WEIGHT ANALYSIS

The World's most Advanced Autonomous Solar powered Trimaran

Snav planet earth lattitude and longitude grid

 

The initial weight analysis and subsequent structural analysis will determine the thickness and type of materials to be employed in any design. The approximate figures above are guidelines to be reduced if possible, once the hull has been tested and stressed for loadings in various sea states.

 

Any naval architect will tell you that this is a significant challenge. If at all possible, we do not want to use composites, if by clever design we can use more cost effective materials. In this case aluminium in the preferred material because it is easy to form, weld and repair while at sea. Please note that our consortium is looking for additional risk sharing and collaborative partners for this project. We do not at this time have a supplier of aluminium sheet or welding consumables. 

 

 

ITEM

KILOGRAMS

DESCRIPTION

HULL

 7,000

5383 Aluminum

WINGS

 3,000

ACTIVE ARMS

 3,500

5383 Aluminum

PV CELLS 

 3,000

BATTERIES

 3,000

E MOTORS incl transmission

    500

WIND GENS incl boom

 1,000

NAVIGATION instruments

    400

SENSORS & computers

    500

GLASS

    200

HYDRAULICS

 1,000

LIFE SUPPORT

    800

______

TOTAL

23,900kg    (23.53 tons)

                                

 

 

SolarNavigator autonomous robot boat, front elevation

End and Plan elevations of the SolarNavigator robot ship © design copyright 2013

Max Energy Ltd  (not to scale)

SolarNavigator autonomous robot boat, plan view

 

Solarnavigator is an Autonomous trimaran robot with an extremely 

efficient active hull. This ship is designed to comply with COLREGS and demonstrate the additional layer of safety that the Snav hard/software might offer to fleet operators and port controllers worldwide.

 

 

 

DEVELOPMENT MODEL WEIGHT ANALYSIS - EUREKA

 

The same procedure is used to determine the mass of a vessel whether it is a model or a full size ship. The following is a rough guide or starting point from which the actual hull parts and components are being weighed in as they are made, or sourced, etc. It is an interesting time, with one eye firmly on the scales. There have been some heart stopping moments already, needing double checking.

 

Our tests will mostly be conducted in fresh water which at 1 kg/liter means that our model must displace 17.26 liters when ballasted. As we are building hulls of different diameters, the targets change from one variation to another. See the wooden buck below used to validate the active outriggers.

 

 

ITEM

KILOGRAMS

DESCRIPTION

Hull spaceframe

 1.30

Aluminium

Hull active arms x 2

 .80

Alloy

Hull main hull

 1.96

Aluminium

Hull cones x 6

 1.00

Composite

Hull outriggers x 2

 .88

Alloy

Hull helm developments x 2

 2.00

Aluminium

Hull foils x 4

 1.00

Aluminium

Wings honeycomb

 .55

Composite

Wings frames

 .50

Alloy

 

HULL subtotal

 9.99

 

PV CELLS 

 .34

Polycrystalline

BATTERIES  (radio control & navigation)

 0.25

Lithium

BATTERIES (storage)

    0.00

(12.75% = 2.178 kg ballast add)

E MOTORS including transmission

    1.00

WIND GENS including boom

 1.25

NAVIGATION instruments

    .50

AUTONOMOUS sensors

    1.50

COMPUTERS

    0.50

ACTUATORS

 0.50

PAINTS

  0.25

2 pack

_____

TOTAL

(35.44 lbs)    16.08

(17.26 kg ballasted - 38.04lbs)

 

 

 

 

 

Email: Email Max Energy Ltd Max Energy Ltd 

 

or phone UK:   + 44 (0) 1323 831727    +44 (0) 7842 607865

Max Energy Ltd in association with Bluebird Marine Systems Ltd

Solar House, BN27 1RF, United Kingdom

 

 

 

 

AUTONOMOUS PROJECT LINKS

 

Alloys

Paints - Coatings

Autonomy - Computers - Software

Project Estimates

Batteries

Project Objectives

Composites

PR Events - 

Construction - Modular

Propeller

Diving - Hull survey & repair

Record Attempt

Electronics - Collision Avoidance COLREGS

Screens - 

Galley - 

Solar Arrays - tracking theory PIC PCB  MPPT PV trackers  Actuators & circuits

Hydraulics - Active hull - 

Stealth - Scorpion laser - Mine hunter

Hull Design - Capsize - SWASSH - Lubrication - Mass

Timber - 

Life Support - 

Tank Testing - Open water collision avoidance

Model ConstructionHulls - Wings - W'gens - ROV - AI

Tooling - 

Motors - DC v AC synchronous

Transmission - gearing & prop shaft/seals

Navigation  - Oceanographic Hydrographic Surveying

Treasure hunting - marine archaeology

Paints - Antifouling

Wind Turbines -

 

 

 

Automate UK, London seminar 26 February 2013

* The title "autonomous" is open to interpretation and should first be defined. We are taking the view that an autonomous ship is one that could carry out a mission without humans onboard, if regulations so permitted.

 

 

 

This website is copyright © 1991- 2013 Electrick Publications. All rights reserved. The bird logo and names Solar Navigator and Blueplanet Ecostar are trademarks ™.  The Blueplanet vehicle configuration is registered ®.  All other trademarks hereby acknowledged and please note that this project should not be confused with the Australian: 'World Solar Challenge'™which is a superb road vehicle endurance race from Darwin to Adelaide.  Max Energy Limited is an educational charity working hard to promote world peace.

 

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