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Old 3rd Sep 2007, 08:52
  #100 (permalink)  
saman
 
Join Date: Jul 2002
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All things being equal, more weight leads to more runway requiremnt. BUT all is very far from equal in differing aircraft designs.
Can I suggest that such items as wing loading (Mass/wing area), High lift device (slat and flap) design and efficiency, geometrically allowable rotation angles and thrust-to-weight ratios have a bit of an influence on performace and tail 'strikabilty' and that generalising by saying that 'bigger & heavier must be badder' is not very helpful.
A stretched fuselage on a smallish wing with a low rotation angle is very different to a smallish fuselage on a relatively big wing with a high available rotation angle - even if the required angle of attack differs due to high lift device design.
Every case is different and needs to be treated on its own merits - IMHO.
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