AirDesign PURE III, Manual And Service Book

Page: 40 / 73

39
The aim of active flying is to keep the glider above the pilot’s head in all situations by
responding correctly to the glider's movements, using the brakes and weight shift.
When entering a strong or rough thermal it is important that the glider is not too far back or
able to enter a dynamic stall. To avoid this, it is often helpful to release the brakes slightly
when entering, which gives the glider a little more speed. Equally, when exiting a strong climb
it may be necessary to brake more to prevent the glider from diving forward.
B-Riser Control
An alternative or even better option to control the PURE2 is to do it via the B-Risers. For a
easier grabbing the B-risers have got a handle on it.
When pulling down the B-risers the glider can be stabilized and actively flown. Like this the
glider can be kept on track or the glider can be controlled.
The advantage by using B-riser control compared to active flying by brakes is that the glider
loses less speed and performance. As well the glider gets more stable.
NOTE: The use of B-riser control does not make the glider indestructible. It does not replace
proper active flying in strong turbulences.
g. Accelerating
The speed system on the PURE2 comes supplied with ‘quick hooks’ ready to attach to a speed
bar of choice. By hanging in the harness before flying, the complete speed system should be
checked to ensure it runs smoothly.
In particular, check that the speed system won’t be engaged when in normal flight.
Unnecessary knots and loops in a speed system are not recommended.
When pushing the speed bar the angle of attack of the glider is reduced. The glider speeds up
but at the same time is more sensitive to deformation.
In spite of the exceptional stability of the PURE2, any accelerated collapse will be more
dynamic than the same event experienced at trim speed, and will require quicker reactions to
maintain normal flight.
Always keep both hands on the controls when flying fast or in turbulence, and be ready to
release the speed system immediately at the first sign of a collapse.
Use the speed system carefully when flying close to the terrain and maintain enough height
from the ground or other obstacles to recover in the event of a collapse.
DO NOT BRAKE WHILE FLYING FULLY ACCELERATED – THIS MAY RESULT IN A COLLAPSE OF THE
WING.
h. Landing
The PURE2 is easy to land, however, on your first flights you may be surprised at how well it
glides. Take account of this when making your landing approach, and give yourself the
opportunity for S-turns or a longer approach than you might be used to.
For a normal, into-wind landing, evenly pull the brakes all the way down when you are close to
the ground, and straighten up to land on your feet. The glider will stop almost completely as