The Design and Construction of a Less Expensive Satellite Launcher

Overview

Objectives/Goals The objective is to see if I can propel a satellite to orbital velocities using magnetic attraction. Methods/Materials The satellite launcher was constructed with a stiff tube mounted to point slightly upwards. Coils were wrapped around the tube at intervals to attract the satellite through the tube. Each coil was connected to a capacitor that is discharged by a SCR (silicon controlled rectifier) at the moment the model satellite nears the coil. This accelerates the satellite through the coil. As the nail passes the center of the coil, the charge in the capacitor dissipates, leaving nothing to hold back the satellite as it continues its journey through the tube. This process is repeated at each coil, increasing the satellite's velocity. Results Magnetic attraction can be used to propel a satellite to orbital velocities. Conclusions/Discussion I have learned many things by building this project. Friction is a major problem in this design. The friction in the tube makes it difficult to accelerate the model satellite beyond a certain point. Also, timing circuits are hard to tune and are unreliable for objects of different masses. The self-timed circuit with a phototransistor is a lot more reliable and can handle objects of different masses.

Competition history

• CSEF 2004 Electricity & Electronics · Entry J0709

Resources

• CSEF project summary ↗

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