Paragliding ground work: Dave working, in fairly tricky thermic conditions, at Glenshee car park on 'Taxi' to launch before we headed up the hills for some nice TTB flights, filmed on Murray's head cam.
If you 'pull the A risers (only)' in this type of location/conditions (behind a sharp change from steep slope to flat car park = airflow is ABOVE the ground so the wing needs to 'peel' UP from the ground and meets most of the wind ONLY once the leading edge is 3-5 ft above the surface) the wing's leading edge will tend to to 'roll over' in the early/mid launch stage... and go fully frontal once the wing is above the pilot!
It is important to EASE OFF any A's during the mid-launch phase.
When you watch me doing a 'Lazy & Efficent' launch you can (with luck/camera angle!) see how little of the launch is done with the A's 'pulled'/ and how little amount of A's are 'pulled'/ and how much of the 'launch arc' I have the A's eased off!
Note: on comp wings post 'bounce' (wing about to head up and FORWARD of my mass)) its (rough guide) A's on... Ease Off (35-55*)... Ease a little on (70-80*) ending with the comp wing up about (95-105*) up and ready to continue into gliding flight :-)
Why he didn't pull the A risers (only) and rise the wing till the zenith point!? He lose 10 min. without lunching..... :D
best regards!
Kostaaa8 2 years ago
If you 'pull the A risers (only)' in this type of location/conditions (behind a sharp change from steep slope to flat car park = airflow is ABOVE the ground so the wing needs to 'peel' UP from the ground and meets most of the wind ONLY once the leading edge is 3-5 ft above the surface) the wing's leading edge will tend to to 'roll over' in the early/mid launch stage... and go fully frontal once the wing is above the pilot!
It is important to EASE OFF any A's during the mid-launch phase.
murrayhay 2 years ago
When you watch me doing a 'Lazy & Efficent' launch you can (with luck/camera angle!) see how little of the launch is done with the A's 'pulled'/ and how little amount of A's are 'pulled'/ and how much of the 'launch arc' I have the A's eased off!
Note: on comp wings post 'bounce' (wing about to head up and FORWARD of my mass)) its (rough guide) A's on... Ease Off (35-55*)... Ease a little on (70-80*) ending with the comp wing up about (95-105*) up and ready to continue into gliding flight :-)
murrayhay 2 years ago