Presentation on theme: "WAGA X-Country Lectures En-Route Decisions. 2 What’s here? What’s the best Secret for Success When to start? What ring setting to use? What speed."— Presentation transcript:
2 What’s here? What’s the best Secret for Success When to start? What ring setting to use? What speed to fly? What thermals should we take? What changing conditions can we expect? When should we dump water ballast?
5 When to start? 4000 feet above ground level for your first X-countries 3000 feet AGL if you are desperate to go far 6000 feet AGL if you want to go fast but you have to start at 3280 feet (1 KM) to set records.
7 What thermals should we take? In the best part of the day, only the best the best way to increase your x-country speed is to increase your climb rate use other gliders as visual variometers if they are doing better than you join them
8 Ring Setting Rule of thumb should be half your best average rate should be the reading that you leave the thermal and the minimum strength that you take the next thermal if under 3000 feet AGL, wind back to 1 Knot.
10 Inter-thermal Speed Control Generally McCready averages a speed Some guns fly constant speed (Ingo) then slow to 60 knots looking at lift then back to thermalling speed when decision is made to take it be fussy about what you take fly fast in sink, fly slow in lift
11 Watch for Changing Conditions Around 3-3.30pm get high, stay high 3 o’clock pause often happens because air mass gets homogeneously hot then convection resumes normally Watch out for late afternoon increase in lift usually in the pre-seabreeze mini-trough plan for a sea-breeze final glide
12 Water Ballast +3 knots = keep it -3 knots = lose it Finally another hot tip: