Dettweiler42

Their actual reward: increased risk of prostate cancer

If you want to kick it up another notch, add a few drops of sesame oil to it, too.

It's simple. You block the adblocker blocker. There's usually an option for "enable adblocker blocker blocker" in your adblocker options.

But in this case, they're not. Plus, the crew are going to be the ones determining if their VOR/DME makes sense or not.

First, they have to align on the ground. You initialize them with your current known position (usually by GPS or your known airport/gate spot). Then, you wait for them to synchronize with the Earth's rotation. If you're far north, like in Alaska, this could take half an hour. If you're close to the equator, it could take 5 minutes. Once they're ready, from that point, any movement you make, it will know where you are and where you've been.

If you spin up a gyro and begin moving around, it will maintain it's starting position. You can use this deflection to calculate direction. If you know how fast you are going and for how long, you'll have your position.

Mechanical gyros drift. It's the nature of a world with friction. Newer IRUs use laser gyros, so the only real drift they have comes from extremely minute rounding errors.

If it's a smaller plane (such as a CRJ / ERJ) with only one IRU, it will not be able to determine if GPS is valid or not, so the drift correction gets spoiled.

Large commercial aircraft are using 3 IRUs, with newer aircraft using ADIRUs. If GPS does not agree with the three IRUs, the GPS data is thrown out. If the GPS is within tolerance, correction is applied. You could build up very small errors over a long distance, but you should still be pretty close to the airfield when you get there.

ADIRUs will throw out bad GPS data if it disagrees with multiple IRUs, hence why there's usually 3 on the aircraft. That being said, if the GPS is close enough to the three, then correction will still be applied.

If they're using the older IRUs, the drift is corrected via redundancy and not GPS. Usually pilots will report drift based on their final IRU coordinates compared against GPS. Even then, they should still be checking their course with VOR.

Yes. Most of commercial navigation systems rely on the IRUs as a primary source of position data, and they'll usually have 3 of them. VHF is used by the crew to confirm that the aircraft is on track by referencing VOR stations, though these are slowly being phased out due to GPS.

That being said, a single traditional IRU can have up to 2km of drift over a 2 hr flight (at which point it's removed from service and replaced). When used in combination with two other IRUs, the error is dramatically reduced. Traditional IRUs are gyroscopically mechanical in nature and do not talk to GPS.

Now, that being said, the new standard is called an ADIRU (ADvanced IRU), which ties in with GPS and features laser gyros. They're extremely accurate and have essentially zero drift, plus multiple redundant components within each unit.

That just means you can't use autoland in low visibility conditions. Modern IRUs (inertial reference unit) are highly accurate laser gyros that can use GPS for correction, but will throw out the data if it doesn't make sense. Navigation won't be affected much, and autoland (if used) will still rely on VHF guidance.

Water you talking about. We had to bail you out last week after you kept mixing up sailboats with yachts!

I see people talking about upvoting Technology Connections, I upvote.

His dishwasher video changed my life.

That exact model was $599 in October. I would know, because I bought one.

It's actually a really great smoker, but the app is terrible.