In recent years, quadrotors have exploded in popularity. They’ve become cheap, durable, and can do some really impressive things, but are they the most efficient design? The University of Queensland ...
In recent years, quadrotors have exploded in popularity. They’ve become cheap, durable, and can do some really impressive things, but are they the most efficient design? The University of Queensland ...
In June 1939, the U.S. Navy placed a contract with the Steel Products Engineering Co. (SPECO) of Springfield, Ohio for one XB-4070-2 barrel engine, a concept also tried elsewhere, but never fully ...
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