A naked skydive inspired a way to keep pilots oriented in flight

Post by ncmncm » Sat, Apr 09, 2022, 8:41 PM UTC

krisoft wrote: post #171

ncmncm wrote: post #102

Earlier quoted context omitted.

It could get regular situation updates from base, and rely on GPS and compass to relate local position and orientation to interesting points. Just knowing at all times, without need to look at anything, the directions to mission objective and back to base would be useful.

> Just knowing at all times, without need to look at anything, the directions to mission objective and back to base would be useful. You are not going to get direction from GPS sadly. You could have it from differential GPS but I can’t imagine a way how to do mount a long fixed baseline comfortably on a vest.

Post by hedora » Sun, Apr 10, 2022, 1:49 AM UTC

Zak wrote: post #142

hedora wrote: post #122

Earlier quoted context omitted.

I wonder why new planes are so complex. Computers make it technologically feasible to simplify things, but also to make them more complicated. Big organizations always inject as much complexity as possible into engineering projects.

Broadly speaking, because they have to be able to handle a huge range of conditions. A Cessna 152 (a single-engine, two-seat, low-performance aircraft popular for flight training) isn't very complex to operate. It can't fly at 30,000 feet, cross continents in a single flight, fly in icing conditions, land in zero visibility, safely take off or land in a crosswind that could be described as more than a stiff breeze, o…

Post by ncmncm » Sun, Apr 10, 2022, 4:28 AM UTC

LorenPechtel wrote: post #108

ncmncm wrote: post #46

Earlier quoted context omitted.

That was a good idea, but a very stupid execution. All you need is an ear bud that clicks as your head turns past each cardinal point. (The click can vary by which point it is.) You can implement this with 10 grams of microcontroller and a magnetic sensor. Add a couple of grams more for GPS, and you can have it click when your head points to where you parked your jeep or tent. To maintain battery life, you turn on th…

That's not going to save as much power as you think--civilian GPS has to download a message from the satellites that repeats on a 30 second interval before it can give a good answer.

Post by nix23 » Sun, Apr 10, 2022, 9:36 AM UTC

throwaway894345 wrote: post #194

nix23 wrote: post #180

Earlier quoted context omitted.

Sorry but not even north Korea would use bombers, however fighters are good for airspace policing...but shooting down bombers....that's 60's mindset.

No need to apologize. NK doesn’t use bombers because fighters and are prolific. Without those fighters bombers become more viable.

Post by camtarn » Sun, Apr 10, 2022, 1:13 PM UTC

ad404b8a372f2b9 wrote: post #185

camtarn wrote: post #174

Earlier quoted context omitted.

I think that linking skin sensations to proprioception is pretty dubious. Think about walking in a high gale. The air will be pressing your outer layers to your body in a way that adds extra 'weight', but there's not even the slightest sensation of phantom movement in your limbs. Maybe it's a very low-weighted input, but I very much doubt proprioception is 'heavily based' on it as you said earlier.

You don't get phantom movements when you get a deep tissue massage yet the muscles are very much involved. There is also literature on the role of the skin in proprioception in humans. That being said, heavily might be overstated, I wasn't trying to claim an authoritative view on the matter, only reporting what I felt while anesthesia was wearing off.