Hull Design: Difference between revisions
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*[https://www.austinkayak.com/blog/2012/08/a-look-at-kayak-hull-designs/ "A Look At Kayak Hull Designs" ] | *[https://www.austinkayak.com/blog/2012/08/a-look-at-kayak-hull-designs/ "A Look At Kayak Hull Designs" ] | ||
*[http://www.canoesplus.com.au/contents/en-us/d2045761055_Kayak-design-Properties-from-Canoes-plus.html "Kayak design Properties" ] | *[http://www.canoesplus.com.au/contents/en-us/d2045761055_Kayak-design-Properties-from-Canoes-plus.html "Kayak design Properties" ] | ||
*[https://www.sailmagazine.com/multihulls/a-look-at-wave-piercing-bows-on-multihulls An article with a great chart on bow design] (standard vs inverted vs axe) | |||
Revision as of 01:24, 3 August 2020
Basics
- An aspect of naval engineering related to designing the hull
- Mainly how to optimize it's geometry for the desired characteristics (stability, speed, and manuverabiliy)
- Stil in progress (Also non-expert written)
Planar Hull vs Displacement Hull vs Semi Displacement Hulls
- Planar is essentially flat, and planes over most of the water at target speed due to lift, thus reducing drag significantly (the extension of this is the hydrofoil)
- These are limited by the square–cube law and thus there are no large planar hull ships
- Displacement Hulls Push Through the Water, and tend to be thin near the bow so as to "slice" more effectively
In relation to small craft
- Plotting + math here related to the OS Kayak and other small stuff
- Seems to be the more flat the hull is the easier it is to turn and to "get going" as well as max speed
- This comes with the downside of less stability (ie ease of "tipping over" due to little resistance to roll), and it is harder to passively hold a direction (called "tracking" ? ) (after paddling it will not stay in that straight line)