Are Airlocks Actually Deadly?

TL;DR

Opening an airlock in space does not automatically result in being blown out due to drag forces, but survival depends on positioning, minimizing cross-sectional area, exhaling, and protecting eyes and ears.

Transcript

behind me the void the great empty the expanse the place with the black holes and gamma rays and stuff space space is an amazing place filled with innumerable cosmic mysteries and wonders but it's also a place that you'd never want to experience or explore unprotected i think that's why the idea of being flung out of an airlock like this one is so ... Read More

Key Insights

• 😘 The trope of being blown out of an airlock in science fiction is greatly exaggerated.
• 😵 Drag forces exerted by air depend on variables like density, velocity, shape, and cross-sectional area.
• 😚 Positioning close to the interior door and minimizing cross-sectional area can increase the chances of surviving.
• 😍 Exhaling and protecting eyes and ears are crucial to prevent injuries during explosive decompression.
• 🤗 Opening an airlock does not automatically lead to being flung out into space, but survival depends on initial conditions.
• 🙈 Pressurizing airlocks at higher-than-normal atmospheres can increase the force exerted on a person during evacuation, as seen in some science fiction stories.
• 😘 The myth of being blown out of an airlock highlights the importance of considering scientific principles and variables in science fiction storytelling.

Questions & Answers

Q: What provides the force on a person when they are sucked out of an airlock?

The force comes from the air inside the airlock, known as the drag force. This force depends on variables like air density, velocity, shape of the object, and its cross-sectional area.

Q: Can the speed of air reaching the speed of sound cause a person to be flung out into space?

While the speed of air can reach the speed of sound when an airlock is opened to space, the drag force alone is not sufficient to fling someone out. Other factors like positioning and cross-sectional area play a significant role.

Q: Is surviving being blown out of an airlock possible?

Surviving being blown out of an airlock depends on various factors. Being positioned close to the interior door, minimizing cross-sectional area, exhaling to prevent lung damage, and protecting eyes and ears can increase the chances of survival.

Q: Are there situations where being blown out of an airlock can be deadly?

Yes, situations where a person is positioned at the back of the chamber, near the space, can be deadly. The force exerted by a full airlock's worth of air at high speed can cause injury or fling a person into space.

Summary & Key Takeaways

• Opening an airlock in space does not necessarily lead to explosive decompression that flings a person out due to drag forces.

• The force exerted on a person during an airlock evacuation depends on variables such as chamber size, pressure, and positioning.

• Being positioned close to the airlock door, minimizing cross-sectional area, exhaling, and protecting eyes and ears can increase the chances of surviving in space.