It's quite small, standing about half a meter high and with a mass of just 1.8 kilograms (so it weighs about 1.5 pounds in the lower gravity of Mars). The fuselage is a rectangular box about the size of two hefty hardcover books stacked on top of each other (20 x 14 x 16 centimeters) and it contains the avionics, the electronic systems that control the craft.
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Schematic of the Mars drone copter Ingenuity. Credit: NASA/JPL-Caltech
The lift is provided by a pair of counter-rotating carbon fiber blades (one spins clockwise, the other counterclockwise) stacked on top of each other. They span about 1.2 meters and will rotate at an amazing 2,400 RPM, which on Mars means the tips will be moving at 0.7 times the local speed of sound! The atmosphere of Mars is around 0.6% the pressure of Earth's at sea level, and that thin air means the blades have to work much harder to get Ingenuity airborne.