2020 is known as the 12 months of Mars as total there are 3 missions poised to launch towards the crimson planet, together with NASA’s Perseverance, the United Arab Emirates’ first-ever interplanetary Hope Mars mission, and China’s first Mars exploration mission-Tianwen 1.
However, have you ever thought about why the launch windows for all of the three missions have been set from mid-July to mid-August? Why cannot they launch their spacecraft in different months?
Scientist says in a statement, Timing is every part, particularly whenever you wish to send a spacecraft. Also, they said they should take essentially the most fuel-efficient route.
Mars opposition misconception
Zhang Rongqiao said in a statement “There are so many misleading reports related about the Mars opposition and Mars launch window,” chief architect of China’s Mars exploration program.
Some space watchers assume that it is higher to launch a probe throughout what’s known as “Mars opposition,” The specific day when the sun is alined together with the Earth in a middle. The following Mars opposition is on October 14, 2020. This phenomenon occurs every 26 months, giving the lesser distance between Mars and Earth. But this can be a misunderstanding.
In accordance with Zhang, with a set revolution period for each Earth and Mars, it is good to launch the probe of about two months forward of its opposition, as we all know the Earth moves a lot quicker than Mars. In different phrases, it will be not a good decision to launch the Mars probe throughout Mars opposition as a result of, based mostly on the revolution velocity of Mars and Earth, as well as to the velocity of spacecraft, there’ll by no means be an overlap of the spacecraft and Mars.
The launch window was chosen based mostly on probably the most fuel-efficient route
According to the Scientists, the optimum launch window is from July mid to August mid this 12 months, following essentially the most fuel-efficient orbit. Throughout this time, the Earth and Mars transfer in a comparatively quick distance, however not the closest distance.
Based mostly on space know-how, the probe will comply with an elliptical Earth-Mars switch orbit known as a Hohmann switch orbit. That is when after flying for around seven months, the probe will finally be captured by the gravity of Mars and transfer into the Red Planet’s orbit.