NASA火星无人机“机智号”第四次飞行Ingenuity Helicopter completed 4th flight on Mars for 133 meters distance
On April 30, 2021 NASA’s Ingenuity Helicopter successfully completed 4th flight on Mars for 133 meters distance. Perseverance Rover spotted Ingenuity’s fourth flight on Hazcam. Flight Four sets out to demonstrate the potential value of that aerial perspective. The flight test allowed Ingenuity climbing to an altitude of 16 feet (5 meters) and then heading south, flying over rocks, sand ripples, and small impact craters for 276 feet (84 meters). As it flies, the rotorcraft will use its downward-looking navigation camera to collect images of the surface every 4 feet (1.2 meters) from that point until it travels a total of 436 feet (133 meters) downrange. Then, Ingenuity went into a hover and took images with its color camera before heading back to Wright Brothers Field.