striling walking beam working engine

This is a set of plans for a Stirling “hot” air engine. It incorporates a “walking beam” to transfer mechanical actions from one part of the engine to the other. The walking beam is on the upper half of the engine and looks like an old weight scales. Walking beams were quite common on early steam engine of the 1800’s. In this research, a gamma-type, low-temperature differential (LTD) solar Stirling engine. Click the link and make a working model

idea-2 school project: wind turbine model

wind turbine model :
This wind turbine model makes its electricity with a simple generator which produces pulses of current, or
alternating current. It does so by passing strong magnets over coils of fine wire. Each time a magnet passes
over a coil, the coil becomes energized with electricity. With 4 coils connected together in series, the result is a
quadrupling of the voltage.
This is the simplest and possibly most efficient way to generate electricity, and is the same basic principle used
in almost all wind turbines, even the large scale commercial ones. The electricity from a wind turbine varies with the wind speed, so to make practical use of it, you must be able to store it in batteries, or change it into a form that gives a stable, constant voltage. Usually, electricity from wind turbines is converted from alternating current to direct current, which can be used for battery charging.

click the link below to down load pdf file

https://docs.google.com/fileview?id=0ByemygYrOVAdMmI1MTM0YzctNGUyMC00ZjFmLWJkNjMtZDlkZTBmY2I1NjYy

idea-1 Archimedes' Screw pump

Archimedes' Screw pump While in Alexandria, he invented a device now known as Archimedes' screw . It was first used to pump water out of ships and was later used in irrigation. This type of water pump is still used in many parts of the world today. Its very simple project model for viii and ix. A long, helical pipe if tilted 45 degrees and the lower end is inserted in water then Rotating the pipe moves water up to and out the top.