AIRCRAFT OPERATING INSTRUCTIONS – VIRUS 912 S-LSA GLIDER
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7.6.8 Deployment of GRS rescue system.
System description
The GRS rocket charged parachute rescue system provides you with a chance
to rescue yourself from an unexpected situation. The system is placed inside a
durable cylinder mounted on the right hand side of the baggage
compartment. Inside this cylinder is the parachute which stored inside a
deployment bag with a rocket engine underneath. This brand new design
deploys a canopy that is not gradually drawn from the container, exposed to
distortion by air currents, but it is safely open after 0,4 to 0,7 seconds in
distance of 15-18 meters above the aircraft. It is carried there in a special
deployment bag, which decreases the risk of aircraft debris fouling the
canopy. The parachute rescue system is activated manually, by pulling the
activation handle mounted on the back wall above. After being fired, the man
canopy is open and fully inflated in about 3.2 seconds.
WARNING!
Activation handle safety pin should be inserted when the aircraft is parked or
hangared to prevent accidental deployment. However, the instant pilot boards the aircraft,
safety pin MUST be removed!
Use of parachute rescue system
Typical situations for use of the parachute rescue system are:
structural failure
mid-air collision
loss of control over aircraft
engine failure over hostile terrain
pilot incapacitation (incl. heart attack, stroke, temp. blindness, disorientation...)
Prior to firing the system, provided time allows:
1.
shut down the engine and set master switch to OFF (key in full left position)
2.
shut both fuel valves
3.
fasten safety harnesses tightly
4.
protect your face and body.
To deploy the parachute jerk the activation handle hard to a length of at least 1 foot
towards the instrument panel.
Once you have pulled the handle and the rocket is deployed, it will be about two seconds
before you feel the impact produced by two forces. The first force is produced by a
stretching of the system risers. The second force follows from the inflation of the
canopy. It will seem to you that the aircraft is pulled backwards briefly. The airspeed is
reduced to zero, and the aircraft now starts to descend underneath the canopy.
As the pilot, this is likely a new experience, and you should know that the phase following
parachute deployment will be a great adventure for the crew. You will be in a situation
for the first time, where a proper landing and the determination of the landing site are
out of your control.
