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Cessna Skyhawk

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Thanks to  Cessna Skyhawk — Charly W. Karl for sharing…

Cessna Skyhawk

The Cessna Skyhawk is the ultimate training aircraft and the most popular single-engine aircraft ever built. With forgiving flight characteristics, great visibility, a sophisticated glass cockpit outfitted with G1000 avionics, slow landing speed and a forgiving stall – the Cessna Skyhawk is a flight training favorite ideally suited for student pilots.

Cessna Skyhawk, avionics
Each Skyhawk come standard with trusted flat-panel Garmin™ G1000™ avionics, featuring Safe Taxi and Flight Charts as well as electronic checklists and a SafeFlight AOA system.

The flight deck of the Skyhawk offers optional features such as ADS-B, traffic, synthetic vision, XM weather, and the sophisticated GFC 700 autopilot. These advanced avionics create the optimal environment for learning how to fly in the world’s most popular trainer.

Cessna Skyhawk//embedr.flickr.com/assets/client-code.js
Web: cessna.txtav

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Why Do Your Wings Have Dihedral? | Boldmethod

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Why Do Your Wings Have Dihedral? – Bothmethod

If you look closely at the wings on most aircraft, they’re tilted up slightly. Why would they ever do that? It’s not because you pulled too many Gs on your last flight. It’s because of a design feature called dihedral.
primary
First Off, What’s Dihedral?
Dihedral sounds like one of those words you cringed at in math class, but it’s actually pretty simple. Dihedral is the upward angle your aircraft’s wings. Here’s a great example of wing dihedral on a Boeing 777:

boeing-777-dihedral

Why Do You Need Dihedral?

It all comes down to stability. If you didn’t have dihedral, you’d spend more time keeping your wings level. Here’s why:

dihedral-stability
When you bank an airplane, the lift vector tilts in the same direction as the bank. And when that happens, your airplane starts slipping in the same direction, in this case, to the right.

The problem is, if you have a straight-wing aircraft, there’s no force that will bring the airplane back to wings-level flight without you intervening. And while that may be good for an aerobatic aircraft or fighter jet, it’s not something you want in your general aviation aircraft or airliner.
How Dihedral Fixes The Problem

When you add dihedral, you add lateral stability when your aircraft rolls left or right. Here’s how it works: let’s say you’re flying along and you accidentally bump your controls, rolling your plane to the right. When your wings have dihedral, two things happen:

1) First, your airplane starts slipping to the right. That means the relative wind is no longer approaching directly head-on to the aircraft, and instead is approaching slightly from the right. This means that there is a component of the relative wind that is acting inboard against the right wing.
dihedral-overhead
2) Second, because the relative wind has the inboard component, and because the wings are tilted up slightly, a portion of the the relative wind strikes the underside of the low wing, pushing it back up toward wings level. What’s really happening here is the low wing is flying at a higher AOA, and producing slightly more lift.
dihedral-slip-rear
The more dihedral your aircraft has, the more pronounced the effect becomes. But for most aircraft, they only have a few degrees of dihedral, which is just enough to return your wings to level during small disturbances, like turbulence, or bumping your flight controls in the cockpit.
It’s Not All Good News: Dihedral Comes At A Cost

Dihedral isn’t always good, and like almost every design factor, it comes with a cost. In this case, there are two costs: increased drag, and decreased roll rate….

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Source: Why Do Your Wings Have Dihedral? | Boldmethod

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