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TAM 5 Has landed
bzant writes "TAM 5 The model airplane, (see our previous story), has successfully landed in Ireland. This was the second plane they launched. Other than some slow speeds and a concern over a lean fuel mixture the flight seemed to go as planned."
This was a great project. I know we've all had daydreams of building autonomous flying machines, and I wonder how many of us have also daydreamed of a small autonomous submersible? I think that a tiny submarine would be just as exciting to see cross the Atlantic although a bit slower.
The primary benefit of a vehicle that uses the water as its transport mechanism is that it can't crash! It could stay a few dozen meters below the surface for optimum travel speed and emerge from the water at intervals to update its position by GPS and wire that and other data such as temperature, atmospheric pressure, wind speed, and the like back to the crew on land.
Once nice side effect of traveling in such a dense medium is that a great deal of instrumentation weight would be okay since it's easy to make things float in water. The same cannot be said of the air! That means it might be possible to use a device like a gyroscope to keep track of heading while under the surface. Try loading something like that onto an RC airplane and you'll need some big wings.