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Showing content with the highest reputation since 03/01/2010 in Blog Entries

  1. 1 point
    Ok team, here goes my first blog post. My goal here is to build a Digital Flight Control System (DFCS) for my UFO using a sonar range sensor as opposed to the wand. The design needs to completely mimic the performance of the wand system currently in the boat. The system needs to be fully removable to allow for One Design Racing if desired. A few design guidelines... Improvements to current control system: 1) Sensing wave terrain out ahead of the boat 2) Not engaging the mainfoil flap until the boatspeed hits 7 knots to reduce drag while floating 3) Toggle settings for upwind vs. downwind (maybe a button press?) 4) Data acquisition 5) Auto rear foil rake adjustment (this is a maybe feature, this would be lots of extra hardware for limited improvement) Questions to answer: 1) Do I need a GPS to get good boat speed or is the accel, gyro, magnetometer IMS good enough? 2) How and where will I couple the servo to the flap control push rod 3) How big a challenge will marinization be? Is enough to buy waterproof parts and a waterproof box? 4) Is it useful to have more than two sonar sensors to create an accurate map of oncoming wave motion? Does wave motion traveling orthogonal to the direction of the boat matter? Or are waves going so slow compared to the speed of the boat that it doesn't matter? Design Philosophy: I will endeavour to use parts that have excellent tutorials available online. I will be concerned about the cost of my time even when it costs a bit more money to buy parts that are easier to integrate. Basic Block Diagram Below: https://drive.google.com/open?id=1fPYXJLlrcZufAwTNtmjy9HG_BbAYtpas
  2. 1 point
    So, Saturday marked the final day of the Western Circuit, steering the Rekerring Dream, Ker32. Pretty decent showing for inaugural regatta - 5/2/3/3/2/3 in a fleet of 9 well sailed boats. The Esses were harder to beat on the first (lighter), weekend but we had the measure of them last Sat. Bill Bremner's Foxy was on fine form- scoring a string of firsts with Sarab Singh's Windsikher only getting Bill once as far as I remember. It was nice to take a few races off Windsikher actually, since that boat (S40IRC) is moded for the light stuff and has 8ft more hull than us. Our starting was really good and we were getting there with the numbers up and down. Considering the level of the crew pre-regatta, I was pleased with the way we were turning corners, however that is the area where we can make the most improvement. Nice bunch of guys - Jon (Bow), Piffy (Mast), Sam (Pit), Nev / Zhen (Trim), Woody (Main), Me (Helm), Varney (Nav), although I was re-christened 'Krueger' by the end of the regatta because I was beasting them around the coarse! The biggest surprise for me was the after-sail, which was done really well. SMU were taking it really seriously, with excellent media coverage - masses of free piss and bands, dancing girls, prizes, auctions - you name it! Several banquets as well! Good effort Singapore - highly impressed!
  3. 1 point
    Source: 65- by 32-foot catamaran 3200sqft of living space
  4. 1 point
    I’m learning how to sail, taking lessons from a local yacht club on a river. Class meets three evenings a week, for four weeks. When I got there, I had trouble finding where the lessons were being held. Two other people were also wandering around. We found a woman by the pool who told us where to go. The class (14 students in all) was practicing tying knots. I was given a length of rope and shown how to tie a bowline and a figure-eight. We were told to take the rope home to practice with. There are four instructors, most of whom are volunteers. Instruction is somewhat informal. I used to be a teacher and I would have made handouts for the students. But that takes time, and volunteers are already donating time. Very glad to have my copy of Sailing for Dummies to refer to. Many people are not auditory learners; they need to see words and diagrams to remember things. The boats that will be used for the class are Zumas, Lasers, JY 15s, and a Capri 22. The instructors rigged up a Laser, a Zuma, and a JY 15, explaining the different parts of the boats, and showing where the equipment is kept. We were advised to purchase our own personal flotation devices, and given some suggestions as to what clothing and shoes to wear. I’ve been practicing my knots, and will go shopping today for my gear. Any advice before I go out on the water?
  5. 1 point
    I'm a sailor at 19 years. i have been sailing for 10 years. before I started sailing i was playing football. when i was playing football there was an sailor in my class, that I and the other football-players was bullying. but a day when i said to him, that it not was hard to sail and it was really like shit to be a sailor, He sayed; "what do you know about sailing, and I was blank. so I started sailing and then it was fun and I keepped on sailing. AND I LOVE IT!!, but now i'm beeing bullyied. Bullying is the use of force or coercion to abuse or intimidate others. The behavior can be habitual and involve an imbalance of social or physical power.It can include verbal harassment orthreat, physical assault or coercion and may be directed repeatedly towards particular victims, perhaps on grounds of race, religion, gender, sexuality, or ability. If bullying is done by a group, it is called mobbing. The victim of bullying has been referred to as a "target".
  6. -1 points
    "Now I am a Milan fan, I wish Milan Champions League qualifiers through the test, and then played better in the league. Balotelli and Chaaraoui the envy of all the teams is another player, Pacini also excellent striker,Vancouver Canucks jerseyRobinho is being restored. give Chaaraoui suggestions? Allegri will, I want to give my players suggest he is already a champion player, and I believe he will play better and I bless Milan, a team can qualify group stage, traveling and working with them will be fantastic and I really hope to Allegri coach and train a team of a few good players. " "When this kind of racial discrimination on the pitch when Toronto Maple Leafs jersey the ugly things that we should not give condoned, the referee might not hear, I remember in Milan and Rome in the game, the referee Rocchi doing very well." "I'm a very good relationship with Allegri, we all love Milan and now everybody call me coach, but also good, I'm glad his position, but I still need to do more work cheap nhl jerseys to deserve in Milan. Champions League for us it is a great motivation to participate in the Champions League would be fantastic. "
  7. -1 points
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