Test of the hover controller, in particular in yaw direction (multicopter frame, i.e. roll direction in airplane frame). The yaw is stabilized using the flaperons which are in the propeller wash. The flaperon deflections are visible when Chris pokes the kite with the broom. The controller quickly reacts and stabilizes smoothly the yaw angle back to zero. Note that differential propeller directions as used for small multicopter-drones do not offer nearly enough yaw moment for control authority of the kite's inertia or expected wind loads. In addition, such a control scheme greatly reduces the thrust for yaw stabilization. This is why this is not feasible for our system.

0

0

0

1,039

The Royal Malta Yacht Club hosted its second race of the 2025 season on Saturday evening, when the Thomas Smith Triple Handed Night Race took place. The short handed race began in very light winds, with a shifty breeze and an easterly swell setting the stage for a testing night on the water. As the fleet made its way up the coast, towards the tuna pens outside St. Paul’s Bay, competitors had to navigate higher angles, gybe frequently, and deal with unpredictable wind conditions, particularly close to the fish farms which had to be navigated by most in pitch dark.

0

0

0

50

Join us in Poros, Greece! After work and rain delays, we're finally exploring the city. We'll grab breakfast, find a pool noodle for our anchor buoy, and delegate the clock tower climb. No shopping, just adventure! #PorosGreece #GreekAdventure #TravelVlog #CityExploration #AnchorBuoy #ClockTower #IslandLife #TravelCouple #NoShopping #EuropeTravel

0

0

0

269

Catamarans are the perfect boats to dry out on a beach, or, as many do in tidal areas (including ourselves), use a half tide drying mooring. If the boat has daggerboards then sensibly the rudders should lift to avoid damage, especially if the tide/wind causes waves when refloating. I have used the method seen in this video for 40 years. Very simple and works easily. Please note that this boat is over 30 years old, and I had never tried to lift the rudders with one hand before! Hence the initial hesitation. They would lift more easily if the shafts were greased. A simple snap hook holds the rudder up. Some people use "dinghy style" lifting rudders but that means the blades stick out behind the boat, which has often led to breakages when in a crowded anchorage and unsuspecting dinghies pass in the night. This rudder system works exactly like a conventional semi-balanced rudder when it in the down position. And has the advantage that the whole rudder can be taken off the boat by simply undoing one bolt. And no shaft leaks either! The thin ropes led through blocks to a cleat on the tiller are connected to the outboard. So the engine turns with the rudders, significantly increasing manouverability! I write more about steering systems on my website, see here https://www.sailingcatamarans.com/index.php/19-faqs/sailing-and-performance-questions/109-which-steering-system-should-i-use

0

0

0

2,003

Teil 1 unserer Hafentraining-Serie „Ablegen mit Bug zum Steg“. Sauberer Start: Backbord-Vorleine klarmachen, Leinenende knotenfrei, Kopfschlag runter – dann läuft das Manöver kontrolliert. Der Pechmoment (trotz guter Vorbereitung) kommt in einem späteren Teil. Hafentraining & Termine: https://sporedo.de/dl/intensiv-hafentrainings-in-holland/ #hafentraining #hafenmanoever #ablegen #segeln #skippertraining

0

0

0

1,403