# Help with physics project

1. Mar 15, 2008

### selvator

Desert Island Rescue Problem

You are the crew of cargo plane carrying goods for PB
plc, a large industrial wholesale company. Whilst
travelling through a storm your plane is forced to make
a crash landing on a small isolated island. Most of the
equipment on the plane has been damaged by the
landing and only a few rudimentary components
remain useable. Air traffic control knows you are
missing but does not know where you are. You
therefore need to build some kind of rescue beacon.
[Students are provided with a list of equipment
salvaged from the plane. The list includes two rescue
beacons but no power sources.]

First Stage Brief
You begin to explore the island. Your survival
situation doesn’t seem too bad: there is plenty of fruit
and seafood to hand and the climate seems balmy
with a pleasant sea breeze to keep you cool. Water
was a problem at first but you’ve discovered a type of
vine which yields fresh water when cut. You’re left
with the issue of being rescued. How can you attract
attention? If only you could find a way to power those
rescue beacons …
Presentation: Power generation proposals

Second Stage Brief
Wind power seems the most viable method of
powering your beacons. You work on finding out
whether you can make anything from the salvaged
materials. Your attempts to keep a fire going on the
beach are failing due to the damp climate. You begin
to tire of raw seafood and fruit, but can’t find anything
else that is palatable.
Presentation: Designing and Building a Test Device
for the Beach

Third Stage Brief
There is little wind on the beach where you have
landed, not enough to power either of the beacons. In
efforts to find alternative sources of food, you attempt
to scale the mountain to the north. The ascent is too
difficult to complete with the equipment you had with
you, but you noticed that the wind was strengthening
as you climbed. Could the mountain be a good place
some rudimentary climbing gear out of the water
vines. Send a team up the mountain to find out the
wind strength, while the rest of you work out how your
‘beach device’ will perform with a stronger wind.
Presentation: Preparing for the Mountain

Fourth Stage Brief
It’s time to take your beacons up the mountain. The
ascent will be tough going and you only have the
energy and ropes to climb up twice. Conditions on the
summit are such that you can only spend about
quarter of an hour there at a time. You will have to
leave your beacons there running unattended day and
night until you are rescued.

Fifth Stage Brief
realize you may have to look for a different and more
reliable power source if you are to make the most of
your chances for rescue. But there is good news:
looking out from the summit of the mountain, you see
a modest river running to the north. Some freshwater
fish would be a very welcome change of diet, and it
looks as if there is a waterfall and pool. A wash would
be nice, too. Hmm…running water.
Presentation: Crash Survivors Tell of their struggles
to Attract Attention

heres the catch i need to build my generator from specific items that i salvaged from the crash
Heres the list:
two rescue beacons(no power source)
aircraft right horizontal stabilizer
a piece of plywood that is a piece of the tail
passenger seats
life jackets
food tray
aircraft tire
8 pieces of aluminum and fiber
id card
4.9ft long piece of wing
fuel spill
flash light
jackknife
sectional air map of the area
plastic raincoat
magnetic compass
compress kit with gauze
.45 caliber pistol
parachute
bottle of salt tavlets
1 quart of water per person(2 people)
pair of sunglasses
1 top coat per person
cosmetic mirror

could u guys help me with a proposal for a power generator enough to generate about 12V for a ELT(Emergency Locater Transmittor)