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Old 3rd January 2009 | 11:14
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sru
 
Joined: Aug 2007
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From: when I find out I'll tell you
Question Aussie climb gradients and obstacle height
Hi all perf / math people,

 1. Given the following, is it possible to calculate the height and distance to the limiting obstacle:-

 TODA 1960 (4.49%)……. (full length, climb gradient required to clear obstacles)

 STODA 1951 (3.33%)
 1934 (2.2%)
 1916 (1.6%)

 My thoughts are that all combinations of reduced runway length vs. climb gradient should all intersect at the same point (for the limiting obstacle)

 2. Is this valid?

 3. If it is valid can I work out this intersection point to answer # 1?

 I have (I think derived my own equation) but would like to validate it.

 Ideas welcome, PM me if you need further info.

Thanks to all that read,
SRU
Last edited by sru; 3rd January 2009 at 11:38.
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