http://www.siege-engine.com/seuss/taunters.jpg

"Gilligan" wrote in message
...
http://www.siege-engine.com/seuss/taunters.jpg

so you're saying a flying, diseased cow sparked the revolution if sail
design?
Scout

"Scout" wrote in message
. ..
"Gilligan" wrote in message
...
http://www.siege-engine.com/seuss/taunters.jpg

so you're saying a flying, diseased cow sparked the revolution if sail
design?
Scout


No thanks, we've already got one.

Actually the Chinese Junk sails are the first use of a airfoil shape for
sailing. The sails are battened. They can also sail into the wind. Aircraft
wings are rigid, the are not loose fitting. Parachutes and paragliders are
like that. Kites are rigid airfoils. The Chinese invented kites and human
size gliders over 2500 years ago. I would say that theChinese airfoil
designs may have influenced their sailboats.

Another innovation using a foil is the fin keel and the articulated rudder
of Antonius Flettner. These innovations happened about the time of modern
flight.

The notion that a diseased, rotted, flying cow ushered in any type of
sailing innovation is udder nonsense.

"Gilligan" wrote in message
. ..

"Scout" wrote in message
. ..
"Gilligan" wrote in message
...
http://www.siege-engine.com/seuss/taunters.jpg

so you're saying a flying, diseased cow sparked the revolution if sail
design?
Scout


No thanks, we've already got one.

Actually the Chinese Junk sails are the first use of a airfoil shape for
sailing. The sails are battened. They can also sail into the wind.
Aircraft wings are rigid, the are not loose fitting. Parachutes and
paragliders are like that. Kites are rigid airfoils. The Chinese invented
kites and human size gliders over 2500 years ago. I would say that
theChinese airfoil designs may have influenced their sailboats.

Another innovation using a foil is the fin keel and the articulated rudder
of Antonius Flettner. These innovations happened about the time of modern
flight.

The notion that a diseased, rotted, flying cow ushered in any type of
sailing innovation is udder nonsense.


I hear the Chinese like gliding off their big wall. It was considered good
luck to yell "I fart in your general direction!" before jumping.

I guess once people got the idea of fluid movement around restrictions
creating usable pressure differentials, it became just a matter of
experimenting with different shapes and fluids.
Scout

"Scout" wrote in message
...


I guess once people got the idea of fluid movement around restrictions
creating usable pressure differentials, it became just a matter of
experimenting with different shapes and fluids.
Scout



Think of this. The sail has the most power delivered to it when the residual
wind velocity is zero after interacting with the sail.

Any leftover wind velocity is wasted energy, just like left over stean in a
steam engine.

The most efficient sail design reuses the wind velocity, similar to the
stages on a turbine engine.

The most efficient sail design of all time was developed in Northern Italy.
The design was lost during the early Renaissance, only to be recently
uncovered during and archeological dig in a shallow bay. The sails reused
the wind many times over with each "stage" adjusted for the reduced wind
velocity. The sails are a series of "slats" with multiple gaps and
adjustable angles of attack. They are referred to as Venetian Sails.

"Gilligan" wrote in message
. ..

"Scout" wrote in message
...


I guess once people got the idea of fluid movement around restrictions
creating usable pressure differentials, it became just a matter of
experimenting with different shapes and fluids.
Scout



Think of this. The sail has the most power delivered to it when the
residual wind velocity is zero after interacting with the sail.

Any leftover wind velocity is wasted energy, just like left over stean in
a steam engine.

The most efficient sail design reuses the wind velocity, similar to the
stages on a turbine engine.

The most efficient sail design of all time was developed in Northern
Italy. The design was lost during the early Renaissance, only to be
recently uncovered during and archeological dig in a shallow bay. The
sails reused the wind many times over with each "stage" adjusted for the
reduced wind velocity. The sails are a series of "slats" with multiple
gaps and adjustable angles of attack. They are referred to as Venetian
Sails.

One would think that the sheer volume of air would make its efficient use a
non-issue. Unless the point is the area of the cross-section of air
available to a given size boat is limited. If that makes any sense.
Scout