jtr

22nd Sep 2003, 16:12

Hi, have a Thrust Req. graph for the -400 and am trying to interpret it. Here is the info...

31000-33000 ft

STD day

THR Req lb vs MACH

Curves represent typical drag curves but are numbered 1.9, 2.2 2, 2.5, 2.7, 2.9, 3.1.

Formula on the graph says

................6

W/delta-10 LB

--------------------

.........1.9

2.2 thru 3.1

Dots added to put everything in the right spot (space bar wont do it) That is 10 to the power of six I am trying to do.

delta is the lower case greek one. How do I get a sensible answer out of that all in relation to weight? Trying to relate Min Drag speeds and LRC speeds to what comes out of the FMC.

All help greatly appreciated.

31000-33000 ft

STD day

THR Req lb vs MACH

Curves represent typical drag curves but are numbered 1.9, 2.2 2, 2.5, 2.7, 2.9, 3.1.

Formula on the graph says

................6

W/delta-10 LB

--------------------

.........1.9

2.2 thru 3.1

Dots added to put everything in the right spot (space bar wont do it) That is 10 to the power of six I am trying to do.

delta is the lower case greek one. How do I get a sensible answer out of that all in relation to weight? Trying to relate Min Drag speeds and LRC speeds to what comes out of the FMC.

All help greatly appreciated.