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In Case You Missed it
Wind Tunnel
The aerodynamics of an airplane sometimes don't cooperate with the pilots desire to roll, and instead produce both yaw and roll. Contributing factors are aileron parasite drag, induced drag between the wings and changes in the roll rate itself;
Are All Battery Chargers Alike?
Bob Fritz tests battery chargers and desulfation systems, and finds its easier to keep a battery in good shape than to raise it from the dead—and that a good charger is a better bet than a new battery.
