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Practical XC
Snapping the Rubber Band
Waypoints
● Anxiety
● Challenges
● Preparation
● Planning
● Leaving the Nest
● Lift
● Speed to Fly
● Goals and Tasks
● When to turn around
● When to give up
● The Landout
● Flight Computers
● Position Reporting
● Seen from the backseat
● Ground based exercises
● Air based exercises
● Final Tips
● Resources
Anxiety
● It's Normal
● Minimize, don’t try to eliminate
● How?
● Skills: landing, wind detection, thermalling
● Weather and forecasting
● Friends for retrieve
Challenges
● Long distances without a motor?
● Extremely brain intensive
● High rate of decision making over long periods
● Complex chess game
● Requires thinking multiple moves in advance
● Always having backup plans
● Situational awareness and observation
Preparation - Scientific Method
● Soaring is science
o With a dash of luck and some faith
● Hypothesis - There will be a thermal at that peak
o Because: Sun, Wind, Clouds, etc...
● Test: Fly to that peak
● Results: lift/no lift
● Evaluate results
o Wind, sun, clouds
o Timing? Sometimes you are just early/late in a cycle
Preparation - Your Trailer
● Tow car ready (keys present, gas full, gas money)
● Road ready
o tires in good shape
o lights work, registration current
o everything secure (tools, doors, equipment)
● Tidy
● Tools and equipment for derigging
● you know how to rig and derig with this trailer
Preparation - Your Glider
● Comfortable
o pads, pedals, position
o you need to be able to fly for 3-5hrs comfortably
● Relief system
● Water, food, stuff accessible
● Batteries, equipment, good to go
Preparation - You
● 2+ hr flights normal
● Thermal Skills
o Comfortable in tight thermals
o Optimizing climbs (seeking the core)
o Predicting sources of lift, not just lucky
o Aware of wind and drift, using that to find lift sources
● Wind Detection - surface winds are most important
o ponds, dust, smoke, drift in thermals
o birds along ridges far below
Preparation - You - 2
● Landing skills
o Comfortable using any runway.
o Left/Right cross is no problem, always on centerline
o minimum energy touchdowns
● Radio skills - phraseology, comfort level, awos, ctaf
● Landout Kit (water, tie downs, blanket, signal mirror…)
● Crew retained
o Buddy up, have backups
Preparation - You - Tools
● Flight recorders
o XCSoar
o portable handheld GPS
o phone/tablet w/gps with IGC recording software
o Nano
o See You Mobile
o Oudie
o Glide computer in the glider
o … Lot’s of options
Preparation - You - Debrief Tools
● Debrief Tools
o OLC onlinecontest.org - web
o See You, IGC Replay - PC
o GammaFV - Mac
● Performance parameters
o average climb rate - higher is better
o # thermals - lower is better
o % circling - lower is better
o effective L/D or efficiency - higher is better
Planning
● Have routes in mind, scope them out
● Weather - pick a good day, don't wait for epic
o clouds? great!
o lift to 7k in the mountains, 5k in the valley
o light winds, decent convergence forecast
● Peers - fly when others are flying
● Coordinate retrieve buddies
● Launch time? turn around time if coming back?
● Goals? Minimums? Successful Outcomes?
Planning - Goals and Timelines
● Goals
o How far?
o What turnpoint(s)?
● Launch time?
o When will it be good enough to go?
o Work backwards from when you need to be back.
o Do you have enough time?
● Turn around time if coming back?
o Just a little bit farther… Great way to land out.
o Winds? Headwind or tailwind going home
Planning - Minimums and Success
● Conservative minimums
o I won’t go on final glide without 1000ft over pattern…
o I won’t thermal below 1000agl, I will commit to land.
o I won’t go over unlandable terrain without fields 10:1
or less away…
● Success
o Safe landing
o Convenient landing location
o Completed my task
Leaving the Nest
● Myth: There is only lift around the gliderport
● Truth: In the same airmass, the lift will probably be
pretty similar.
● Myth: I have to get to 8k at Avenal before I can head
out.
● Truth: You only need to keep a safe conservative glide
to a good landing.
● Myth: The best path is a straight line.
● Truth: Rarely is the best route directly on your course
Leaving the Nest 2
● Head out a little bit.
● Get a thermal, head a little farther, no thermal, come
back.
● If one path doesn’t work, try something different.
● At some point, you will be unable to glide straight back
to Avenal. You’re now going XC.
● Losing glide to Avenal is snapping the rubber band.
● There is a freedom that comes with being beyond glide
of the home airport. Enjoy it. Settle into the rhythm.
Lift - Finding Thermals
● Know the surface wind, know the sun angle
● Look for wind shadow areas with direct sun
● peaks with multiple gullies/spines
● ridges perpendicular to the wind
● tractors, farm houses, cattle troughs, small ponds
● Start your search downwind of a suspected trigger
● Track along ridges, closer to the front as you get lower
Wind Shadows and wind flow
Multiple ridges/gullies -- EL5
Multiple ridges/gullies -- EL4
Track towards ridge face with loss of
height
Lift - Working Thermals
● Primary lift source for XC
● 270 entry to compensate for cruise speed
● Centering
o 40-45 degree banks, consistent bank angle
o consistent airspeed
o small adjustments 1-2 seconds of reduced bank
● Get ambidextrous left/right turns
o ridgelines
o other pilots, you can’t always turn the way you want
270 Entry from cruise to thermal
Inconsistent speed/bank
inconsistent
bank or
speed
Consistent
bank and
speed
Small adjustments
6 second
correction
2 second
correction
Lift - Convergence
● Not a continuous line of lift
● A line of occasional lift and often much stronger and
higher reaching thermals
● Follows ridgelines, pushes farther down valleys
● Think of water flowing and being divided by ridges
● Can be more turbulent. Mixed up, confused thermals
● Half up/half down
● Little to no wind on the ground
● Often can be run along for miles without circling
Lift - Ridge and Wave
● Ridge not used for XC typically (out here)
● Wave - XC possible. Adventurous in the blue.
● Wave is where you find it.
o Often can thermal into wave
o Will influence thermals. damping them or improving
o 15kts of wind is plenty for some wave events
● Lenticulars often just look like a line of cu from below
● Regularly spaced lines of cu across the wind might be
rotor cu if downwind of a trigger
Speed to Fly
● Keep it simple 3 main speeds (low, med, fast)
o known as block STF
● Increase to cruise speed in your last thermal turn
● Slow down in extended lift lines
● Slow down for lift, not for expected lift
● Speed up in sink
● Speed up in a headwind if on a final glide
● Resist the temptation to extreme porpoise
o usually less efficient
Goals and Tasks
● Start small. Triangles around the airfield that keep you
within glide of Avenal are excellent training tasks.
o practice glides, thermal entry, thermal prediction
● Build up to longer and longer flights.
● Do laps of shorter courses, use fewer thermals, skip
thermals
● Silver distance.
o Avenal to Lost Hills.
o Avenal, Orchard Peak, Old Coalinga 50km leg...
When to turn around
● Often we fly out-and-return.
● Have a turn around time. Respect it.
● Have a final glide height and distance in mind based on
the day.
● Have a sense of when the day will die
● Have a sense of if the day is as forecast (some days go
long, some die early, be aware of how it is trending)
● Know if you will have headwinds or challenges to
expect on the run home. (crossing 41/46 valleys)
When to give up
● Never give up, never surrender !!!WRONG!!!
● Set conservative minimums, adhere to them
● As you start to sink out, identify specific LZ options
● Do not focus on landing until you need to.
● Move towards LZs, seeking lift of course
● If it is an airport, switch to that frequency, broadcast
position and intention (5H 1 mile west, maneuvering)
● Stay situationally aware, stay focused on finding lift
while you are above minimums.
The Landout - off airport
● At 1000ft you should be at your LZ.
● wind, slope, obstacles, backup plan determined
● Fly around your field as you start your approach. View
from all sides.
● Look for poles, you likely won’t see power lines
● Look for fences or lines of taller weeds, dirt built up
● Slope? Land uphill. Favor uphill over into the wind in
most cases.
● Other risks? Squirrel holes, livestock, pipes, obstacles
The Landout - off airport part 2
● Fly a normal pattern, most accident reports don’t start
with “The pilot flew a standard pattern…”
● Keep your pattern wide enough. Give yourself room and
time to see things and adjust.
● Touch down at minimum speed. Airbrakes mostly
closed if length isn’t a factor.
● Brake firmly to stop quickly. Wings level till stopped.
Assuming landing into the wind.
● Breathe, relax, take a pic(of the clouds in the
background), your crew will come get you
Flight Computers
● Why Last? You need to be able to fly XC without one.
● Everyone uses them. Greatly reduces mental load.
● Get one. Oudie or Dell Streak. Run XCSoar for free.
● Learn it by simulation and playing back flights
● Learn how to ignore it.
● Set it up so you touch it as little as possible
● They lie! They know idealized performance. They
know circling wind. They don’t know what you might
see out the window.
Flight Computers - Tips
● Track Up Cruise, North Up Circling
● Long Track display
● Wind Drift off (especially for wave)
● Wind speed/direction
● Distance/bearing to waypoint
● Thumb Rule: Use MC4 as a safety factor, fly slower.
● Double check winds before final glide
● Monitor glide trends
o glide getting better or worse
Position Reporting
● Callsign, Altitude, Distance, wpt, Bearing, Heading
o 5H, 6500ft 22 miles NW Avenal, northbound
● Refine for more precision as required
o 5H, 6400 22.4 miles from Avenal bearing 300,
northbound
● Use GPS waypoints
● Use unmistakable landmarks
● If you can see a landmark, you aren’t over it
● No position report is probably better than a bad one.
Ground based exercises 1
● Always be scouting landout locations
● Driving along look at fields.
o Could I land here?
o How would I approach?
o Slope? Prevailing winds? Obstacles
Ground based exercises 2
● Radio calls
● Practice out loud, in the car, in the shower
o Avenal traffic, glider 5H entering left downwind
runway 31, Avenal
o Coalinga traffic, glider 5H on a 3 mile 45 for left
traffic runway 1, Coalinga
o Get used to the key phrases and timing
Ground based exercises 3
● Watch birds
o Thermalling, gliding, hunting, landing, taking off.
o How does a hawk hunt? hint: usually into the wind
o How does a hawk on glide from the top of a thermal
look?
Seen from the back seat - Thermals
● Poor speed control (aka pitch)
● Constantly decreasing bank angles
● Cross controlling
● Lack of coordination
● Death grip on the stick
● Not speeding up before exiting lift
● Staying too long when already high
● Not developing a plan while circling
o Suddenly at cloudbase without an idea
Seen from the back seat - Glides
● No plan
● No backup plan, no backup to the backup
● Wandering, getting pushed around
● Not flying the right speed
● Always turning one way
● Death grip on the stick
● Not using trim
● Anti-STF, slow in sink, fast in lift
Air based exercises 1
● Fly with purpose towards a point
o Note if the air is trying to knock you away from your
intended point.
o Lean into lifting wings
● Don’t let the air decide your path
● Have a reason for going to that point
o I saw a bird or a dust devil
o Sun and wind favor that slope
o The terrain is just like where I got my last climb
Air based exercises 2
● Determine 3 speeds to fly based on
o Weak lift, good lift, strong lift
o When leaving one thermal, fly your speed
o Make it easy on yourself. 55/65/75
o Based on the polar of your glider and your wing
loading
● When in doubt, don’t slow down
o Porpoising often less efficient
Air based exercises 3
● Don’t waste time searching if you are high
o If you think you hit a thermal, start a turn, if it fades,
roll back on course or try chasing it the other
direction a little ways.
o Don’t throw good altitude away on a bubble
● Build your confidence in finding other lift
o Leave before it gets too weak.
o Speed up in lift before exiting the thermal
Final tips
● When in doubt
o A few knots faster is better than a few slower
o A steep bank is better than shallow
o A safe landing is better than risk taking
● Practice on every flight
● Debrief every flight, even if it is just mentally
o How would you have improved things?
● Apply the scientific method to finding lift
Resources
Google Earth file for Hollister waypoints
soaringweb.org -- turnpoint files
onlinecontest.org

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Practical xc

  • 2. Waypoints ● Anxiety ● Challenges ● Preparation ● Planning ● Leaving the Nest ● Lift ● Speed to Fly ● Goals and Tasks ● When to turn around ● When to give up ● The Landout ● Flight Computers ● Position Reporting ● Seen from the backseat ● Ground based exercises ● Air based exercises ● Final Tips ● Resources
  • 3. Anxiety ● It's Normal ● Minimize, don’t try to eliminate ● How? ● Skills: landing, wind detection, thermalling ● Weather and forecasting ● Friends for retrieve
  • 4. Challenges ● Long distances without a motor? ● Extremely brain intensive ● High rate of decision making over long periods ● Complex chess game ● Requires thinking multiple moves in advance ● Always having backup plans ● Situational awareness and observation
  • 5. Preparation - Scientific Method ● Soaring is science o With a dash of luck and some faith ● Hypothesis - There will be a thermal at that peak o Because: Sun, Wind, Clouds, etc... ● Test: Fly to that peak ● Results: lift/no lift ● Evaluate results o Wind, sun, clouds o Timing? Sometimes you are just early/late in a cycle
  • 6. Preparation - Your Trailer ● Tow car ready (keys present, gas full, gas money) ● Road ready o tires in good shape o lights work, registration current o everything secure (tools, doors, equipment) ● Tidy ● Tools and equipment for derigging ● you know how to rig and derig with this trailer
  • 7. Preparation - Your Glider ● Comfortable o pads, pedals, position o you need to be able to fly for 3-5hrs comfortably ● Relief system ● Water, food, stuff accessible ● Batteries, equipment, good to go
  • 8. Preparation - You ● 2+ hr flights normal ● Thermal Skills o Comfortable in tight thermals o Optimizing climbs (seeking the core) o Predicting sources of lift, not just lucky o Aware of wind and drift, using that to find lift sources ● Wind Detection - surface winds are most important o ponds, dust, smoke, drift in thermals o birds along ridges far below
  • 9. Preparation - You - 2 ● Landing skills o Comfortable using any runway. o Left/Right cross is no problem, always on centerline o minimum energy touchdowns ● Radio skills - phraseology, comfort level, awos, ctaf ● Landout Kit (water, tie downs, blanket, signal mirror…) ● Crew retained o Buddy up, have backups
  • 10. Preparation - You - Tools ● Flight recorders o XCSoar o portable handheld GPS o phone/tablet w/gps with IGC recording software o Nano o See You Mobile o Oudie o Glide computer in the glider o … Lot’s of options
  • 11. Preparation - You - Debrief Tools ● Debrief Tools o OLC onlinecontest.org - web o See You, IGC Replay - PC o GammaFV - Mac ● Performance parameters o average climb rate - higher is better o # thermals - lower is better o % circling - lower is better o effective L/D or efficiency - higher is better
  • 12. Planning ● Have routes in mind, scope them out ● Weather - pick a good day, don't wait for epic o clouds? great! o lift to 7k in the mountains, 5k in the valley o light winds, decent convergence forecast ● Peers - fly when others are flying ● Coordinate retrieve buddies ● Launch time? turn around time if coming back? ● Goals? Minimums? Successful Outcomes?
  • 13. Planning - Goals and Timelines ● Goals o How far? o What turnpoint(s)? ● Launch time? o When will it be good enough to go? o Work backwards from when you need to be back. o Do you have enough time? ● Turn around time if coming back? o Just a little bit farther… Great way to land out. o Winds? Headwind or tailwind going home
  • 14. Planning - Minimums and Success ● Conservative minimums o I won’t go on final glide without 1000ft over pattern… o I won’t thermal below 1000agl, I will commit to land. o I won’t go over unlandable terrain without fields 10:1 or less away… ● Success o Safe landing o Convenient landing location o Completed my task
  • 15. Leaving the Nest ● Myth: There is only lift around the gliderport ● Truth: In the same airmass, the lift will probably be pretty similar. ● Myth: I have to get to 8k at Avenal before I can head out. ● Truth: You only need to keep a safe conservative glide to a good landing. ● Myth: The best path is a straight line. ● Truth: Rarely is the best route directly on your course
  • 16. Leaving the Nest 2 ● Head out a little bit. ● Get a thermal, head a little farther, no thermal, come back. ● If one path doesn’t work, try something different. ● At some point, you will be unable to glide straight back to Avenal. You’re now going XC. ● Losing glide to Avenal is snapping the rubber band. ● There is a freedom that comes with being beyond glide of the home airport. Enjoy it. Settle into the rhythm.
  • 17. Lift - Finding Thermals ● Know the surface wind, know the sun angle ● Look for wind shadow areas with direct sun ● peaks with multiple gullies/spines ● ridges perpendicular to the wind ● tractors, farm houses, cattle troughs, small ponds ● Start your search downwind of a suspected trigger ● Track along ridges, closer to the front as you get lower
  • 18. Wind Shadows and wind flow
  • 21. Track towards ridge face with loss of height
  • 22. Lift - Working Thermals ● Primary lift source for XC ● 270 entry to compensate for cruise speed ● Centering o 40-45 degree banks, consistent bank angle o consistent airspeed o small adjustments 1-2 seconds of reduced bank ● Get ambidextrous left/right turns o ridgelines o other pilots, you can’t always turn the way you want
  • 23. 270 Entry from cruise to thermal
  • 26. Lift - Convergence ● Not a continuous line of lift ● A line of occasional lift and often much stronger and higher reaching thermals ● Follows ridgelines, pushes farther down valleys ● Think of water flowing and being divided by ridges ● Can be more turbulent. Mixed up, confused thermals ● Half up/half down ● Little to no wind on the ground ● Often can be run along for miles without circling
  • 27. Lift - Ridge and Wave ● Ridge not used for XC typically (out here) ● Wave - XC possible. Adventurous in the blue. ● Wave is where you find it. o Often can thermal into wave o Will influence thermals. damping them or improving o 15kts of wind is plenty for some wave events ● Lenticulars often just look like a line of cu from below ● Regularly spaced lines of cu across the wind might be rotor cu if downwind of a trigger
  • 28. Speed to Fly ● Keep it simple 3 main speeds (low, med, fast) o known as block STF ● Increase to cruise speed in your last thermal turn ● Slow down in extended lift lines ● Slow down for lift, not for expected lift ● Speed up in sink ● Speed up in a headwind if on a final glide ● Resist the temptation to extreme porpoise o usually less efficient
  • 29. Goals and Tasks ● Start small. Triangles around the airfield that keep you within glide of Avenal are excellent training tasks. o practice glides, thermal entry, thermal prediction ● Build up to longer and longer flights. ● Do laps of shorter courses, use fewer thermals, skip thermals ● Silver distance. o Avenal to Lost Hills. o Avenal, Orchard Peak, Old Coalinga 50km leg...
  • 30. When to turn around ● Often we fly out-and-return. ● Have a turn around time. Respect it. ● Have a final glide height and distance in mind based on the day. ● Have a sense of when the day will die ● Have a sense of if the day is as forecast (some days go long, some die early, be aware of how it is trending) ● Know if you will have headwinds or challenges to expect on the run home. (crossing 41/46 valleys)
  • 31. When to give up ● Never give up, never surrender !!!WRONG!!! ● Set conservative minimums, adhere to them ● As you start to sink out, identify specific LZ options ● Do not focus on landing until you need to. ● Move towards LZs, seeking lift of course ● If it is an airport, switch to that frequency, broadcast position and intention (5H 1 mile west, maneuvering) ● Stay situationally aware, stay focused on finding lift while you are above minimums.
  • 32. The Landout - off airport ● At 1000ft you should be at your LZ. ● wind, slope, obstacles, backup plan determined ● Fly around your field as you start your approach. View from all sides. ● Look for poles, you likely won’t see power lines ● Look for fences or lines of taller weeds, dirt built up ● Slope? Land uphill. Favor uphill over into the wind in most cases. ● Other risks? Squirrel holes, livestock, pipes, obstacles
  • 33. The Landout - off airport part 2 ● Fly a normal pattern, most accident reports don’t start with “The pilot flew a standard pattern…” ● Keep your pattern wide enough. Give yourself room and time to see things and adjust. ● Touch down at minimum speed. Airbrakes mostly closed if length isn’t a factor. ● Brake firmly to stop quickly. Wings level till stopped. Assuming landing into the wind. ● Breathe, relax, take a pic(of the clouds in the background), your crew will come get you
  • 34. Flight Computers ● Why Last? You need to be able to fly XC without one. ● Everyone uses them. Greatly reduces mental load. ● Get one. Oudie or Dell Streak. Run XCSoar for free. ● Learn it by simulation and playing back flights ● Learn how to ignore it. ● Set it up so you touch it as little as possible ● They lie! They know idealized performance. They know circling wind. They don’t know what you might see out the window.
  • 35. Flight Computers - Tips ● Track Up Cruise, North Up Circling ● Long Track display ● Wind Drift off (especially for wave) ● Wind speed/direction ● Distance/bearing to waypoint ● Thumb Rule: Use MC4 as a safety factor, fly slower. ● Double check winds before final glide ● Monitor glide trends o glide getting better or worse
  • 36. Position Reporting ● Callsign, Altitude, Distance, wpt, Bearing, Heading o 5H, 6500ft 22 miles NW Avenal, northbound ● Refine for more precision as required o 5H, 6400 22.4 miles from Avenal bearing 300, northbound ● Use GPS waypoints ● Use unmistakable landmarks ● If you can see a landmark, you aren’t over it ● No position report is probably better than a bad one.
  • 37. Ground based exercises 1 ● Always be scouting landout locations ● Driving along look at fields. o Could I land here? o How would I approach? o Slope? Prevailing winds? Obstacles
  • 38. Ground based exercises 2 ● Radio calls ● Practice out loud, in the car, in the shower o Avenal traffic, glider 5H entering left downwind runway 31, Avenal o Coalinga traffic, glider 5H on a 3 mile 45 for left traffic runway 1, Coalinga o Get used to the key phrases and timing
  • 39. Ground based exercises 3 ● Watch birds o Thermalling, gliding, hunting, landing, taking off. o How does a hawk hunt? hint: usually into the wind o How does a hawk on glide from the top of a thermal look?
  • 40. Seen from the back seat - Thermals ● Poor speed control (aka pitch) ● Constantly decreasing bank angles ● Cross controlling ● Lack of coordination ● Death grip on the stick ● Not speeding up before exiting lift ● Staying too long when already high ● Not developing a plan while circling o Suddenly at cloudbase without an idea
  • 41. Seen from the back seat - Glides ● No plan ● No backup plan, no backup to the backup ● Wandering, getting pushed around ● Not flying the right speed ● Always turning one way ● Death grip on the stick ● Not using trim ● Anti-STF, slow in sink, fast in lift
  • 42. Air based exercises 1 ● Fly with purpose towards a point o Note if the air is trying to knock you away from your intended point. o Lean into lifting wings ● Don’t let the air decide your path ● Have a reason for going to that point o I saw a bird or a dust devil o Sun and wind favor that slope o The terrain is just like where I got my last climb
  • 43. Air based exercises 2 ● Determine 3 speeds to fly based on o Weak lift, good lift, strong lift o When leaving one thermal, fly your speed o Make it easy on yourself. 55/65/75 o Based on the polar of your glider and your wing loading ● When in doubt, don’t slow down o Porpoising often less efficient
  • 44. Air based exercises 3 ● Don’t waste time searching if you are high o If you think you hit a thermal, start a turn, if it fades, roll back on course or try chasing it the other direction a little ways. o Don’t throw good altitude away on a bubble ● Build your confidence in finding other lift o Leave before it gets too weak. o Speed up in lift before exiting the thermal
  • 45. Final tips ● When in doubt o A few knots faster is better than a few slower o A steep bank is better than shallow o A safe landing is better than risk taking ● Practice on every flight ● Debrief every flight, even if it is just mentally o How would you have improved things? ● Apply the scientific method to finding lift
  • 46. Resources Google Earth file for Hollister waypoints soaringweb.org -- turnpoint files onlinecontest.org