Did anyone tell you to avoid flying in the yellow arc? In many aircraft, it is not an easy task.
What is Vno?
FAA VNO is determined in the pilot booklet for flying as “the maximum speed for normal or maximum structural limit Sailing speed. This is the speed that may be caused by the load factor that exceeds the maximum of permanent deformation of the plane’s structure. “The definition looks a little ugly, right? As you’ll read about”, the speed of structural wandering is confused “with VNE all the time, but this cannot be far from the truth.
When you look at the VG chart, you will notice a line that helps the maximum wandering speed. While faster and faster, any change in the angle of the attack will lead to a larger G on the plane. This may cause the upper or lower plane from the structural damage shown in the graph below.
VNO manufacturers publish a safe insulating area between normal air speed, and a weather speed that can cause structural failure during a high -speed flight. During slow speeds, Moderate disturbance It will lead to a relatively small G loading. With increased speed, the G forces associated with the turmoil have a much stronger effect on the loading restrictions. This is one of the reasons that you will feel uncomfortable, and you are flying to the fastest air speed. Your body suffers from more download G, just like the plane.
On your own Air speed indexVNO is represented by the point where the green arc is ended and the yellow arc begins. The VNO speed is spread to your plane in POH.
In some aircraft, the airline in the yellow arc is “normal”
In an article on Moonypilots.com, a test pilot states …
“The upper part of the green arc/the beginning of the yellow arc on the M20C is impossible 130 lymphs. Oh my God, in the C model, you are almost wandering in the yellow arc on the level of the level! This is great restrictions on the proportions if you want to adhere to Airpeed Airpeed.”
If you fly something like Cessna 172, it is difficult to reach VNO, and it is impossible for a level journey. According to the C172s Poh, 129kias is the maximum rapid curve speed. Poh guides the two pilots: “This speed only exceeds in smooth air, then with caution only.” If you have traveled to C172 ever, you know that to reach VNO, you have to fly a high descent rate, along with high energy preparation. Not only there are many cases where you will find yourself in the yellow bow.
But in aircraft such as Moony, Cirrus SR22 and other high -performance individuals, you have to issue a ruling on going down using the power of cruises, or low energy preparation. This, in part, is determined by the smoothness of the air. The ruling on this “softness” is not as easy as it seems, and FAA does not provide any definition of “smooth air”.
Sometimes small bumps do not worry. When you start noticing control problems or large air speed changes, it is always intelligent to slow VNO. The most smooth air is aircraft aircraft when it comes to flying at the rapid aerial speed. In addition, you and your passengers will feel more comfortable at slower speeds during turmoil.
What should you do?
Always go back to your POH aircraft around VNO speeds, definitions and procedures. Don’t be afraid to fly in the yellow arc, but always be careful about the weather conditions around you. If you find yourself flying very quickly, you can control speed By reducing energy or slowing your descent rate. Both these two options combined is a great way to make sure that you fly quickly.
VNO does not need to deal with VNE speed (never exceeds), because your plane is approved to travel within this range under the appropriate conditions. As long as you are careful, you will not harm the plane. However, frequent flights in the yellow arc in anything other than smooth air will impose repeated pressure on the plane’s structure. Over time, this tension can lead to structural failure. Simply, if the air is not smooth, then the vno slows down.
What do you think? How many times do you fly in the yellow bow?