Transcript Lifter - University of Hawaii - Department of Electrical Engineering

By,
Justin Carland,
Indar Lange,
Ryan Matsui
Overview
• A Lifter is an asymmetrical capacitor which uses
High Voltage ( > 20KV ) to produce a thrust.
• Equivalent to a RC circuit.
• Lifters work without moving parts, flies silently,
uses only electrical energy and is able to lift its
own weight plus some additional load.
• Lifter is 3.7g and the distance between the wire
and aluminum is 2.9cm
• Theories behind our lift
– Ionic-Wind
– Biefeld-Brown effect
– Electrogravitics
Synopsis of Lifter Topics
• The initial goal was to study the
reasons why our lifter was able to
oppose gravity and lift with no
moving parts.
–
–
–
–
Shape/surface area (stability)
Wire and foil distance (arcing)
Wire type (consistent plate separation)
Resistors load
Chapters of Lifter Project
•
Spark gap adjusted fixed
lift
•
Blew on lifter, to finally get
it to lift. After that it
always lifted
•
Lowered the load resistance
from 10M ohms to 4M
ohms
•
Construction of the Lifter is
very tedious.
•
Having the right distance
between connections so the
lifter works properly.
•
Efficiency on building new
lifters
• Damaged power supply
– We think the polarity to
the battery was inverted.
– Provide more protection
to the circuit/power
supply. Preventing
surges or wrong
polarity.
• Collecting data and more
efficient way to collect,
with more accurate data.
• Any outstanding
problems and suggestions
for future improvements.
• Problems collecting
accurate data…
Power Supply
•
•
•
•
Input = 12DC
Converts to 35kV
Regulates current (AC)
Variable Spark gap
Problems collecting data
What we have done
• We have constructed multiple working lifters.
• Recently troubleshot and repaired our power
supply.
• Collected data on our working lifters to
compare and better understand their
operation.
• Examined the effects of ionic wind
Gantt Chart
Gantt Chart
5-Oct
Full Working Lifter
Completed
Testing & Troubleshooting
Completed
Experimenting
19-Oct
2-Nov
16-Nov
8-Dec
Completed
Completed
Engineer and Improve
DEMO
• If you would look carefully up
front, we will now demonstration of
our project.
Questions?
THE END!