Difference between revisions of "Propulsion"

From Seasteading
Jump to: navigation, search
(How to keep a Seastead in place)
 
(23 intermediate revisions by 6 users not shown)
Line 1: Line 1:
How to move Seastead, and how to keep it in place.
+
==How to move a Seastead.==
 +
* Motor powered
 +
** [[Thrusters]]
 +
** screws (steam, oil, nuclear...)
 +
*** [http://en.wikipedia.org/wiki/Azipod Azipod]
 +
*** [http://en.wikipedia.org/wiki/Voith-Schneider Voith Schneider Propeller]
 +
** Paddle Wheel
 +
** Water Jet
 +
** [http://www.catamarans.com/electricLagoon/multihulls_waypoint_article.asp Hybrid] Electric used with solar, wind, diesel
  
* [http://en.wikipedia.org/wiki/Azipod Azipod]
+
* [[Wind Power]]
* [http://en.wikipedia.org/wiki/Voith-Schneider Voith Schneider Propeller]
+
** [[Traditional sailplan]]
* [http://www.skysails.info/   SkySails]
+
** kite
* [http://www.kiteship.com/ KiteShip]
+
*** [http://www.skysails.info/index.php?L=1  SkySails]
* [http://en.wikipedia.org/wiki/Sea_anchor Sea Anchor]
+
*** [http://www.kiteship.com/ KiteShip]
 +
** [[Flettner Rotor]]
 +
***http://www.magenn.com/about.php
 +
:[http://en.wikipedia.org/wiki/Rotor_Ship Flettner]'s spinning bodies are spinning vertical cylinders, which propel the vessel thanks to the [http://en.wikipedia.org/wiki/Magnus_effect Magnus effect].
  
If a group of SeaSteads just want to stay near each other but not bump into each other while they mostly drift around a [http://en.wikipedia.org/wiki/Gyre|gyre], then kites and sea anchors could be enough.
+
* [http://en.wikipedia.org/wiki/Suntory_Mermaid_II Wave power]
 +
 
 +
* [[Current Loads]]
 +
:The Magnus effect can also be used with the sea current. If the Seastead spins while in a current, it creates a whirlpool of around itself, and experiences a force perpendicular to the line of motion and away from the direction of spin. As far as I know, there is no application of this to water current, although the [http://en.wikipedia.org/wiki/Kutta%E2%80%93Joukowski_theorem Kutta-Joukowski theorem] states the force is proportional to the density of the fluid, that is 60 times larger.
 +
 
 +
==How to keep a Seastead in place ==
 +
 
 +
* Mooring/[[Anchoring]]
 +
** Permanent anchor
 +
** [http://en.wikipedia.org/wiki/Sea_anchor Sea Anchor]
 +
* [[Station Keeping]]
 +
** Using propulsion to continuously adjust position
 +
 
 +
==How to keep a group of Seasteads together.==
 +
If a group of Seasteads just want to stay near each other but not bump into each other while they mostly drift around a [http://en.wikipedia.org/wiki/Gyre gyre], then kites and sea anchors could be enough. The right kind of kite can pull to the left or right of downwind by something like 75 degrees, or any angle in between.
 +
 
 +
See Also:
 +
 
 +
[[Connections]]
 +
 
 +
{{Structure Designs}}

Latest revision as of 20:21, 27 July 2017

How to move a Seastead.

Flettner's spinning bodies are spinning vertical cylinders, which propel the vessel thanks to the Magnus effect.
The Magnus effect can also be used with the sea current. If the Seastead spins while in a current, it creates a whirlpool of around itself, and experiences a force perpendicular to the line of motion and away from the direction of spin. As far as I know, there is no application of this to water current, although the Kutta-Joukowski theorem states the force is proportional to the density of the fluid, that is 60 times larger.

How to keep a Seastead in place

How to keep a group of Seasteads together.

If a group of Seasteads just want to stay near each other but not bump into each other while they mostly drift around a gyre, then kites and sea anchors could be enough. The right kind of kite can pull to the left or right of downwind by something like 75 degrees, or any angle in between.

See Also:

Connections


Structure Designs
Structure requirements · PintStead · Spar · Semi-submersible · Submersible · Boats · Collaborative Design · Space Frame · Low Cost Seastead · Conex dumbbell · Docks ·
Materials
Materials · Thin Shell Ferrocement · Concrete · Geopolymer · Basalt
Engineering Data
Low Cost Wave Tank · Scale models · Wind Loads · Seasteading Software
Stability & Propulsion
Stability · Propulsion · Station Keeping · Gyroscopes · Stabilizers · Pneumatically Stabilized Platforms · Connections