What is 1.3 times the stall speed in landing configuration?
1.3 times stall speed (VSO) is the target speed when crossing the runway threshold at 50 feet in landing configuration. Maintaining this speed, based on aircraft weight, helps ensure the calculated landing performance is achieved.
Okay, so think of it like this… you’re coming in for a landing, right? You’re low, maybe 50 feet above the runway, and you’re aiming for a speed that’s 1.3 times your stall speed. Why 1.3? Well, it’s kinda like a safety buffer. You definitely don’t want to stall when you’re that close to the ground! Bad things happen. I remember hearing a story once about a pilot who misjudged this… thankfully they were okay, but it was a close call! Gave everyone a good scare.
So, that 1.3 VSO (VSO meaning stall speed in landing configuration, by the way – lots of jargon in aviation!) gives you a little wiggle room. It’s calculated based on the plane’s weight and all that technical stuff, so it ensures – in theory at least – that you’ll touch down safely and within the expected landing distance. Because, let’s be honest, no one wants to overshoot the runway! Where would you even go? Off into the field? Not ideal.
Anyway, maintaining that specific speed at 50 feet is key to a smooth landing. It’s all about having that extra margin of safety, you know? Makes a world of difference. Like, imagine driving a car really slowly, almost stalling… you’d be much more vulnerable, right? Same principle applies here, just with, you know, slightly higher stakes. Much higher, actually.
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