Duration
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Re: Duration
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Last edited by _HenryHscioly_ on Thu Mar 15, 2012 11:03 pm, edited 3 times in total.
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Re: Duration
Well I, like most here, would love to hear more about it but similarly I respect that you want to keep your design to yourself_HenryHscioly_ wrote:oh, sorry for the vague wording, troy made it...a team with 6+ min didnt make to state
no, it was pretty real, it was actually mine..
1.still tried to slow down the propellers when at the ceiling, but, wasnt stuck on anything or jammed anywhere
2.stabilized with fin-like things(no more description available, you can think about it and do tests:])
those two, really were, the big points that allowed it to fly so long, 2:06
rubber, i actually didnt have time to test, because i am the only sole person doing car,heli, and tower,plus2 study events
but, i just picked approximate(two 1.15gram motors(including o-rings))
I dont want to spoil the fun that everyone should have thinking about it or testing helicopters, so i will not post a picture,
my coaches probably dont approve of that nor my description above...but i think its okish
my question to every1, just opinion, maybe some1 cud submit a clarification?:]
fin-like things, the helicopter stays pretty up-right, but wud fin-like things count as contributing to lift..?
what i think of initially, is, do fins in a rocket contribute lift? is a parachute utilizing lift or just only air resistance?
i heard some people wanted the copter to be dq'd cuz the stabilizing element "contributed to lift"?
thanks,
cootos (spelling?) to you for sure. That's impressive
You should probably submit the clarification yourself as the rest of us haven't seen/probably visualizations differing from what you actually produced.
In some ways, I could see some sorta of angled 'fin' system rotating adding to lift, but a true 'fin' is perpendicular to the ground (or so) and thus that would not produce lift, only lots-o-lots-o drag
It's an interesting idea you bring up. I might play with that after my regional if we're still in the perpetual game
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Re: Duration
bad news guys, I CAN'T DO HELICOPTERS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Our self schedule timing for regionals got messed up so I have towers and heli at the same time and I chose towers. Is there any way to change the self-schedule cuz I don't trust anybody else flying my copter so they might have to build their own..
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Re: Duration
Oh no! For the COD regionals at least, you can change it before March 7, so if you email your coach now they might be able to find another time for you. When I did the self-scheduling for the team, I made sure there were no conflicts between building events... it wasn't that difficult to do, so it's funny that you had problems. Do you and your partners not have any other hours open at the same time or something?
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Re: Duration
That's the exact problem, we aren't open together at the same time. I'm not sure I can convince my coach to do it in time because she is more like a supervisor than a coach and she doesn't have much of a drive or any push to do things on time!! I'll have to build a more durable design for the sub flyer... Hopefully it'll last over 1:30 but I'm not sure... I want it strong enough to last through a flight without breaking due to bad technique (They have never flown any before). 

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Re: Duration
Dude... with your 3:00 flight you posted about before, skip another event to do it. You'll get 1st, if not extremely close second.thsom wrote:That's the exact problem, we aren't open together at the same time. I'm not sure I can convince my coach to do it in time because she is more like a supervisor than a coach and she doesn't have much of a drive or any push to do things on time!! I'll have to build a more durable design for the sub flyer... Hopefully it'll last over 1:30 but I'm not sure... I want it strong enough to last through a flight without breaking due to bad technique (They have never flown any before).
A sub flyer can do well too. If your schools team is the first year I'm not sure how likely it is you'll make state anyway (sorry, I'm a pessimist. If your entire team has studied intensely, I think you'll go). If you don't go, pour everything into this regional so at least youll have 1 placing medal out of this. If it seems like the end of the road, throw everything you got at it. I send a 2 subs who had never flown it until a week prior to state to fly mine at state. With about 4 hours of non-consecutive crash course on flying helicopters, I got 2nd. (3 seconds behind first)
You don't need to explain how to build it/anything else, just to fly. Where to hold it, where not to, how many windsish, how to put on motorstick and let go
Trust me, you don't want to not pour yourself into it, then not go and never actually have your creation fly
Thoughts from me...
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Re: Duration
An often overlooked important part of SO is teamwork...which is why we don't have any events that are limited to a single student. Take some time and coach another student in how to launch a helicopter... remember at one point you didn't know the first thing about the technique either, but you learned. I guarantee other team members can learn as well. In the end you'll be a stronger team, and you'll get to experience what happens in real-world engineering teams.mrsteven wrote:
You don't need to explain how to build it/anything else, just to fly. Where to hold it, where not to, how many windsish, how to put on motorstick and let go
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Re: Duration
As per usual, not the place for clarifications, opinions only, etc._HenryHscioly_ wrote:<SNIP description of impressive flight> my question to every1, just opinion, maybe some1 cud submit a clarification?:]
fin-like things, the helicopter stays pretty up-right, but wud fin-like things count as contributing to lift..?
what i think of initially, is, do fins in a rocket contribute lift? is a parachute utilizing lift or just only air resistance?
i heard some people wanted the copter to be dq'd cuz the stabilizing element "contributed to lift"?
thanks,
If the fins were vertical, light a rocket, I don't see how physically they could provide lift, just doesn't work that way. If they were off vertical and moving sideways, its possible and is certainly at risk of violating the rules. I used to be an engineer working on air-to-air missiles in my youth (Sidwinder AIM-9M to be specific, scary how long ago that was, anway). Those missles flew mostly horizontal, and I can guarantee you the fins contributed significant lift at speed. It was a significant component of the flight model and range. Without seeing your design, hard to say.
Please consider putting up a picture AFTER the season, as I'm confident we'll modify the rules for next year and based on your success to come up with a new challenge. And of course helicopters moves out of div C (most likely) to div B and you get to fly catapult gliders next year.
And HIGHEST compliments, we threw that Chinook thing in the rules as a challenge to encourage out of box thinking with no concept if it was feasible, and you more than rose to the challenge. I'd actually love to see a video some day.
Congrats!!!
Jeff Anderson
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Re: Duration
...... Should we be scared? Remind me not to make you mad.... hahajander14indoor wrote: I used to be an engineer working on air-to-air missiles in my youth (Sidwinder AIM-9M to be specific, scary how long ago that was, anway).
Jeff Anderson
Livonia, MI
Anyway, thats what I was thinking as well thats starting to hit the finer points of the rules where depending on how much the event supervisor knows about lift depends on it being tiered
You guys threw out the chinook without knowing? What would have happened if it wasn't physically capable?
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Re: Duration
People wouldn't have made them.mrsteven wrote: What would have happened if it wasn't physically capable?
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