Air Trajectory B/C

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John Richardsim
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Re: Air Trajectory B/C

Post by John Richardsim » September 18th, 2014, 3:49 pm

chalker wrote:
chinesesushi wrote:Whoever edited the wiki, Airjectory =/= Air Trajectory. The trial event at nationals last year was not the event that is being held this year.
It's very similar. However, the reason we changed the name was because there was another trial event several years ago named Airjectory that involved 1 liter bottles which is quite different from this year's event (which we trialed at nationals last year)
Yeah, I don't think it's really that big of a deal. However chinesesushi, if you would like to sit down and type out a separate page for Airjectory, be my guest.
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Re: Air Trajectory B/C

Post by gravedigger » September 23rd, 2014, 2:09 pm

So excited about Air Trajectory.

Looking at the older images for the airjectory and was wondering if there are examples of prototypes from prior events if someone can share.

Cheers

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Re: Air Trajectory B/C

Post by 1nxtmonster » September 30th, 2014, 4:39 am

Looking forward to this event!
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Re: Air Trajectory B/C

Post by UQOnyx » September 30th, 2014, 2:56 pm

I just got the rules for Air Trajectory (yay!). I just wanted to make sure I understood the rules correctly (Not a clarification, just want to make sure I understand). Construuction rules state that the allowable energy to power launch equals the falling force of 5000 Kg... This means gravity right? Meaning the real force would be 5000 Kg multiplied by the force of gravity, right?
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Re: Air Trajectory B/C

Post by bernard » September 30th, 2014, 3:10 pm

Any parts of your device that decrease in potential energy when triggered must have a mass less than 3.500 kg (Div. C) or 5.000 kg (Div. B).
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Re: Air Trajectory B/C

Post by iwonder » September 30th, 2014, 6:41 pm

UQOnyx wrote:I just got the rules for Air Trajectory (yay!). I just wanted to make sure I understood the rules correctly (Not a clarification, just want to make sure I understand). Construuction rules state that the allowable force to power launch equals the falling force of 5000 g... This means gravity right? Meaning the real force would be 5000 g multiplied by the acceleration of gravity, right?
Yes. 5kg is the division B limit.

(sorry I've had a lot of physics work in the past month so I've gotten a little picky :P )
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Re: Air Trajectory B/C

Post by slapyou512 » October 3rd, 2014, 8:15 am

Hey so I was wondering if anyone knows if its okay to have multiple string launch systems? I was planning on one to pull a plate out to drop the weight and one to turn a valve, is that okay? Please help

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Re: Air Trajectory B/C

Post by bernard » October 3rd, 2014, 8:26 am

By rules 3. e. and 4. b., which do not prohibit multiple string launch systems, it seems like that would be allowed.

Seeing that you are a new member, please understand that no opinions on this site are official. The only place for official clarifications is through the official website.
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Re: Air Trajectory B/C

Post by retired1 » October 3rd, 2014, 4:45 pm

As long as the power came from the falling weight and was converted to air pressure which somehow (but not necessarily directly) propelled the ball.

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Re: Air Trajectory B/C

Post by retired1 » October 3rd, 2014, 8:35 pm

I took another look at the rules. Definitely submit it for a clarification. I can see it as not being contestable if both cords were tie into a single pulled cord. The cord could conceivably release the weight and with a bit more pull, turn the valve. I assume that you are thinking of a ball valve. If so, how do you plan to loosen it up so it can turn the 90 degrees without disturbing the aim?

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