FN FAL
Freight Dawgs Rule
- Joined
- Dec 17, 2003
- Posts
- 8,573
What's the difference?shamrock said:Thanks for the clarification, but the method I described in my previous post is for windshear, not obstacle clearance.
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What's the difference?shamrock said:Thanks for the clarification, but the method I described in my previous post is for windshear, not obstacle clearance.
AA717driver said:I ain't the slickest guy when it comes to performance but I do know that if you don't pull back on the stick when the other guy says "Vr" or "rotate" and you blow a tire or suck in a bird or anything happens that would get the company to check the FDR, you're in a heap o' trouble.
With windshear present, you go rated thrust and maybe add to V2. You shure as he!! don't hold it on the runway longer. At least big planes work that way... TC
AA717driver said:I ain't the slickest guy when it comes to performance but I do know that if you don't pull back on the stick when the other guy says "Vr" or "rotate" and you blow a tire or suck in a bird or anything happens that would get the company to check the FDR, you're in a heap o' trouble.
With windshear present, you go rated thrust and maybe add to V2. You shure as he!! don't hold it on the runway longer. At least big planes work that way... TC
FN FAL said:What's the difference?
shamrock said:Tell that to the training department at ASA. Allowing the plane to accelerate (not "holding it on") to the higher V1 in windshear conditions is a trained procedure here. It's rarely used, but it is trained.
KeroseneSnorter said:I have never seen that procedure on anything of any size. Not saying that there is not one out there somewhere, but we are kind of comparing apples to oranges. After all the 74 hauls the full gross weight of 4+ RJ's just in fuel.
Kind of hard to compare an RJ to an 833k pound 747.
Most of the time at freight hauling weights we are using all the runway, no room left over to hold it on for more speed. Even a passenger hauling 74 is pretty light compared to a freighter.
shamrock said:Point taken. I really wasn't trying to compare an RJ to a 747, just pointing out that a technique ASA uses for windshear is similar to one that was referred to in an earlier post.
Singlecoil said:Where I work, the procedure for windshear is to bug for current weight, but rotate at the speed for the runway/climb limit weight for that runway under those conditions. That is for 737's and MD-80's.