Why is it so tough to get to Venus and how long would it take us to get there? Going from point A to point B on Earth's surface is easy despite whatever obstacles there may be. You just need to follow a direction and sooner or later you'll get there. Calculating the travel duration becomes pretty straightforward by simply dividing the distance by the average speed. It might seem even easier in space where there are no obstacles, rivers to cross, or mountains to navigate. You just go straight, and there you go. Unfortunately, we're about to see that things aren't that simple.
Space is only seemingly an endless prairie where you can freely run in any direction at any speed. In space, there are invisible stakes that mark mandatory paths. We don't see them, but the void surrounding us is effectively curved by the masses of the planets themselves and especially by the predominant mass of the Sun. With one more complication: the planets move, so the pattern of navigable paths is constantly changing. Thus, over the years, it became clear that to direct a probe towards its target, it would be necessary to calculate launch windows, transfer orbits, deceleration maneuvers, and gravity compensation, all within the limits of a technology that currently only offers the possibility of using chemical propulsion engines.
In a couple of previous videos, we examined the challenges to overcome and the travel times to reach Mercury and Mars. In this one, we'll talk about Venus, which has been of great interest for scientific missions since the early days of solar system exploration. Getting there and in the shortest time possible has always been imperative for spacefaring nations and researchers. But what's the shortest possible time? In this case, too, as we've done for Mars and Mercury, it can be useful to examine the flight times of space missions that have taken place over the last 60 years. And in this video, made as usual for you by the Insane Curiosity Channel, we'll try to take a closer look at the matter.
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Credits: Ron Miller, Mark A. Garlick / MarkGarlick.com ,Elon Musk/SpaceX/ Flickr
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00:00 Introduction
02:15 Simplistic Travel Time Calculations
03:58 Why the Journey Takes So Long
05:21 Optimal Trajectories and Orbits
07:17 Fuel and Propulsion Considerations
11:01 Shortening the Journey
12:59 Using Gravitational Assists
13:59 Conclusion
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#insanecuriosity #venus #spacejourney
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