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1 instructors official training aid

2 WIND WINDOW

3 FIGURE OF EIGHT Power Zone Flying the kite in a figure of eight is how you generate power

4 WIND DIRECTION Off Shore Cross Off Shore Cross Off Shore Cross Shore Cross Shore Cross On Shore Cross On Shore On Shore

5 KITE SIZE TO WIND SPEED 22 mph 18 mph 14 mph 10 mph kite sizes will vary depending on flyer s weight

6 KITE SIZE FLAT PROJECTED 12 metres 9 metres When a kite is flat all of its surface area is measured When a kite is projected only the area that catches wind is measured

7 ASPECT RATIO HIGH ASPECT LOW ASPECT D EP LEADING EDGE T H LEADING EDGE Aspect Ratio = length of leading edge depth of kite Low Aspect Ratio = 3 Medium Aspect Ratio = 4/5 High Aspect Ratio = 6

8 BOARDS TWIN TIP MUTANT DIRECTIONAL

9 POINTS OF SAILING UP WIND DOWN WIND ACROSS WIND WIND

10 WEATHER: PRESSURE SYSTEMS Low Pressure = warm, wet and windy High Pressure = fair, dry and light winds wind blows in slightly LOW anti clockwise HIGH clockwise wind blows out slightly Wind always blows from HIGH pressure to LOW pressure.

11 WEATHER FRONTS COLD FRONT WARM FRONT cold air heavy rain warm air cold air drizzle

12 WHERE WEATHER COMES FROM ARCTIC POLAR MARITIME POLAR CONTINENTAL Wind is described by where it comes from A northerly wind comes from the north An arctic wind comes from the arctic TROPICAL MARITIME ARCTIC AND POLAR = COLD TROPICAL = WARM MARITIME = WET CONTINENTAL = DRY TROPICAL CONTINENTAL

13 BEAUFORT SCALE OF WIND FORCE Beaufort Number General Description Sea State Velocity in knots 0 Calm Sea like mirror less than 1 1 Light Air Ripples formed, no foam 1-3 crests. 2 Light Breeze Small wavelets, short but more 4-6 pronounced. Crests glassy but do not break. 3 Gentle Breeze Large wavelets, crests start to 7-10 break. Foam glassy, scattered white horses. 4 Moderate Breeze Small waves becoming longer, fairly frequent white horses. 5 Fresh Breeze Moderate waves, more pronounce long form, many white horses, some spray. 6 Strong Breeze Large waves start to form, extensive white foam crests, spray. 7 Near Gale Sea heaps up, white foam from breaking waves starts blowing in streaks along wind direction. 8 Gale Moderately high waves in greater length, crests break off in spindrift, foam blown in well-marked streaks

14 SEA BREEZE sun heats the land heat rises off the land and begins to cool temperature of sea is cold in comparison to heated land warm air is replaced by cold air coming off the sea An on shore sea breeze is most prevelant in spring afternoons when the land is warm but the water is still cold.

15 TIDES The gravitational pull of the SUN and the MOON control the tides. When the sun and moon are in line they form SPRING tides and when they are adjacent they form NEAP tides. SPRING TIDES NEAP TIDES high tide is very high high tide is moderaterly high low tide is moderaterly high low tide is very low SPRING TIDES NEAP TIDES

16 TIDAL AFFECTS RULE OF TWELTHS High Tide The majority of the tide comes in during the 3rd and 4th hour. The majority of the tide goes out during the 9th and 10th hour. Low Tide Hours

17 RIGHT OF WAY Rider leaving the beach has right of way over rider coming in. Starboard (right) has right of way over Port (left). Memory tip: There is a little red port left in the bottle. Port side is left and signalled by the colour red. Upwind rider must take kite up, downwind rider must take kite down.

18 RISK ASSESSMENT FORECAST - What is the wind strength and direction? TIDE - What time is high and low tide and what are the local affects? BEACH - Is it suitable? DON T SAIL ALONE!! IF IN DOUBT, DON T GO OUT!!

19 WIND AFFECTS The length of a wind shadow is 7 times the height of the building it flows over.

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