propulsion system design...............

Discussion in 'Propulsion' started by ruminame, Jan 6, 2010.

  1. hoytedow
    Joined: Sep 2009
    Posts: 5,856
    Likes: 398, Points: 93, Legacy Rep: 2489
    Location: Control Group

    hoytedow Carbon Based Life Form

    I worked 7 years as a draftsman and engineering assistant at an electric car company, so I've paid my Greens dues. I am saying learn basic principles before opting for exotic configurations.
    Some of us actually value internal combustion for a set of reasons, not the least of which is power achieved relative to weight on board.
  2. kistinie
    Joined: Aug 2007
    Posts: 493
    Likes: 8, Points: 0, Legacy Rep: -74
    Location: france

    kistinie Hybrid corsair

    I had answered your question yesterday in a hard technical way.
    This morning message is gone

    Administrator, please look sharp, there may be a black hole in the site.
    Hope it is the last time
    To encourage you to, i will repeat it again.

    Honestly when i think to the tons of fuel i have burnt i my car and the poor efficiency of ICE compare to

    Nuclear power
    Stirling motor
    Steam Quasi turbine
    Magnet motor

    i hardly can beleive what you say about weight.
    I decided to go to electric on WINGOVER for weight reasons too.
    For a boat needing an equivalent of a 9 Hp diesel, Electric was lighter than the ICE equivalent.

    Can you show us a few numbers that prove what you say here ?
  3. ruminame
    Joined: Dec 2009
    Posts: 30
    Likes: 1, Points: 0, Legacy Rep: 28
    Location: Dhaka

    ruminame Junior Member

    We are going to use normal propulsion engine would be run by oil.I am only a student of naval architecture , a amateur in this field of yacht building who is trying to learn as much as he can.So plz Guyz tell me about the basic procedure of designing propulsion & rudder system.The procedure would help me more such to design a propulsion & rudder system what are the things i should consider?????where to start from???etc
  4. apex1

    apex1 Guest

    No mate, YOU have to show US some numbers why you think Electric propulsion weight is lower than ICE ! And you cannot, because it is impossible at present!

    STOP to drivel down every other thread with your premature nonsense!

    Your reputation status clearly shows your expertise! Though it is still too good, -200 is what you deserve.
  5. hoytedow
    Joined: Sep 2009
    Posts: 5,856
    Likes: 398, Points: 93, Legacy Rep: 2489
    Location: Control Group

    hoytedow Carbon Based Life Form

    Ruminame, do you have access to any books on ship or yacht design? The fundamentals will be found in such books. Check out Skene's Elements of Yacht Design, first. But don't stop there.

  6. conceptia
    Joined: Nov 2009
    Posts: 203
    Likes: 7, Points: 18, Legacy Rep: 97
    Location: Houston

    conceptia Naval Architect

    firstly you need to find the resistance of the vessel at 15 knots. Now using this find the effective power required. now calculate the brake power using that. Use this data to design the propeller parameters(use wageninger b-series propeller chart). For rudder design use NACA 0016 profile. Get help from the faculty man...
    Last edited: Apr 27, 2010
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.