False Capture
9th Jun 2004, 21:27
Whilst reading a book about tailwheel aircraft I came across the following comment: "Crosswind take-off, the maximum crosswind component for the DH82 is 7mph from the left and 12 mph from the right". Can someone please put me out of my misery by answering the following questions.
Firstly, I have never seen any official x-wind limit for the Tiger Moth - only recommendations in Flying Club Orders, Ops Manuals, etc. Has anybody seen a x-wind limit in an official publication such as RAF or RAAF Pilots Notes/ RAF Instructor Manual/ De Havilland Owners Manual?
Secondly, if there is a split limit (ie. 7mph left/12 mph right) then surely the author has got it the wrong way round. The propeller on a Tiger rotates in an anti-clockwise direction (when viewed from the cockpit) which results in the aircraft's nose yawing to the right on take-off. Assuming a x-wind will weather-cock the aircraft's nose into wind, a wind from the left will help to restore some of the engine induced yawing tendency. As a result a stronger x-wind from the left rather than the right would be expected. Shouldn't the limit be 12 mph from left and 7 mph from right?
It's been a long day and I've obviously missed something - I'll look at it tomorrow and it'll all make sense. Thanks.
Firstly, I have never seen any official x-wind limit for the Tiger Moth - only recommendations in Flying Club Orders, Ops Manuals, etc. Has anybody seen a x-wind limit in an official publication such as RAF or RAAF Pilots Notes/ RAF Instructor Manual/ De Havilland Owners Manual?
Secondly, if there is a split limit (ie. 7mph left/12 mph right) then surely the author has got it the wrong way round. The propeller on a Tiger rotates in an anti-clockwise direction (when viewed from the cockpit) which results in the aircraft's nose yawing to the right on take-off. Assuming a x-wind will weather-cock the aircraft's nose into wind, a wind from the left will help to restore some of the engine induced yawing tendency. As a result a stronger x-wind from the left rather than the right would be expected. Shouldn't the limit be 12 mph from left and 7 mph from right?
It's been a long day and I've obviously missed something - I'll look at it tomorrow and it'll all make sense. Thanks.