About Iags; First Time Setup; Propeller Installation - Impossible US-1 Operating Handbook

14. 4x Foam US-1 Shipping Protectors (Not Pictured)

3.5 About IAGS

The Impossible Aerospace Ground Station (IAGS) provides complete
flight control, telemetry and HD video decoding during flight. Mis-
sion planning is included for autonomous operations and repeat-
able flight patterns. For more about IAGS, please see section 7.
4 US-1 First Time Setup

4.1 Propeller Installation

The US-1 is shipped without propellers to prevent damage during
shipping. Two clockwise and two counter-clockwise propellers must
each be installed on the correct arms. The counterclockwise pro-
pellers are marked with silver at the center of the propeller hub,
and are installed on US-1's the front right and back left arms, as
indicated in section 3.
To install each propeller, use 2 propeller screws and the included
torque driver. The torque driver is preset to the correct value of 1.2
N-m.
Follow the following procedure to install propellers:
1. Using the torque driver, install each screw and tighten until
the propeller is fully seated.
2. Use the torque driver to tighten one screw a quarter turn.
3. Switch to the other screw and tighten a quarter turn.
4. Repeat steps two and three until the torque driver handle clicks
loudly and temporarily breaks free on one of the screws.
5. Switch to the other screw and tighten until the torque driver
handle clicks loudly and temporarily breaks free.
Be certain to properly torque propeller screws. Turn until the
torque driver clicks and stop turning. Under or over torqued pro-
pellers represent a significant hazard and could come off in flight.
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