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Questions tagged [launch-window]

Questions regarding the limited period of time where a specific mission plan can be used.

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Is “launch-on-minute” or other discrete launch time protocols currently the norm for wide launch windows?

This excellent answer to a question about collision avoidance practices for launches begins with: While the length of a launch window varies, launches within the window typically occur at discrete ...
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How does the Parker Solar Probe have such a wide launch window?

The Parker Solar Probe is set to launch on August 11th 2018. It will perform 7 orbit-lowering gravity assists around Venus for ~6 years before reaching its final operational orbit. It has been well ...
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What is the rarest launch window?

What situation would make a launch window rare? What is the rarest known launch window?
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Why was TESS' launch window open for only 40 seconds per day?

The BBC news podcast Science in Action episode New Planet Hunting Mission covers the upcoming TESS mission between 01:00 and 07:15 with Sara Seager, TESS deputy ...
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What's the reasonable “window” in days for a Mars-Earth Hohmann transfer?

As any popular science reader knows, when traveling between Earth and Mars, there's a Hohmann transfer opportunity about every two years (I believe it's every 26 months, specifically). What I've ...
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What factors determine how long a window of opportunity opens for an interplanetary hohmann transfer?

I know that one can determine the approximate wait time for a window of opportunity to open up for an interplanetary transfer based on the relative positions and velocities of the two planets in ...
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When are there launch windows to Neptune via Jupiter?

I suppose there's a launch window to Neptune by using Jupiter as often as there are Jupiter/Neptune conjunctions, every 13½ years. But which years are Jupiter and Neptune best aligned for gravity ...
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1answer
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Why would there be a launch window for a Geosynchronous orbit? [duplicate]

The question is pretty much stated in the title. Is there anything other than "human caused" reasons for this (such as clearing airspaces, etc.)? I'm only looking for possible natural reasons (other ...
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Do geosynchronous satellite launches require a tight launch window?

I thought only launches to rendezvous (resupply, repair, space station expansion etc) and direct launches into interplanetary trajectory require precisely timed launch window. Then I read: Geosync ...