361–370 of 386 posts
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Who are "they"? Civilians who have to fly by plane because they have no other option?
The majority flying Aeroflot at this point are inherently "elite" or "elite-adjacent". Making their life less convenient is literally the point of sanctions.
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There are places in Russia proper which are only reachable by plane due to lack of roads.
Like some of the roads they dug up to prevent getting couped by Wagner?
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After the 2nd. one.
None of the crashed 737 MAX-8s were ever re-flown. This is a conversation about re-flying air frames that have been involved in fatalities. Air frames here means the planes, not the model. The 737 Max-8 is a cautionary tale about a lot of things, but re-flying crashed airframes is not one of the lessons.
For those wondering, this is what US/anti-Russia propaganda looks like.
Russian propaganda: “We must invade a sovereign nation to eliminate the Nazis and implement a program of de-Nazification through vigorous ethnic cleansing!” US propaganda: “Russian airlines are unreliable and are making some questionable maintenance decisions.”
IE: Russian airlines can't even afford/acquire new brakes -> sanctions are working and their economy is crumbling -> the war will soon be over and Putin will be lose power.
Both methods take a tiny kernel of truth and spin it to be much more meaningful than what it is, but allowing the reader to make the final connection is much more inception-like and thus much more effective.
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An aircraft operating nominally is designed and intended to be able to land safely relying on just the brakes. Thrust reversers are also used because they decelerate the aircraft quicker and with less wear on the brakes, aka thrust reversers are used out of convenience and benefits. Thrust reversers may be used solely in an emergency that renders the brakes inoperable, but such situations are so exceptional they aren…
> An aircraft that can't land safely with just brakes would not be certified to fly. Yes. That doesn't contradict what I wrote. The thrust reversers also greatly reduce the stress on the tires, another critical and expensive item. There's also the enormous heat generated, which stresses the rest of the landing gear and the bearings. One of the certification tests is the airliner is landed with flaps up, at max landin…
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Oh for sure, but I'm guessing it's rare for an operator with modern aircraft to aggressively defer maintenance to the extent it sounds like is happening over there. Toyota has plenty of data about what happens to a Camry if it goes a few years with no oil changes (because people) but does Boeing have similar data to draw from?
We just had a roughly three year period where planes meant to be running more or less constantly were consigned to desert parking lots due to lack of travel demand.
Planes don't stop with the reverse thrust, only slow down to 100-120km/h. If you use it a lower speed there's a real risk of lifting a piece of debris off the runway and sucking it into the engine intake. This is why we have to bother with pushback for jet aircrafts unlike the convenient powerback we have for props.
The pilot of the Boeing 727 (maybe 737) I was in used reverser-only pushback from a gate, 20-30 years ago. This was in the USA. Highly memorable. However, no doubt much easier to keep a gate area clean, as opposed to a whole runway.
Some of it is even captured on video https://youtu.be/zG_u_B5d7cQ
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I seriously doubt the thrust reversers significantly shorten the life of the engine for the few seconds they're on. All the reverser is is a couple of hydraulically operated clamshells that close over the exhaust stream forcing it to the side rather than back. Ironically, it doesn't actually "reverse" the thrust. The exhaust stream impinges on the clamshell, pushing the airplane backwards.
Ohhhh that makes so much sense than the halfbaked naive implementation in my head involving the turbine somehow reversing the direction of airflow entirely and sucking air from the back to the front.
Turboprop airplanes have variable pitch propellers, I don't know if they can change the pitch enough to get reverse thrust.
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> An aircraft that can't land safely with just brakes would not be certified to fly. Yes. That doesn't contradict what I wrote. The thrust reversers also greatly reduce the stress on the tires, another critical and expensive item. There's also the enormous heat generated, which stresses the rest of the landing gear and the bearings. One of the certification tests is the airliner is landed with flaps up, at max landin…
>The brakes are a backup system for the thrust reversers, not the other way around. Absolutely *NO!* Thrust reversers are always supplementary to the brakes, the brakes are always the primary means of bringing the aircraft to a stop on the ground. If the tires blow, the brakes burn out, and the landing gears are a goner in an emergency landing then so be it, that is all part of the design specifications. Why is it li…
The cert test that results in flames is a worst case scenario - in particular, with flaps retracted, the airplane lands at a much higher speed than normal.
And, of course, when you're taxiing around, you'll just use the brakes.
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> The USA does as well, except among poor people and gun victims. I suggest you look at the actual causes of death in the US: https://www.cdc.gov/nchs/products/databriefs/db456.htm#secti... Considering typical health outcomes in the US, obesity and the life choices people make, I don't think you can honestly say the US obsesses about preventing deaths. Of course, improved health care access and personal health wouldn…
>US car death rate is significantly higher than Europe or elsewhere, very preventable with more stringent driving tests and lower blood alcohol level allowances. if you think that's the key difference between driving in Europe versus the United States then i'm not sure what to tell you. Distances are longer, traffic is denser, speed limits (in general) are higher, and the ability to drive from one place to another is…