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So it’s no wonder that our tester, Alyce Tassoni, was very excited to try the new side-by-side Nuna trvl™ dubl from the cult-favorite brand, with her 15-month-old twins.
Being both portable and able to generate wind speeds of between 140–270 miles per hour (63–121 m/s) and air volumes of 14 m 3 per minute, the leaf blower has many potential uses in amateur construction projects. [citation needed] The leaf blower originated in 1947 as a backpack fogger apparatus, invented by Japanese-based Kyoritsu Noki Company.
The main changes to the Nuna 4 from its predecessor the Nuna 3 are a steering wheel instead of levers, an upright seat instead of the driver lying down and a smaller solar panel of 6 m 2 compared to the previous 9 m 2. These changes were necessitated by changes in the rules prompted by alleged safety concerns and attempts to make the car more ...
The increased low wind capabilities of optimized, modern devices enable downwind steering down to 1.3 m/s apparent wind and 1.5 kn of boat speed [8] [9] – properties that make an electronic steering device nearly redundant and enable crossing the doldrums under wind vane self-steering. An increasing number of long distance regatta sailors are ...
It consists of a girdle-like contraption that is worn around the body, with a hook for attachment. [1] Hooking-in the harness is done by pulling the sail toward the body and hooking into the harness lines on the boom. The harness turns windsurfing into a long lasting activity, taking the weight of the sail off the arms of the windsurfer.
A windsurfing boom.. A boom, in the context of windsurfing, is a piece of equipment that attaches to the mast, providing structural support for the sail.It completely encircles the sail, and is designed to be gripped, allowing the sailor to control the sail for normal sailing, and also for almost any type of maneuver (such as gybing, tacking, and waterstarting).
The passive yaw systems utilize the wind force in order to adjust the orientation of the wind turbine rotor into the wind. In their simplest form these system comprise a simple roller bearing connection between the tower and the nacelle and a tail fin mounted on the nacelle and designed in such a way that it turns the wind turbine rotor into ...
An aerostat-type wind power system relies at least in part on buoyancy to support the wind-collecting elements. Aerostats vary in their designs and resulting lift-to-drag ratio; the kiting effect of higher lift-over-drag shapes for the aerostat can effectively keep an airborne turbine aloft; a variety of such kiting balloons were made famous in the kytoon by Domina Jalbert.