Transcript Lifter - University of Hawaii - Department of Electrical Engineering

By,
Justin Carland,
Indar Lange,
Ryan Matsui,
Derek Hanson
Overview
• The Lifter is an asymmetrical capacitor which uses
High Voltage ( > 20KV ) to produce a thrust.
• Basically a RC circuit
• The Lifter works 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
Block Diagram
Load
12V Battery
On / off
Power Supply
Battery
Charger
Lifter
(Object)
Team
(viewers)
Power Supply
• Input = 12DC
• Converts to 35kV
• Regulates current
(AC)
• Variable Spark gap
Experimental Topics
• Increase lifter size will increase force
– Better weight to lift ratio
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Clean smoother lifter/better build
Amount of Thrust lifter makes
Different styles of lifters
Vacuum Test
Turn lifter upside down and see if it goes down.
Experiment with no tethers and different wire
heights
• Change lifter design to different fabrications
– Controlled Experiments with designs to
conduct different test
– Outdoor experiment
Problems
• Spark gap adjusted fixed lift
• Blew on lifter, to finally got it to lift. After
that it always lifted
• Passing the Potential Well
• Lowered the load resistance from 10M ohms
to 4M ohms
• Construction of the Lifter is very tedious.
• Having the right distance between
connections so lifter works properly.
• Efficiency on building lifter
LIFTER VIDEO
What remains to be done
• Collect data, Calculate (ionic force, thrust,…)
• Find out how much Voltage/current our power
supply is producing.
• Experiment with different lifters, and compare
differences
• Analyze cause of lift
• Determine Max lifter height, weight, and thrust
• Test in vacuum
• Engineer different structural design
Gantt Chart
Gantt Chart
5-Oct
Full Working Lifter
Completed
Testing & Troubleshooting
In Process
19-Oct
2-Nov
Collect Data & Experiment
In Process
Engineer and Improve
In Process
16-Nov
8-Dec
Questions?
THE END!