2. Table Of Contents
The DC electric Motor
Operation
Advantages
Disadvantages
The Gyro Advantage
Gyro Stabilization
Communication with
Ground
Types of Control
Works Cited
3. The DC Motor
Have two small
magnets
Made from iron and
cobalt alloys
Usually Lithium-ion
Best weight to power
storage ratio
They are brushless
motors
4. Operation
The First Magnet has a
bunch of copper coils
around it acting like a
stator
Electromagnets
change polarity due to
an integrated inverter
The changing polarity
causes the rotor with
magnets to spin
5. Operation:
The second magnet is a
rotor.
The changing polarity
causes the rotor with
magnets to spin
6. Operation:
The Rotor applies the torque to
the blade
No needed gear boxes!!!!
Saves a lot of Weight!!!
7. Operation
The entire assembly is
powered by a small
battery
Varies with size
Externally Recharged
Battery life is limited
10-20 minutes
Lead acid, Nickel
Cadmium, or Lithium
Polymer
8. Operation
The motor assembly is
held together in a
motor housing
Protects fragile
components
Adds extra weight
Creates Durability
11. Disadvantages
With a battery pack,
overall thrust to weight
ratio can be worse than
a fueled engine
Battery life is limited
Cost can be prohibitive
as thrust increases
12. Gyro Stabilazation
The motor can be
connected to an
onboard computer
(Attopilot)
The Attopilot uses 3
gyros (one for each
axis) and GPS to
determine how much
power should be
applied to each DC
motor.
13. Communication
Downlink- transmit to
ground
Uplink-transmit to UAV
Transmits GPS data,
speed, altitude to a
moving map on ground
station computer
The operator/computer
uses this information to
determine power to
each motor
Can be used on Ipad or
Smart Phone
14. Types of Control
With an electric motor,
it is easy to set up flight
with a program to assist.
Manual control-relies
solely on operator
Enhanced Manual
Control- Operator is
assisted by gyro
stabilization, PS
downlink or other
means
Autonomous Control-
UAS flies to waypoints
at specific altitudes with
no operator input
