PPRuNe Forums - View Single Post - maximum V1
Thread: maximum V1
View Single Post
Old 6th October 2010 | 16:40
  #9 (permalink)  
Mad (Flt) Scientist
20 Anniversary
 
Joined: Sep 2002
Posts: 2,188
Likes: 6
From: La Belle Province
Originally Posted by demomonkey
Vmcg <= V1 <= Vr <= Vmbe / Vmo?
No. Partially correct.

V1 must be higher than Vmcg (actually must be higher than V1mcg, but the simpler statement is true too).

V1 must be lower than Vr, true.

V1 must also be lower than Vmbe, true.

Not sure what Vmo is doing in there, but sure, Vr must be lower than Vmo, I'll grant you that, though any aircraft where that is a consideration scheduling Vr is a strange beast indeed.

But there's no required relationship between Vr and Vmbe. If V1 were set equal to Vmbe, then Vr could easily be above Vmbe.

So I'd rewrite your relationships as:

Vmcg <= V1 <= Vr [ <= Vmo ]
and
V1 <= Vmbe

but really the Vmo bit is a red herring

lazy typing alert : add a bunch of "or equal to" statements to the text above. mea culpa
Mad (Flt) Scientist is offline  
Reply