Alpha Unmanned Systems ALPHA 800, Руководство по техническому обслуживанию самолета

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COMMERCIAL IN CONFIDENCE
DEV ‐ M ‐ MM A800 V1.7
MAINTENANCE MANUAL
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Step 3 – Damage is often seen on the blade tip. This photo
shows tip of a blade which, although it has only light damage,
must be replaced.
Step 4 – Blades must be balanced both as a pair and individually
and must also have the same center of gravity. Check that both
blades weigh the same. This photo shows a special blade
balancing tool with a pair of tail blades being checked.
Step 5 – The main blades must also balance perfectly in order to
minimize vibration. This photo shows a special spirit level type
tool being using to check that the main blades are balanced.
Important: blades must be replaced with new, identical items as
supplied by Alpha. Blades must always be replaced as pairs.
Step 6 – When replacing blades in the blade grips ensure that
they are fitted the correct way round: tail blades always rotate
clockwise (as viewed from the right side of the UAV), but main
blades must rotate anti ‐ clockwise in ALPHA 800 (as viewed from
the top side of the UAV).
Step 7 – The blade grip must be tightened adequately. For main
blades, a good rule of thumb is as follows: lift the helicopter
pitch up to vertical and gently jerk the helicopter downwards,
the blades should not move.
Step 8 – Tail blades must also be tightened adequately. Again
they should maintain their position when the tail rotor is
rotated, but it should be possible to move them in the tail blade
grip with gentle finger pressure.
Name Part Number IPC Page
Tail Blade 010164240 3
Main Rotor Blades 010162200 1
Tail Blade Grip 010164252 7
Main blade holder 010162216 2