Can sailors sail downwind faster than wind?
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From: Ken S. Tucker on 13 Aug 2010 00:01 Some think so, such as JB. Newsgroups: sci.electronics.basics, sci.electronics.design From: ThinAirDesigns <ThinAirDesi...(a)aol.com> Date: Thu, 12 Aug 2010 20:32:05 -0700 (PDT) Local: Thurs, Aug 12 2010 8:32 pm Subject: Re: OT Sail downwind faster than the wind! Ken, do you even KNOW HOW to calculate the energy in the vehicle and the spinning propeller correctly? If so, why have you avoided posting it and proving your theory wrong? JB
From: ThinAirDesigns on 13 Aug 2010 10:29 On Aug 12, 9:01 pm, "Ken S. Tucker" <dynam...(a)vianet.on.ca> wrote: > Some think so, such as JB. Join the modern world Ken -- ice-boats have been able beat a balloon in a downwind race for near a hundred years now. JB
From: Ken S. Tucker on 13 Aug 2010 14:11 On Aug 13, 7:29 am, ThinAirDesigns <ThinAirDesi...(a)aol.com> wrote: > On Aug 12, 9:01 pm, "Ken S. Tucker" <dynam...(a)vianet.on.ca> wrote: > > > Some think so, such as JB. > > Join the modern world Ken -- ice-boats have been able beat a balloon > in a downwind race for near a hundred years now. > JB Nope, not DIRECTLY Down Wind, otherwise produce a reference that isn't a 'wives tale' for a change :-). Regards Ken
From: ThinAirDesigns on 13 Aug 2010 14:40 Ken Tucker: > Nope, not DIRECTLY Down Wind, You are correct -- the airfoils on a ice-boat do not travel directly downwind, they take the same angled path through the wind that the airfoils on the Blackbird DDWFTTW vehicle take. If you agree that a traditional sailing rig can beat the balloon to a downwind mark by reaching, you have just conceded that there is no violation of any physical laws when a device gets there before the balloon. The ice-boat and the Blackbird use the same propulsion method -- you can't have it both ways. JB
From: sno on 13 Aug 2010 14:50
On 8/13/2010 2:40 PM, ThinAirDesigns wrote: > Ken Tucker: >> Nope, not DIRECTLY Down Wind, > > You are correct -- the airfoils on a ice-boat do not travel directly > downwind, they take the same angled path through the wind that the > airfoils on the Blackbird DDWFTTW vehicle take. > > If you agree that a traditional sailing rig can beat the balloon to a > downwind mark by reaching, you have just conceded that there is no > violation of any physical laws when a device gets there before the > balloon. > > The ice-boat and the Blackbird use the same propulsion method -- you > can't have it both ways. > > JB "Experiment beats theory any day", this means that the theory that a device cannot go faster than the wind downwind is incorrect.... "one experiment cannot a theory make, however one experiment can a theory break" have fun....sno -- Correct Scientific Terminology: Hypothesis - a guess as to why or how something occurs Theory - a hypothesis that has been checked by enough experiments to be generally assumed to be true. Law - a hypothesis that has been checked by enough experiments in enough different ways that it is assumed to be truer then a theory. Note: nothing is proven in science, things are assumed to be true. |