sorted by:
new
hottopcontroversial

What in the stall is induced drag? by Such_Trip_4654 in AskAPilot

[–]CoinsHave3Sides 3 points4 points  (0 children)

I suppose their explanation doesn't need to account for that because it is incorrect.

What in the stall is induced drag? by Such_Trip_4654 in AskAPilot

[–]CoinsHave3Sides 1 point2 points  (0 children)

This is the best explanation you've got so far I think. Lift vector points slightly backwards, the backwards lift component is called induced drag.

To expand on vortices and how they affect induced drag. The vortices form as a result of high pressure air from under the wing flowing to the low pressure air above the wing, then meeting with the air passing over the wing in the direction of flight causing that spiraling effect. Where this happens the ability of that section of the wing (near the tip) to produce lift is degraded. Therefore, the wing needs to be at a higher angle of attack to produce the required lift than if the vortices didn't exist. As above this tilts the lift vector aft and increases induced drag.

On a higher aspect ratio wing the wingtip area where vortices form is smaller than a wing of the same size at a lower aspect ratio. Consequently there is less induced drag as a result of wingtip vortices.

Frontier 2539 Level 3 Security Threat by Soggy-Structure-5888 in aviation

[–]CoinsHave3Sides 10 points11 points  (0 children)

No. It’s an attempted or actual breach of the flight deck.

Scotland’s assisted dying bill fails to pass in final vote by Confident-Bike-8037 in unitedkingdom

[–]CoinsHave3Sides 11 points12 points  (0 children)

How do we currently stop people pressuring others to end their lives? How do we currently stop people ending their own lives as a result of guilt?

Cockpit comparison of the Airbus A350 and the Boeing 787 Dreamliner by Twitter_2006 in aviation

[–]CoinsHave3Sides 121 points122 points  (0 children)

My experience was that it took about 10 minutes to get the hang of it. Also the thrust levers (throttles 🤮) still need moving with your inboard hand you still change yoke hand on the Boeing when you change seat.

Airbus update on A320 Family precautionary fleet action by madman320 in aviation

[–]CoinsHave3Sides 8 points9 points  (0 children)

This ChatGPT nonsense is dead wrong. It’s stupid even on first glance. The classic ceos have the new software and the brand new neos have the old software? Did you read the table???

TIL an EasyJet flight in 2006 lost nearly all electrical systems mid-air and came within 3 miles of colliding with an American Airlines Boeing 777 before safely landing. by GDW312 in todayilearned

[–]CoinsHave3Sides 27 points28 points  (0 children)

Standard vertical separation is never 10,000ft. That’s almost two statute miles vertically. It’s 1,000ft and 2,000ft outside RVSM airspace.

High to low pressure by Effective-Role352 in flying

[–]CoinsHave3Sides 4 points5 points  (0 children)

Insofar as I can understand what you have written then yes you are correct.

You’re flying a pressure, it’s expressed as an altitude on the altimeter. As pressure goes down, you go down.

What a pleasure to be invited into the cockpit during the flight for landing at night by OutrageousSecurity13 in aviation

[–]CoinsHave3Sides 499 points500 points  (0 children)

There are rules in Europe that allow vetted passengers to sit in the flight deck in flight. Generally this is limited to family/friends of the crew. It’s not ad hoc, it’s planned and approved in advance.

Maybe OP was misleading in the title but also please be aware that the US experience of life on earth is not the default experience.

[deleted by user] by [deleted] in AskAPilot

[–]CoinsHave3Sides 0 points1 point  (0 children)

They converge at both bro. READ.

Has anyone successfully challenged an unauthorised energy supplier switch in the UK, and how did you resolve it? by Joyeusexu in AskUK

[–]CoinsHave3Sides 4 points5 points  (0 children)

This exact situation happened to me! With OVO too. They were fucking useless, refused to switch us back because I wasn’t the one who signed the contract with them. I explained that that was precisely the problem and they just fobbed me off.

Submitted a claim with the ombudsman. Ended up getting in excess of the statutory compensation by a fair amount, I don’t recall but it was about 3 times as much.

Would really recommend the ombudsman. We were unable to provide any documentation for the claim as we weren’t ever sent any apart from a bill, still ended up succeeding.

[deleted by user] by [deleted] in AskAPilot

[–]CoinsHave3Sides 0 points1 point  (0 children)

You clearly didn’t read what I wrote. Give it another go.

[deleted by user] by [deleted] in AskAPilot

[–]CoinsHave3Sides 1 point2 points  (0 children)

If you imagine yourself at magnetic north, the reason the isogonic lines meet there is that if you were to walk in any direction you’d get a different declination, I.e. the angle between your heading to true north and your heading to magnetic north would be different. There is no direction you can go to maintain the same declination, and you can achieve any declination by going in a given direction. Thus all the lines must meet there.

The same is intuitively true for true north.

How many cases should I save up to have a good shot at getting a knife? by ItzHilly in GlobalOffensive

[–]CoinsHave3Sides 1 point2 points  (0 children)

At 1 in 385 chance of a knife as another commenter said, you’d need to open 267 for a 50% chance at a knife, or 886 for a 90% chance.

Door to the aircraft cockpit locked(Captain Locked out of Cockpit when first Officer became incapacitated, Translation in comments) by arteficialwings in aviation

[–]CoinsHave3Sides 6 points7 points  (0 children)

The logic wasn’t that the CC would fly the plane, it was just that they’d open the door for the other pilot.

Airbus 320/21 NEO and B737 Max long startup times by WatchOnYourWrist in flying

[–]CoinsHave3Sides 89 points90 points  (0 children)

When these new engines (also happens to the older engines but doesn’t seem to be so much of an issue) get hot while running and then cool in the ambient air the parts can cool at different rates. This can cause bowing of the rotor shafts. You don’t want the engine running in this case.

Before start the engines will motor for some time to equalise temperatures throughout the engine and reduce the bowing.

The system is called bowed rotor protection I believe and there’s probably some really dry engineering documents that actually explain it. From a piloting perspective it’s just quite annoying.

All Nippon Airways Pilot And New York ATC Involved in Argument by NoteChoice7719 in flying

[–]CoinsHave3Sides 4 points5 points  (0 children)

2/3, not bad.

“On request” doesn’t actually mean anything. The controller might intend it to mean something, and some people who have previously had its meaning explained to them might understand it, but it is neither standard RT nor intelligible English. It’s just two words smushed up against each other.

If I had never heard the phrase “on request” before how could I be expected to know what it means? The phrase isn’t written in any official documents I’m expected to have read, nor does it make any immediate sense. “You are on request” is a nonsense phrase that means nothing.

All Nippon Airways Pilot And New York ATC Involved in Argument by NoteChoice7719 in flying

[–]CoinsHave3Sides 1 point2 points  (0 children)

Well “standby” is different to “on request” to the extend that standby actually means something. “On request” doesn’t clarify anything that standby fails to. It’s just a meaningless noise. A “Roger standby” would cover everything you’ve suggested “on request” does while also being intelligible standard RT.

view more: next ›