Square riggers can go at about 210-240 degrees from the wind (but couldn’t
as fast at that angle) and can tack over it, however a square rigged ship
in the form of a frigate could sometimes outrun sloops 1/50 of the size due
to square rig being better at holding air at 0-60 degrees of the winds
direction…
… lets put it this way, modern sails would never give enough wind to a
Man O War…
“Square rigged ships only went in one basic direction – with the wind”
PARDON?! Clearly, this statement is false. What did they do if the wind
changed, or if they had to return home against the trade winds?
In fact, square riggers, while not as efficient to wind as a modern sailing
boat, could sail at a reasonably close angle to the wind.
7:47 watch the two sailboats and the motorboat, above the sailboat with the
red sail – almost a bonus clip with a sail disaster, and a lesion by
itself; How to NOT maneuver a boat in crowded situations.
what about when a boat loses its keel (on a reef or some such), they still
sail … forwards! albeit less efficiently and somewhat dangerously, they
still ‘work’ from a momentum perspective. their forward moment is still
greater than the leeway, even without a keel.
this kind of ‘lift’ theory of aerodynamics has (in the past decade) been
quite disputed in the field of aerodynamics anyway, as many experiments
with airfoil (wing) designs which should not create any lift according to
this theory – do!
so this is not the whole story. it may play a part (maybe even a large
part) but its not a complete explanation of whats going on.
Good video about generating lift from the sails and countering it with lift
from the keel… how to shape your sail so the tell tails are flying
instead of hanging… hmmm, reminds me I need to clean up my tell tails so
they aren’t so fuzzy!
Hard to take this seriously when the first thing they say is completely
wrong. Square-rigged ships can most certainly sail into the wind. It’s true
that they can’t lie as close to the wind as a fore-and-aft rigged ship, but
they can tack.There’s no way Magellan, Drake etc. could have made it around
the world in ships that only sailed with the wind. Getting around Cape Horn
from east to west is impossible if you can’t sail your ship into the wind.
Hey guys, just a note about why lift happens, this guy is chatting bull.
Bernoullis law doesnt apply in the case of a wing (or sail). For his law to
apply, certain assumptions must be made. firstly that the fluid has zero
viscosity, but as we can see, the fluid ‘sticks’ to the shape of the wing,
which is a viscous effect. secondly, that it is a steady flow. which as
said in the video, it is not. Finally, Bernoullis theorem only applies to a
single flow, once you talk about flows above and below a wing, its moot.
While Bernoullis can describe some of what is happening, the fundamental
law behind lift is newtons 3rd. watch the flow as it comes off the wing,
its at a different angle, meaning a force was imparted on the air by the
wing, and thus vice versa
(im an aerospace engineering student and even people in the aero business
get this wrong (including the most of the internet), and this isnt coming
from me, this is coming from Dr Iain Dupere at Manchester University)
Square riggers can go at about 210-240 degrees from the wind (but couldn’t
as fast at that angle) and can tack over it, however a square rigged ship
in the form of a frigate could sometimes outrun sloops 1/50 of the size due
to square rig being better at holding air at 0-60 degrees of the winds
direction…
… lets put it this way, modern sails would never give enough wind to a
Man O War…
“Square rigged ships only went in one basic direction – with the wind”
PARDON?! Clearly, this statement is false. What did they do if the wind
changed, or if they had to return home against the trade winds?
In fact, square riggers, while not as efficient to wind as a modern sailing
boat, could sail at a reasonably close angle to the wind.
modern sailboats have it only? look at the old Dutch boats, we use it
already for age’s
7:47 watch the two sailboats and the motorboat, above the sailboat with the
red sail – almost a bonus clip with a sail disaster, and a lesion by
itself; How to NOT maneuver a boat in crowded situations.
EPIC….THANKS.
“produced in high definition” only plays in 360p
I’m a major sailor. I know a lot about sailing and have been doing it for
some time… when I first watched this video it made me laugh.
what about when a boat loses its keel (on a reef or some such), they still
sail … forwards! albeit less efficiently and somewhat dangerously, they
still ‘work’ from a momentum perspective. their forward moment is still
greater than the leeway, even without a keel.
this kind of ‘lift’ theory of aerodynamics has (in the past decade) been
quite disputed in the field of aerodynamics anyway, as many experiments
with airfoil (wing) designs which should not create any lift according to
this theory – do!
so this is not the whole story. it may play a part (maybe even a large
part) but its not a complete explanation of whats going on.
Good video about generating lift from the sails and countering it with lift
from the keel… how to shape your sail so the tell tails are flying
instead of hanging… hmmm, reminds me I need to clean up my tell tails so
they aren’t so fuzzy!
Hard to take this seriously when the first thing they say is completely
wrong. Square-rigged ships can most certainly sail into the wind. It’s true
that they can’t lie as close to the wind as a fore-and-aft rigged ship, but
they can tack.There’s no way Magellan, Drake etc. could have made it around
the world in ships that only sailed with the wind. Getting around Cape Horn
from east to west is impossible if you can’t sail your ship into the wind.
wishy washy kinda
Scientists are terrible at explaining things lol
a luffing sail and a stall on an airplane wing are not aerodynamically
equivalent.
Comment marche un voilier ? Voilà la (les) réponse(s) !
lol lucky you’re doing it somewhere warm and not somewhere freezing like
Hamworthy (Poole, UK)
Lift (in sails as in wings) is generated according to Newton’s 3rd:
http://www.grc.nasa.gov/WWW/k-12/airplane/lift1.html
1:52 I was dying that that jib sheet wasn’t being pulled!
Hey guys. Here’s a neat video explaining the physics of sailing into the
wind (old square sail ships couldn’t do this)
Was produced in high definition “360” max…
I’ve always been so fascinated on how sailing ship works!!
That was fun.
Thanks
the most idiotic video ive ever seen!(from the eyes of a sailor).
Hey guys, just a note about why lift happens, this guy is chatting bull.
Bernoullis law doesnt apply in the case of a wing (or sail). For his law to
apply, certain assumptions must be made. firstly that the fluid has zero
viscosity, but as we can see, the fluid ‘sticks’ to the shape of the wing,
which is a viscous effect. secondly, that it is a steady flow. which as
said in the video, it is not. Finally, Bernoullis theorem only applies to a
single flow, once you talk about flows above and below a wing, its moot.
While Bernoullis can describe some of what is happening, the fundamental
law behind lift is newtons 3rd. watch the flow as it comes off the wing,
its at a different angle, meaning a force was imparted on the air by the
wing, and thus vice versa
(im an aerospace engineering student and even people in the aero business
get this wrong (including the most of the internet), and this isnt coming
from me, this is coming from Dr Iain Dupere at Manchester University)
Your model desperately l lacks sail trim. Move your jib cars back and for
the love of god, tighten your outhaul!
this video keeled me