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ACCESS TO THE AIRFIELD

ACCESS TO THE AIRFIELD. All visitors to Sutton Bank Airfield should report to the Club Office. New Members should be escorted on to the airfield and receive a safety brief from the Club Duty Instructor before participating in any gliding activity.

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ACCESS TO THE AIRFIELD

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  1. ACCESS TO THE AIRFIELD • All visitors to Sutton Bank Airfield should report to the Club Office. • New Members should be escorted on to the airfield and receive a safety brief from the Club Duty Instructor before participating in any gliding activity. • Hazards on the airfield include tractors, launching ropes and cables, aircraft propellers, and glider winches.

  2. GLIDING SAFETY Discuss: Conduct on the airfield. Who’s who? Lookout and listen out. Propellers Flight logging and overdue action Fire fighting equipment Action in event of a crash on/off the airfield “There is no such thing as a stupid question”

  3. GROUND OPERATIONS Yorkshire Gliding Club Ground handling brief

  4. Parts of a Glider

  5. By pushing backwards by hand One person on wingtip to steer and act as pivot point ONLYUSE ONE WINGTIP Extra people push on leading edge near wing root Beware of jibing control surfaces when turning through wind Ensure tail wheel off ground when turning – use tail dolly or lifting handles Never lift by tailplane Moving the Glider

  6. By pulling forward by hand One person on wingtip to steer and act as pivot point Only use one wingtip Use lifting handles or tail dolly Open and hold canopy Pull on strong points in cockpit – seat straps or front cockpit edge never the canopy frame Moving the Glider

  7. By pulling forward by vehicle One person on wingtip Experienced person in car or tractor. If using car keep window open and radio off Use belly hook for towing One person walking by nose to prevent over-run Use long rope – at least half gliders wingspan Drive at walking pace Moving the Glider

  8. GLIDER LAUNCH SIGNALS • Signal methods: Radio “take up slack” “all out” “STOP”

  9. GLIDER LAUNCH SIGNALS • Signal methods: BAT “take up slack” - Wave bat underarm “all out” - Wave bat over-arm “stop” - Bat stationary overhead

  10. FORCES ACTING ON A GLIDER • How wing works • Total Reaction – LIFT and DRAG • Types of Drag – Zero Lift Drag and Lift Dependant Drag. • Glide Angle and Lift/Drag ratio.

  11. Air flows faster over the top of the wing – Lower pressure and suction Lift distribution roughly 70% from above and 30% from below Stagnation point is where air meets the front of the wing and stops Forces in FlightLift – How the wing works Lower Pressure Stagnation Point Higher Pressure

  12. Lift Angle of attack Drag Chord line Forces in flight Lift and drag Much more lift and little more drag

  13. Forces in flight - gliders • The total reaction is the resultant of the lift and drag. In steady flight it is opposite and equal to the weight of the glider

  14. THE FORCES BALANCE Lift acting at right angles to flight line Flight line Drag Weight W acting vertically downward

  15. Forces in FlightDrag Lift is always developed perpendicular to the relative airflow

  16. SOME COMMON MISCONCEPTIONS • DISTANCE – YGC pilots regularly travel out and back to declared destinations on trips of 200 miles or more • SPEED – Top speed180 mph 60 - 70 mph over long distances • HEIGHT – YGC record is 31000ft or 10000 metres

  17. SOARING FLIGHT • Ridge Lift and ridge flying. • Thermal lift and centering. • Mountain Waves. Height and Distance Records.

  18. TYPES OF LIFT – RIDGE LIFT

  19. TYPES OF LIFT – THERMAL LIFT

  20. Wind Wind Wind TYPES OF LIFT - WAVE CLOUD

  21. GLIDING COURSE AIM - 5 hours flying time and 10 launches Motor glider training included

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