OverRun
23rd Feb 2006, 18:23
I'm looking at a runway upgrade in Mozambique. One of the design aircraft is the Embraer 135. All I've got is the standard takeoff lengths as being 1,760m for ISA, SL at MTOW; and 1,330m for ISA, SL, and TOW for a 400nm sector. Being Mozambique, it's warmer than that. Can anyone advise me of the takeoff lengths for the same configurations but at ISA+15 degC?
OverRun
1st Mar 2006, 02:47
For the record (and thanks for the PM). The question above was about takeoff lengths at ISA+15 degC?
The answer from EMB airport planning manual is:
1,860m for ISA+15 at sea level SL at MTOW (20,000kgs; no t/r);
1,390m for ISA+15, SL, and TOW for a 400nm sector (16800kgs TOW, no t/r).
So the +15 degC adds 60-100m, for this aircraft and these assumptions.
Of interest - the ICAO method for estimating runway length for non-standard conditions (aerodrome design manual; part 1 runways; 1984; 2nd ed) proved to be (of necessity) conservative, and would have given 2024m for ISA+15 at sea level SL at MTOW (20,000kgs; no t/r).