Ping Pong Parachute B/C

Hartman
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Re: Ping Pong Parachute B/C

Post by Hartman »

Any good ways to find the center of mass of the rocket?

My rocket has been having a bit of trouble keeping straight.
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Airco2020
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Re: Ping Pong Parachute B/C

Post by Airco2020 »

Hartman wrote: ↑Tue Jan 21, 2020 6:32 pm Any good ways to find the center of mass of the rocket?

My rocket has been having a bit of trouble keeping straight.
Just find where it balances. For us we've had to ad weight to the top and ouch the CG just above the middle of the rocket.
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donutsandcupcakes
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Re: Ping Pong Parachute B/C

Post by donutsandcupcakes »

Just making sure there's no limit to the size of your parachute rt?

thx
donuts
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xiangyu
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Re: Ping Pong Parachute B/C

Post by xiangyu »

donutsandcupcakes wrote: ↑Wed Jan 22, 2020 7:29 pm Just making sure there's no limit to the size of your parachute rt?

thx
donuts
Nope
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Ramrod
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Re: Ping Pong Parachute B/C

Post by Ramrod »

So our ceiling height for the competition is 55 ft with a maximum pressure of 65 psi. Even when using a liter bottle with 65 psi, we are not getting close to the ceiling. (Our deployment is super consistent though)
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donutsandcupcakes
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Re: Ping Pong Parachute B/C

Post by donutsandcupcakes »

xiangyu wrote: ↑Wed Jan 22, 2020 8:00 pm
donutsandcupcakes wrote: ↑Wed Jan 22, 2020 7:29 pm Just making sure there's no limit to the size of your parachute rt?

thx
donuts
Nope
Thank you, and I have one more question. This is more like asking everyone's opinions but which shape is better for parachutes - octagon or circle? Everyone pls share your opinions. Because I have been testing dif parachutes and I can't figure out which shape is better..
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newflight
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Re: Ping Pong Parachute B/C

Post by newflight »

circle
donutsandcupcakes wrote: ↑Fri Jan 24, 2020 4:31 am
xiangyu wrote: ↑Wed Jan 22, 2020 8:00 pm
donutsandcupcakes wrote: ↑Wed Jan 22, 2020 7:29 pm Just making sure there's no limit to the size of your parachute rt?

thx
donuts
Nope
Thank you, and I have one more question. This is more like asking everyone's opinions but which shape is better for parachutes - octagon or circle? Everyone pls share your opinions. Because I have been testing dif parachutes and I can't figure out which shape is better..
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megrimlockawesom
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Re: Ping Pong Parachute B/C

Post by megrimlockawesom »

donutsandcupcakes wrote: ↑Fri Jan 24, 2020 4:31 am
xiangyu wrote: ↑Wed Jan 22, 2020 8:00 pm
donutsandcupcakes wrote: ↑Wed Jan 22, 2020 7:29 pm Just making sure there's no limit to the size of your parachute rt?

thx
donuts
Nope
Thank you, and I have one more question. This is more like asking everyone's opinions but which shape is better for parachutes - octagon or circle? Everyone pls share your opinions. Because I have been testing dif parachutes and I can't figure out which shape is better..
Circle by a longshot.
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Events 2018: Battery Buggy (3rd at Nats), Rollercoaster (18th at Nats), Ping Pong (1st at states)
Events 2019: Codebusters, Ping Pong Parachute (2nd at Regionals OVERALL), Thermodynamics
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ET2020
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Re: Ping Pong Parachute B/C

Post by ET2020 »

I'm having trouble with deployment- the strings and canopy of my parachute tend to get stuck on the rocket when it reaches it's apex, so the parachute just falls with the rocket. Any tips on successful deployment? Sorry if someone else posted this already.
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jaggie34
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Re: Ping Pong Parachute B/C

Post by jaggie34 »

Does anyone know what first place at MIT (~55 ft) time was?
Boca Raton High School -> Georgia Tech
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and Circuit Lab too I guess
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