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I keep asking myself the question. How much energy is needed to lift the helicopter? And how is this compared to earth? I know density is 0.1% on mars compared
by holoduke 6y ago
I keep asking myself the question. How much energy is needed to lift the helicopter? And how is this compared to earth? I know density is 0.1% on mars compared to earth. But air resistance on the blades is also lower on mars. It Requires faster spinning and bigger blades. Curious to know what the energy use is there.
- zabzonk 6y ago> I know density is 0.1% on mars compared to earth Actually, about 1%.
- deleted 6y ago[deleted]
- walrus01 6y agoAlso the helicopter weighs less, when they tested it in a big vacuum chamber they had a tethered line pulling it upwards to compensate for gravity.
- flohofwoe 6y agoI don't have a concrete answer, but the X-Plane flight simulator also simulates the Mars environment (see [1]) and aircraft aerodynamics are also properly simulated, so it should be possible to build a "physically correct" Mars helicopter and find out. (and of course somebody already seems to have done it [2]). [1] https://www.x-plane.com/adventures/mars.html https://www.x-plane.com/adventures/mars.html [2] https://forums.x-plane.org/index.php?/files/file/66264-mars-helicopter-ingenuity/ https://forums.x-plane.org/index.php?/files/file/66264-mars-...
- mabbo 6y ago1%, but also there's far less gravity too.
- walrus01 6y agoI believe they have mentioned in previous interviews that it has a 6S 18650 lithium ion battery pack (Sony cells), and that instantaneous hover wattage is expected to be around 220W. Since the batteries are also used to keep it warm a large portion of total Wh capacity are reserved for heating, each flight can only be brief before sitting and charging from the pv cells for a day or two.
- zokier 6y agoIt's designed to consume about 10Wh for 90s flight. I imagine the actual numbers are one thing that the team will be very interested to look at.