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![1.8W generating solar panels x 2 [Image: AA-Space Systems, Inc. 2003]](../solar.jpg)
Portable & Renewable Energy Projects
Article posted: 1st March 2004 
Solar Panels The AA Institute is working toward a long term goal of "clean" and renewable energy for powering all its space science research projects. Progress to date includes extensive utilisation of either on-board or ground based "solar electric propulsion" to power all mobile robotic and aerospace electronics. As of March 2004, the 6 solar panels I have produce a combined power output of approx. 5.5 watts. Mainly used for ongoing day time charge/night time dissipation of sealed Lead-Acid, Ni-Cad and Ni-MH cells that power electronic sensors and devices permanently installed to act as security deterrents for AA Institute projects. These panels are additionally used to charge batteries for use in various electronic gadgets and experimental projects, e.g. the remote launch ignition facility (RELIF) and phase-2 micro rover are prime applications utilising solar-charged batteries during their test phase. The clock drive motors which guide my 8-inch Newtonian telescope are also powered using a solar-charged 12v sealed Lead-Acid battery. The two larger solar panels each measures 8.5cm x 29.0cm = 246.5 sq cm = 0.02465 sq meters of effective cellular surface area collecting light and produces an output of 150 mA @ 12 volts = 1.8 watts. Therefore, the average output from this class of solar panel is 73 watts per square meter. Each of these two large panels cost GBP 15.00. Therefore the average cost is GBP 10.00 per watt of power (this is the benchmark budget for future AA Institute investments in solar-electric power). Portable Gas applications Use of compact, portable gas appliances in space science applications which require thermal testing (e.g. rocket propulsion), is currently under investigation...
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