Flight day 19  

Posted by y. 源

Today sortie was GH3 and it was actually a Solo Check for me to go training area! Haha..And of course, I cleared the check, baby! Haha. The sortie was not much different from the previous one. Steep Turn left and right, then went back to aerodrome for PFL. But hey, today's weather was crazy. At one time, the wind was crosswind 10knots. The next minute, it was tailwind plus crosswind 14knots! And the bad weather condition went on until late evening and I had to cancel my sortie again!!!!!

For some of you who wanna know why tailwind is unsuitable for landing/take-off, I will elaborate in a simpler way. Tailwind is the wind coming from behind the aircraft while crosswind is wind coming from sideways. So imagine now you are flying at 75 knots (indicated air speed) for approach to land and suddenly there is a 10knots tailwind. 75+10=85knots. Which means your ground speed is 85knots the moment you touch down. Please take note that airspeed (based on dynamic pressure in the air) and ground speed (based on distance travelled on ground per unit time)are two different speeds. So instead of 75 knots during touchdown, you have 85 knots, and this equals to longer landing distance to stop the aircraft, agree? What if there is a brake failure at that point of time with tailwind? Crash straight to the end of runway? NO NO. There is of course a 'cure' for the emergency provided that the pilot can handle it. Haha.

I will explain about effects of crosswind next time. Plus with how to land in crosswind, if I have the time. Haha. Gotta go for dinner now.

This entry was posted on Wednesday, February 27, 2008 and is filed under . You can leave a response and follow any responses to this entry through the Subscribe to: Post Comments (Atom) .

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