Eli5 how they did the practice runs on Top Gun Maverick

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Hopefully not a spoiler – when they are “practicing” that specific terrain for the mission they are practicing in the US. Does their monitor simulate the terrain on their screen? How are they practicing the steep climb into and out of the target space without actually being at that topology? I assume it’s not just movie hand-waving since they had navy consultants for the movie – so how do you practice flying a specific course without being actually on that course physically?

In: 2

Nav markers based on GPS probably. For example. Go to this point, then this point, then this point. At this point climb to x feet then decent to x feet by this point etc

Most likely a GPS and navigational course than can be programmed and plotted in pre-flight. If the aircraft leaves said course it could possibly be programmed to alert the pilot so that the pilots are aware when the mission has failed. But also the pilots would have been extensively briefed and trained on the mission and terrain just like real-life pilots. Most days are spent briefing, checking, lectures and debriefing. Only about 2 up to 3 hours are actually spent flying, less depending on the sortie. Pilots spend much much more time on the ground studying than most people imagine.

In simple terms, the flight GPS system is fed the same 3d visualisation that you see on screen in the movie. So the GPS and other devices essentially put the plane in the 3d space i.e. The valley. Now the data has the exact length breadth and height of the valley so as soon as the plane’s coordinate bypass that an alarm is triggered.

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Hopefully not a spoiler – when they are “practicing” that specific terrain for the mission they are practicing in the US. Does their monitor simulate the terrain on their screen? How are they practicing the steep climb into and out of the target space without actually being at that topology? I assume it’s not just movie hand-waving since they had navy consultants for the movie – so how do you practice flying a specific course without being actually on that course physically?

In: 2

Nav markers based on GPS probably. For example. Go to this point, then this point, then this point. At this point climb to x feet then decent to x feet by this point etc

Most likely a GPS and navigational course than can be programmed and plotted in pre-flight. If the aircraft leaves said course it could possibly be programmed to alert the pilot so that the pilots are aware when the mission has failed. But also the pilots would have been extensively briefed and trained on the mission and terrain just like real-life pilots. Most days are spent briefing, checking, lectures and debriefing. Only about 2 up to 3 hours are actually spent flying, less depending on the sortie. Pilots spend much much more time on the ground studying than most people imagine.

In simple terms, the flight GPS system is fed the same 3d visualisation that you see on screen in the movie. So the GPS and other devices essentially put the plane in the 3d space i.e. The valley. Now the data has the exact length breadth and height of the valley so as soon as the plane’s coordinate bypass that an alarm is triggered.