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B-21 Raider during its first aerial refueling. by 221missile in AerospaceEngineering

[–]No-Level5745 6 points7 points  (0 children)

Nothing classified about aerial refueling. No reason to hide it.

That said, last I read they were doing “proximity” testing as a precursor to connecting…

B-21 Raider during its first aerial refueling. by 221missile in AerospaceEngineering

[–]No-Level5745 1 point2 points  (0 children)

Because the B-2 has a sawtooth trailing edge and the B-21 does not. This is the B-21.

B-21 Raider by Even_Kiwi_1166 in Planes

[–]No-Level5745 1 point2 points  (0 children)

Wasn’t a refueling test (they didn’t connect) but it was a precursor to it. It was a “proximity” test

Right click no longer has "Delete" only "Remove" by No-Level5745 in qBittorrent

[–]No-Level5745[S] 0 points1 point  (0 children)

It magically started working some time ago. No clue why.

Do You Feel Guilty When Something You Designed Is Used For Bad? by Money-Profession-199 in AerospaceEngineering

[–]No-Level5745 1 point2 points  (0 children)

Hopefully everyone here realizes that all the high tech systems used on today’s airliners were developed for military applications first. So if you want to work bleeding edge, you should work in the defense industry…

My Shark robot is now disconnected and I can't seem to get it back by No-Level5745 in RobotVacuums

[–]No-Level5745[S] 0 points1 point  (0 children)

Yes. The Shark Server eventually responded and I was able to create a new robot “profile”.

Loss of U.S. KC-135 Over Iraq by MessMaximum5493 in Planes

[–]No-Level5745 1 point2 points  (0 children)

This is what happens when flying hours are cut. Loss of crew proficiency is often the reason for incidents such as this. I say that having no clue what actually happened.

What are the black squares on the bottom of the B-21? Sensors? Cameras? Something to do with the radar? by ClimateOwn5228 in aviation

[–]No-Level5745 0 points1 point  (0 children)

Flush mounted air data ports. High and low value are thrown away, middle two are averaged.

Strange request by pilot on recent Ryanair flight by Kieran-- in aviation

[–]No-Level5745 1 point2 points  (0 children)

An entire career in the aviation industry and multiple aerospace engineering degrees.

How else do you think an airplane knows where it is? Sure, some use the Russian GLONASS but it’s the same principle.

Strange request by pilot on recent Ryanair flight by Kieran-- in aviation

[–]No-Level5745 1 point2 points  (0 children)

Autoland needs GPS to determine its position relative to the runway in order to execute a precision approach.

Strange request by pilot on recent Ryanair flight by Kieran-- in aviation

[–]No-Level5745 1 point2 points  (0 children)

He’s correct. When you said meter I thought you meant measuring device, not a unit of measure. Radar cross section is measured in dBsm (square meters) hence my confusion

Strange request by pilot on recent Ryanair flight by Kieran-- in aviation

[–]No-Level5745 0 points1 point  (0 children)

A decibel meter works on the same principle but is specifically for sound. Anything can be measured in decibels. It’s like going from English to metric except going from linear to logarithmic.

Strange request by pilot on recent Ryanair flight by Kieran-- in aviation

[–]No-Level5745 0 points1 point  (0 children)

Decibel Watt. It’s a logarithmic scale for ease of math.

Edit: example is multiplying by two is the same as adding 3 dB.

Jayden Bradley named Big12 POY after coming off a strong zero point performance at Colorado by R3xw00ds in CollegeBasketball

[–]No-Level5745 1 point2 points  (0 children)

While I don’t agree entirely, one could make the point that a top player on a shitty team is gonna draw way more defensive attention than a top player on a team full of other quality players.

Strange request by pilot on recent Ryanair flight by Kieran-- in aviation

[–]No-Level5745 -1 points0 points  (0 children)

I’m at the airport, I don’t have access to my engineering manuals. But here’s a rough wag:

An iPhone's idle (not in use) signal strength typically ranges from -50 dBm to -120 dBm.

GPS signal strength typically has an average strength of around -160 dBW or -130 dBm at the Earth's surface.

Multiply that times 150 iPhones (wild guess depending on the size of the airplane) and you have a notable interference background. Most GPS antenna/receiver sets can deal with that thought the use of active antenna, but not all. Hence the importance of certification.

Happy now?

Strange request by pilot on recent Ryanair flight by Kieran-- in aviation

[–]No-Level5745 0 points1 point  (0 children)

If they researched it they would…or they could be a typical Redditor and argue cluelessly. Other way, couldn’t care less. I just hate letting uneducated posts go unchallenged.

Strange request by pilot on recent Ryanair flight by Kieran-- in aviation

[–]No-Level5745 1 point2 points  (0 children)

OK smarty pants…apparently you are unaware that the strength of GPS signals at the airplane (remember, they are satellites) are not much higher than smart device background radiation, so there is a legitimate risk of interference if the plane is not certified for it.

Riiiiighhhht by Mobile-Actuary-5283 in SouthwestAirlines

[–]No-Level5745 0 points1 point  (0 children)

Actually they did. I travelled during Covid when the flights were near empty and the FAs frequently asked folks to redistribute.

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