JOINT SERVICE PARACHUTE CENTRE NETHERAVON CANOPY CONTROL The

JOINT SERVICE PARACHUTE CENTRE NETHERAVON

CANOPY CONTROL

The Aim To teach you how to achieve a SAFE controlled descent and landing

Ram Air Parachute System (RAPS)

Ram Air Parachute Characteristics Highly manoeuvrable Rectangular in shape Forward speed of 20 - 25 mph (depending on body weight) Turns quickly Can glide long distances

How the Canopy Works Aerofoil shape - wing design Open cell front allows air to be rammed in Produces a Semi-rigid wing Low & high pressure create lift

Ram Air Parachute - Modes of Flight Toggle Full Drive Toggle Half Brakes Full Brakes

How The Canopy Turns Toggles are attached to steering lines Steering lines are attached to the tail

Full Depression Turns Rapid loss of height Dangerous close to ground Continuous turns cause fast spirals

Warning Don, t spiral below 1500 ft

Any Questions?

Wind Drift Indicator Length & weight Thrown from 2500 ft Simulates a student canopy J/M can determine the correct opening point

AIRCRAFT RUN IN ---------------------WIND DIRECTION STUDENT CROSS

WIND DIRECTION

AIRCRAFT RUN IN ---------------------- WIND DIRECTION W D I OPENING POINT

• HOLDING • RUNNING • CRABBING • WIND LINE

ANY QUESTIONS?

Flight Drills 1. Check canopy 2. Pump brakes twice 3. All round observation

LOOK UP AROUND DOWN

4. Locate the DZ Not necessarily over the DZ Depends on wind speed Use reference points to locate DZ Move to holding area

HOLDING AREA

5. Assess Drift Over holding / play area Hold into wind Assess the wind strength

ANY QUESTIONS?

Flight Drills 1. Check canopy 2. Pump brakes twice 3. All round observation 4. Locate the DZ (move to holding area) 5. Assess wind

Experiment If the wind conditions are not too strong, carry out the following exercises (over DZ) 360 left turn 360° right turn 3 practice flares

During Your Flight Always Remember: - All round observation Altitude awareness Location of the PLA

The Landing Pattern

LANDING PATTERN (left-hand circuit) Play Area (up wind)

LANDING PATTERN (left-hand circuit) Play Area _ _ __ _ _ 0 ft _ Downwind Leg_ 100 _ _ _ __ _ (up wind)

LANDING PATTERN (left-hand circuit) Play Area __ _ _ __ __ Base Leg _ _ 500 ft _ _ _ 0 ft _ Downwind Leg_ 100 _ _ _ __ _ (up wind)

LANDING PATTERN (left-hand circuit) Play Area __ _ _ 0 ft _ Downwind Leg_ 100 _ _ _ __ __ Base Leg _ _ 500 ft _____ Final Approach 300 ft _ (up wind)

UPWIND HOLDING AREA D O W N W I N D L E G 1000 FT

UPWIND HOLDING AREA D O W N W I N D 1000 FT L E G 500 ft BASE LEG

UPWIND HOLDING AREA F I N A L 1000 ft D O W N W I N D L E G 500 ft BASE LEG A P P R O C H 300 ft

Landings Smooth flare from full flight (10 ft, 2 - 3 sec's from the ground)

• If you flare too high - keep the toggles depressed & adopt the PLF position • If you flare too low - flare quickly & PLF

ANY QUESTIONS?

Flight Drills 1. Check canopy 2. Pump brakes twice 3. All round observation 4. Locate the DZ (move to holding area) 5. Assess drift

Experiment

The Landing Pattern

Turbulence Causes: thermals wind deflected over buildings Effects: canopy buffeting Cure: fly on third brakes until through turbulence

Common Problems (Nuisance Factors)

Toggle Released Prematurely Release other toggle and carry on with flight drills

SLIDER UP PUMP TOGGLES TWICE

END CELL, CLOSURE & SLIDER UP PUMP TOGGLES

TWISTS CHECK CANOPY KICK OUT OF TWISTS GRASP TOGGLES

ANY QUESTIONS ?