Warum fahren die großen Flugzeuge ihre Räder schon so früh aus?
Flugzeuge wie die AWACS oder Passagier Flugzeuge haben ihre Landeräder immer 40km vor dem eigentlichen Flughafen ausgefahren, was für einen sinn hat das? Man könnte doch beim landeanflug auf den flughafen erst die Räder ausfahren
At any rate, when I drove to Frankfurt Airport with the S-Bahn from Mainz, the suspension of Rüsselsheim (approximately 18 km from the airport) was still in motion with the machines in question.
Only over Raunheim (about 11 km away) were chassis and flaps outside. So they must have been driven somewhere in between.
Conversely from the direction of Offenbach, the suspension is also extended there. Offenbach is also about 18 km away.
And that’s what you always see when you watch the planes in the landing trip, not only on individual days.
“Immer 40 km” can be “not always”.
Since chassis and flaps provide noise, it is attempted to drive everything as late as possible. Security is going on, so there are, of course, deviations.
I don’t know! But 40 km are also not a distance for such a machine….and perhaps the air resistance increased through the chassis actually serves the reduction of speed….or the pilots want/must be sure that the chassis is extended before they go into the landing approach…also because they may have more important tasks as “running out and controlling whether it has been extended”.
40 km are 21 Nautian miles. A plane goes to the glide path at about 10-12 miles in front of the runway. Then, if you captured it, you’d also drive out the chassis. With larger machines the extension takes longer and is more complicated. Error sources can be detected and the suspension eliminates the need to activate the speedbrakes. If the pilot runs out the flaps and reduces thrust in the slide path that rarely really reduces the speed as the aircraft accelerates due to its sinking flight. In contrast, the chassis works by generating air resistance.
Once you were in a flight simulator, you also know how stressful the last 10 miles are. Adjust push and flaps, keep an eye on PAPI lights and runway, align on the centerline, observe traffic, keep radio contact, interpret GPWS … you make as much as possible earlier, for example spoiler poor, autobrakes poor, landing gear etc.
Hi.
On the one hand, they are actually simply used as an additional resistance, on the other hand it serves the Security (more time to identify any malfunctions) and Reduction of working load in the landing phase.
LG
The wheels serve as an additional brake due to the air resistance and reduce the lift. The suspension is therefore deliberately used as an additional landing flap.
The wheels on the aircraft are also used for decelerating the aircraft during landing, and in the event of an emergency (e.g. windshears) it is possible to use emergency landings (except on the water).
The suspension is extended approximately when the machine is on the
localizer is located. 👍🏻
LG
In order for the aircraft to build stability and to better slide it to the runway 😉
No one drives the suspension 40km before landing. Where does this fantasy come from?
We have 40km away a nato airbase, the awacs who fly over here usually have the suspension already extended