this post was submitted on 13 Jul 2024
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Six motorcyclists rode into Death Valley National Park on July 6. Only five came out alive. With temperatures reaching 128 degrees Fahrenheit in California, the cyclists faced extreme heat exposure that killed one and sent another to a local hospital, according to the National Park Service.

When there’s a medical emergency like this, helicopters are typically dispatched to get people to a hospital. However, the extreme heat made it impossible for the helicopters to fly.

The next day, an emergency helicopter pilot in Stanford, California had to cancel a flight because the tarmac near a patient was too hot for him to land. As reported by The Washington Post on Wednesday, the pilot said he’d never seen temperatures this bad in his 27-year career.

Extreme heat, as many across the U.S. are experiencing this summer, can cause computer and mechanical systems on board helicopters to overheat and malfunction. But it’s not just a mechanical issue as air pressure is also a factor. Air expands when it’s hot and contracts when it’s cold. As it gets hotter outside, air pressure plummets. The air literally gets thin which means that spinning helicopter blades have less air to cut through and it’s harder for them to achieve lift. That makes it dangerous, and sometimes impossible, to fly.

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[–] [email protected] 9 points 3 months ago (9 children)

It doesn't even sound like a fun idea!
But I hate the heat.

[–] [email protected] 22 points 3 months ago* (last edited 3 months ago) (8 children)

It's a terrible idea, having been a biker in socal. You'd think ventilated fabric, even a regular t-shirt with air moving on you from your forward motion would cool you..

It doesn't. You're actually adding heat (thermal energy) to your body faster than it can be removed by your sweat glands, the glands cannot output water fast enough to match the thermal energy being injected into you as the hot air passes over your body. You actually need to insulate yourself with a wind blocking jacket, at which point fuck that, stop riding, and wait a few hours.

It's a very odd sensation, but you understand it almost without explanation if you've tried it... So what were these guys thinking, ignoring their body's alarm bells?

[–] [email protected] -1 points 3 months ago (7 children)

Once the ambient temperature matches your body's temperature, it's game over for your physiological cooling system.

[–] [email protected] 2 points 3 months ago

That's not true, otherwise Phoenix would be unlivable. It's close, but not quite there yet.

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