Mythbusters predictions, place your bets.
Comments
-
Hmmm I'm going with slightly backwards, the sail would have to be 100% efficient at catching all the force of the fan for it to be totally stationary. Though I'm not sure how the sail acting like a wing could effect the movement direction.. Interesting problem.0
-
I haven't got a clue tbh, I'm eagerly waiting on the answer being posted.0
-
I predict the boat will be poorly made and the sail will fall off when the fan is turned on.0
-
The more I think about this, the more likely I think it is that the boat will go backwards.
And although I'm not convinced the hull will have an appreciable effect, we'll have to wait and see.
It's on tomorrow at 8 or 9pm on discovery, by the way0 -
I think it will spin in circles, before sinking, bumping into a nuclear submarine which will release a torpedo that hits an oil rig causing petrol prices to rise.0
-
supersonic wrote:I think it will spin in circles, before sinking, bumping into a nuclear submarine which will release a torpedo that hits an oil rig causing petrol prices to rise.
You always spoil everything
0 -
Never mind littlle boats
Ponder what happens when a bucket of water spins in space far enough away from any objects that would affect it gravitationaly.I'm going to blow the bank on a new build ( within reason ) NOW DONE!!
http://i570.photobucket.com/albums/ss14 ... 010362.jpg0 -
Ssssh, don't tell them that Master Bates and Seaman Staines were onboard.0
-
for those that said the boat was poorly made the thing held together nicely to see results
superinjunction taken out on results but can be seen in jock land and twatterI'm going to blow the bank on a new build ( within reason ) NOW DONE!!
http://i570.photobucket.com/albums/ss14 ... 010362.jpg0 -
And the result was...........I'm going to blow the bank on a new build ( within reason ) NOW DONE!!
http://i570.photobucket.com/albums/ss14 ... 010362.jpg0 -
The result was, incredibly....
The boat can go forwards, OR backwards, OR stay completely and utterly still!
FRIKKIN AWESOME!
I love it when something like that ends up being entirely unexpected. Well, kind of.
As it turns out, with a big enough fan, the sail will act as a reflector, blasting some of the fan's power sideways and rearwards, resulting in a net forward thrust.
Cool!
They even made a jet-engine propelled skateboard. Damn, I want to work on that show so much. I wish they'd invited me on as their "sound expert"0 -
it went forwards when enough thrust was applied.
they proved originally that the forces would cancel themselves out and the boat remained exactly stationary (just like what i said)
however, mythbusters being mythvusters meant they tried until they could get it to happen and with enough thrust, it looked like some of the thrust was "reflected" off of the sail and there was a net thrust backwards producing forward movement.
they did agree that the bets way to do their business was to just point the fan bacwards and the boat would have got cracking with the knacking, i dont know why you would try to fill your sail0 -
but.... if you pointed the fan backwards with the sail up, wouldn't the sail cause drag and stop it from gaining any speed? I wonder if it would go any faster than with the fan pointing at the sail?0
-
The Northern Monkey wrote:but.... if you pointed the fan backwards with the sail up, wouldn't the sail cause drag and stop it from gaining any speed? I wonder if it would go any faster than with the fan pointing at the sail?
All in all that was one of the best episodes yet I reckon. They really were pretty damned comprehensive too, which is always fun0 -
It's all about if the system is enclosed or not. Not enclosed, hard to model the actual airflow and you will get some net movement.0
-
yeehaamcgee wrote:The Northern Monkey wrote:but.... if you pointed the fan backwards with the sail up, wouldn't the sail cause drag and stop it from gaining any speed? I wonder if it would go any faster than with the fan pointing at the sail?
All in all that was one of the best episodes yet I reckon. They really were pretty damned comprehensive too, which is always fun
It was a question :P
Might be a fixed sail boat!
Did they try it from the side?
Did Kari get wet?0 -
I don't think it is, honestly, Sonic. Real world result was, give it PLENTY of welly, and it will go forwards.
Give it a smaller sail, and it will go backwards.
Give it "normal" conditions, and nothing happens at all.
So, nobody was wrong in their predictions (ahem, apart from one GT loving blue plasticine blob - who was quite quite terrifyingly wrong )
But then again, everyone was correct, (apart from one GT loving blue plasticine blob - who was quite quite terrifyingly wrong ) and one guy studying physics0 -
I'll have to watch it lol. If you put the whole lot in a box would the same happen?0
-
Yeah, I think so. Imagine that the sail gets blown by the fan into a dish shape (basically). That dish now reflects the fan's thrust.
Check it out, it was actually really cool. I love it when they do things that have unforseen consequences.
And jet powered skateboards. That looked fun too, even though there was no reason for them to have it in the show.0 -
For all that are curious. The model in the bath went round in a circle.....OI'm going to blow the bank on a new build ( within reason ) NOW DONE!!
http://i570.photobucket.com/albums/ss14 ... 010362.jpg0 -
Richie63 wrote:For all that are curious. The model in the bath went round in a circle.....O
I was right first time!0 -
supersonic wrote:Richie63 wrote:For all that are curious. The model in the bath went round in a circle.....O
I was right first time!
Ahem. Not really...supersonic wrote:I think it will spin in circles, before sinking, bumping into a nuclear submarine which will release a torpedo that hits an oil rig causing petrol prices to rise.
Of all the unexpected outcomes though that's the one I WISH had happened0 -
Close enough hehe0
-
Shall we do the same for next week's?
Carry this thread on, or new one?0 -
Yeah! What channel is it on?0
-
im deffo in, so far i am completely correct in my predictions
COMPLETELY CORRECT.0 -
I'm in as long as I can build somethingI'm going to blow the bank on a new build ( within reason ) NOW DONE!!
http://i570.photobucket.com/albums/ss14 ... 010362.jpg0 -
supersonic wrote:Yeah! What channel is it on?0