Air Trajectory B/C

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Whiteheat073
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Re: Air Trajectory B/C

Postby Whiteheat073 » November 6th, 2015, 8:36 am

Also, is the graph template for Division B available yet? On the event sheet it says that it is available on the website, but it says that it is not available yet.
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Re: Air Trajectory B/C

Postby brayden box » November 6th, 2015, 11:37 am

What is the max degree for div B that the target can be placed away to the right or left from the center?
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Re: Air Trajectory B/C

Postby bernard » November 6th, 2015, 12:38 pm

What is the max degree for div B that the target can be placed away to the right or left from the center?
The far target is the only one that does not need to be on the centerline, and it can be placed up to 2.00 m left or right of the centerline, and between 2.00 and 8.00 meters in the launch direction. The largest angle you would turn your device happens when the target is 2.00 m away in the launch direction and 2.00 m left or right of the centerline. This angle is arctan(2.00/2.00) = 45 degrees. This assumes your device launches the projectile perfectly straight towards the launch direction.
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Whiteheat073
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Re: Air Trajectory B/C

Postby Whiteheat073 » November 6th, 2015, 12:43 pm

What is the max degree for div B that the target can be placed away to the right or left from the center?
The far target is the only one that does not need to be on the centerline, and it can be placed up to 2.00 m left or right of the centerline, and between 2.00 and 8.00 meters in the launch direction. The largest angle you would turn your device happens when the target is 2.00 m away in the launch direction and 2.00 m left or right of the centerline. This angle is arctan(2.00/2.00) = 45 degrees. This assumes your device launches the projectile perfectly straight towards the launch direction.
Do you believe a trebuchet would be able to shoot perfectly straight? I am worried about it launching with too much velocity and that it will go too high and go over the target.
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Whiteheat073
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Re: Air Trajectory B/C

Postby Whiteheat073 » November 6th, 2015, 12:48 pm

Also, will I be allowed to pull a string to release the hook and activate the trebuchet?
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Re: Air Trajectory B/C

Postby bernard » November 6th, 2015, 12:54 pm

Also, will I be allowed to pull a string to release the hook and activate the trebuchet?
A lot of teams trigger their device with a string or rod that is pulled. Keep in mind that the triggering device (3.e.) must allow for you to be at least 75 cm away from the launch area. So you'd most likely need a string or something that is long.

I'll consider your previous question later today; I have something coming up in a couple of minutes.
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Re: Air Trajectory B/C

Postby Whiteheat073 » November 6th, 2015, 12:55 pm

Also, will I be allowed to pull a string to release the hook and activate the trebuchet?
A lot of teams trigger their device with a string or rod that is pulled. Keep in mind that the triggering device (3.e.) must allow for you to be at least 75 cm away from the launch area. So you'd most likely need a string or something that is long.
Okay. Thank you very much!
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Whiteheat073
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Re: Air Trajectory B/C

Postby Whiteheat073 » November 6th, 2015, 1:02 pm

For a trebuchet, what projectile would you recommend we launch?
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Re: Air Trajectory B/C

Postby Whiteheat073 » November 6th, 2015, 1:10 pm

Does the 5 kg maximum mass include the string and projectiles?
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Re: Air Trajectory B/C

Postby bernard » November 6th, 2015, 3:37 pm

Does the 5 kg maximum mass include the string and projectiles?
See rule 3.a.: items of nominal mass do not count towards projectiles. So likely a string would not count towards your mass. And your projectile likely wouldn't contribute to the launch force. Short answer: probably no to both (unless you decide to make your string really heavy).
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