Mars    Helicopter

It's Cold on Mars
NASA's Ingenuity helicopter can be seen here with all four of its legs deployed before dropping from the belly of the Perseverance rover on March 30, 2021, the 39th Martian day, or sol, of the mission. Credits: NASA/JPL-Caltech. Download image ›

Within a few days, Ingenuity will be on the surface of Mars. Until now it has been connected to the Perseverance rover, which allowed Ingenuity to charge its battery as well as use a thermostat-controlled heater powered by the rover. This heater keeps the interior at about 45 degrees F through the bitter cold of the Martian night, where temperatures can drop to as low as -130F. That comfortably protects key components such as the battery and some of the sensitive electronics from harm at very cold temperatures.

Before Ingenuity drops the last few inches onto its airfield, Perseverance will charge up the little helicopter's battery to a 100 percent state-of-charge. That's a good thing, because Ingenuity has to run its own heater from its own battery after the drop. No more free power from the rover!

But there is another free source of energy on Mars: the Sun! The Sun's energy is weaker at Mars-a little over half of what we would find here on Earth on a bright, sunny day. But it's enough for Ingenuity's high-tech solar panel to charge the battery. Of course, this means that the rover will drive away from Ingenuity after the drop so that we uncover the solar panel. This will occur as soon as possible after the drop.

Ingenuity can't afford to keep the temperature of its interior at a "balmy" 45F -that takes too much precious energy from the battery. Instead, when it wakes up on the surface after being dropped, it sets its thermostat to about 5F or lower. Then it's off to survive the first night on its own!

The Ingenuity team will be anxiously waiting to hear from the helicopter the next day. Did it make it through the night? Is the solar panel working as expected? The team will check the temperatures and the battery recharge performance over the next couple of days. If it all looks good, then it's onto the next steps: unlocking the rotor blades, and testing out all the motors and sensors.



About This Blog

These blog updates are provided by the Mars Helicopter team. The Mars Helicopter is a technology demonstration to test the first powered flight on Mars.

Dates of planned test activities are subject to change due to a variety of factors related to the Martian environment, communication relays, helicopter and/or rover status.

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Contributors+

  • Bob Balaram
    Chief Engineer for the Mars Helicopter Project, NASA/JPL
  • Håvard Grip
    Ingenuity Mars Helicopter Chief Pilot, NASA/JPL
  • Jaakko Karras
    Ingenuity Mars Helicopter Deputy Operations Lead, NASA/JPL
  • Josh Ravich
    Ingenuity Mars Helicopter Mechanical Engineering Lead, NASA/JPL
  • MiMi Aung
    Ingenuity Mars Helicopter Project Manager, NASA/JPL
  • Teddy Tzanetos
    Ingenuity Team Lead, NASA/JPL

Where is the Mars Helicopter?

Image of a rover pin-point at Perseverance's location on Mars, Jezero Crater

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