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Thread: Chandrayaan-2 is on its way to the moon

  1. #1
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    Default Chandrayaan-2 is on its way to the moon

    left Earth’s gravity well today.

    https://www.space.com/india-chandray...oon-orbit.html

    India's Chandrayaan-2 mission has marked another milestone in its journey to the moon, leaving Earth's orbit and heading toward lunar orbit with an engine burn.

    The burn, called a translunar injection, occurred on Aug. 13 (2:21 a.m. local time Aug. 14 at mission control in India) and lasted for 1,203 seconds, according to a statement from the Indian Space Research Organisation, which oversees the mission.

  2. #2
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    Default Re: Chandrayaan-2 is on its way to the moon

    Ahhh... relief!

    A thread that ain't about guns or US politicians - thanks, Lee!

    Remind me, please: what is the mission of Chandrayaan-2 when it reaches the moon?
    Hope for the best, but plan for the worst.

  3. #3
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    Default Re: Chandrayaan-2 is on its way to the moon

    Wow. 1,203 seconds seems like a really long TLI burn. I always like the part about the equigravisphere point, the point at which the moon's gravity takes over from earth's gravity and the vessel goes from deceleration to acceleration.

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    Default Re: Chandrayaan-2 is on its way to the moon

    Quote Originally Posted by mmd View Post
    Ahhh... relief!

    A thread that ain't about guns or US politicians - thanks, Lee!

    Remind me, please: what is the mission of Chandrayaan-2 when it reaches the moon?
    Land on southernmost part of moon, rover about.

    https://en.m.wikipedia.org/wiki/Chandrayaan-2

    The primary objectives of Chandrayaan-2 are to demonstrate the ability to soft-land on the lunar surface and operate a robotic rover on the surface. Scientific goals include studies of lunar topography, mineralogy, elemental abundance, the lunar exosphere, and signatures of hydroxyl and water ice.[52] The orbiter will map the lunar surface and help to prepare 3D maps of it. The onboard radar will also map the surface while studying the water ice in the south polar region and thickness of the lunar regolith on the surface.[53]

  5. #5
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    Default Re: Chandrayaan-2 is on its way to the moon

    Thanks, Lee. I am not the space junkie that I once was, but I still like to follow along.
    Hope for the best, but plan for the worst.

  6. #6
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    Default Re: Chandrayaan-2 is on its way to the moon

    The apollo TLI burn lasted 5 minutes 46 seconds.

    https://www.quora.com/How-long-did-A...-TLI-burn-last

    It has to generate quite a lot of delta V (to the tune of 3km/sec).

    Other spacecraft have used ion thrusters to perform low thrust but long duration TLI burns.

    https://en.wikipedia.org/wiki/Trans-lunar_injection


    It's fascinating stuff. Thanks for posting.
    Will

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