Re: Unmanned sub crosses ocean

From: Alan Browne (alan.browne_at_FreeLunchVideotron.ca)
Date: 11/26/04


Date: Fri, 26 Nov 2004 11:29:52 -0500

Hans-Georg Michna wrote:

> You see, a few thoughts already went into this. (:-)

I don't doubt it, OTOH, gasketting propeller drive shafts has been going on for
over a century with a good track record. Controlling a sail in two axis will
require more power than controlling a rudder due to the mass and moments of the
sail... so the articulation and actuators will be larger and consume more power
than a rudder actuator and a simple rotating vertical axis for the sail.

Your project, so do as you like.

Cheers,
Alan

-- 
-- r.p.e.35mm user resource: http://www.aliasimages.com/rpe35mmur.htm
--        r.p.d.slr-systems: http://www.aliasimages.com/rpdslrsysur.htm
--             [SI] gallery: http://www.pbase.com/shootin
--                [SI] rulz: http://www.aliasimages.com/si/rulz.html
--                   e-meil: there's no such thing as a FreeLunch.


Relevant Pages

  • Re: inductive or resistive load
    ... I'm trying to make a board for controlling AC loads. ... able of swithing on/off the AC power supply. ... adaptor, assuming that the total consumption of the equipment that it ...
    (sci.electronics.basics)
  • inductive or resistive load
    ... I'm trying to make a board for controlling AC loads. ... able of swithing on/off the AC power supply. ... adaptor, assuming that the total consumption of the equipment that it ...
    (sci.electronics.basics)
  • Re: rheostat with router/ effective?
    ... A resistive type of voltage reducer is the wrong thing to buy ... because it will not only reduce the speed of the router but the power too. ... from about 25% to 100% but are significantly less effective at controlling ...
    (rec.woodworking)
  • Re: rheostat with router/ effective?
    ... >A resistive type of voltage reducer is the wrong thing to buy ... >because it will not only reduce the speed of the router but the power too. ... >from about 25% to 100% but are significantly less effective at controlling ...
    (rec.woodworking)
  • Re: Check my logic please (WPC-95 issues)
    ... Do you have a logic probe Rick? ... You list the controlling IC and pins of the ... Those four transistors are arrayed together on the Power Driver ...
    (rec.games.pinball)