GIN Boomerang 10 - Manual (Page 17)

17 /62 Boomerang 10
Accelerated flight
Once you have become accustomed to flying the Boomerang 10, you can practice using the speed
system, which allows improved glide in headwinds and greater penetration in strong winds.
When flying accelerated the glider reacts much faster to a collapse. Also the glider reacts more
radically when a collapse happens during accelerated flight compared to flying at trim speed.
Apply the speed system by pushing the speed bar progressively with your feet. Avoid flying
accelerated near the ground, and be careful using the accelerator in turbulence.
If you do encounter a collapse while using the accelerator, immediately step off the bar
completely before taking any other corrective actions.
B-Riser control
The Boomerang 10 responds very nicely to B-riser control. With the speedsystem applied the B
risers can be pulled backwards towards the pilot to directly control the angle of attack of the
glider. Pulling backwards pitches the wing nose-up, increasing the angle of attack, and reduces
the chordwise compression in the sail from the lines, making the wing more tuck-resistant. The
control movement is subtle and fluid, and only small movements are required. It is important to
recognize how much B-riser movement is needed to return the glider to trim speed. The riser-
limiters provide a good indicator of when trim speed is approached, making it clear when the
maillons are getting close to level (which is a sensible limit to the amount of B-riser control
that should be applied). B-riser control can be used to fluidly pilot the wing through turbulence
by controlling pitch. The aim should be to control pitch so that the wing stays directly above
you. B-riser control can also be used for steering. It is good practice to always glide with gentle
tension applied to the B-risers (pulling them backwards about 5cm) so that you can feel the
inputs from the wing. Those inputs warn you when turbulence is coming, but also allow you to
feel the lifty side of the wing – when the tension on the B-riser on one side increases, pull back
on that side to turn slightly towards the lifting air. Following lifting lines using the B-risers
this way can make a huge difference to flight performance and gives the Boomerang 10 pilot a
very satisfying feeling of being connected to the air movements. A pilot fully in tune with the
Boomerang 10 can use these B-riser inputs to follow the lifty lines that lead to the cores of
thermals.
Turns
With the Boomerang 10, Gin Gliders has developed a glider which reacts immediately to
steering input and is extremely responsive. The Boomerang 10 performs best in turns when it is
flown with sufficient speed and weight-shifting. Too much braking increases the sink rate.
The Boomerang 10 has minimal negative tendency, but nevertheless the glider’s high aspect
ratio and dynamics on tight turns and centering near slopes take some time to get used to. You
should therefore maintain enough distance from slopes and observe safety margins during your
first flights until you are familiar with the Boomerang 10’s steering.