trajectory. Do you guys think I would be able to generate enough force to launch a tennis ball the required distance with a design like this?

windu34 wrote:I was going through the trajectory wiki and found mention of a centrifugal force powered trajectory. Do you guys think I would be able to generate enough force to launch a tennis ball the required distance with a design like this?

If a tennis ball does not work you could always use a ping pong ball.

sciolylover13 wrote:

windu34 wrote:I was going through the trajectory wiki and found mention of a centrifugal force powered trajectory. Do you guys think I would be able to generate enough force to launch a tennis ball the required distance with a design like this?

If a tennis ball does not work you could always use a ping pong ball.

im trying to get away from ping pong balls and golf balls cause they are too light and will curve at the slightest air movement
I guess the real question here is: wil it be accurate and percise to the cm?

Is anyone anticipating a change to type of projectiles or distances (increasing distance of targets)?

windu34 wrote:

sciolylover13 wrote:

windu34 wrote:I was going through the trajectory wiki and found mention of a centrifugal force powered trajectory. Do you guys think I would be able to generate enough force to launch a tennis ball the required distance with a design like this?

If a tennis ball does not work you could always use a ping pong ball.

im trying to get away from ping pong balls and golf balls cause they are too light and will curve at the slightest air movement
I guess the real question here is: wil it be accurate and percise to the cm?

They might, but I have never experienced this problem (in competition or practice). However, maybe your conditions at competition and practice are different. As for being accurate and precise to the cm, it really depends on your understanding and analysis of your device, and of course the making of the device itself, the ball should not make a too much of a difference.

They might, but I have never experienced this problem (in competition or practice). However, maybe your conditions at competition and practice are different. As for being accurate and precise to the cm, it really depends on your understanding and analysis of your device, and of course the making of the device itself, the ball should not make a too much of a difference.[/quote]
Yours dont curve??? Would you care to describe your device?

Sorry, I agree and differ to previous comments.
1. Actually, technically, the path a ball makes is parabolic along the the plane perpendicular to the floor...so it is moving in a curved motion naturally xD I'll assume you meant in the plane parallel to the floor. The ball shouldn't curve if you make your device right. This applies to any ball.

2. As for the ball not making too much of a difference, I disagree. It's Newton's second law. f=ma. The more mass an object has, the more force required to accelerate and change it's velocity. This is why a bowling ball will generally move in a straight path down a ramp and onwards while...a tennis ball might not. So how does this apply to air trajectory? Obviously, tennis balls and racquetballs will be less influenced by internal air conditions and will be more consistent.

My personal experiences show that ping pong balls can be fairly reliable and darn accurate within the first 6-8 m. But beyond that? It's more and more inconsistent.

3. I graduated scioly. But...if i had to guess (sorry Bernard), I'd just expect raised/elevated targets.

nxtscholar wrote:3. I graduated scioly. But...if i had to guess (sorry Bernard), I'd just expect raised/elevated targets.

Elevated targets is difficult for event supervisors to set up so it probably isn't the change for next year. ;)
And I think elevated targets aren't fair to teams that hit the ground outside the elevated target.