JetSyndrome
18th Aug 2013, 09:20
Gentlemen!
When I drove around in the B737, I could use the Boeing FPPM to find info on aircraft performance, and CFM would invite pilots to their courses on engine handling. On the Q400, Bombardier has, apparently, decided that customers must do their own flight testing, and that operating data should be a well kept secret. Likewise, the engine manufacturer refuses to provide information on, say, what is appr. zero-thrust torque during descend, what can be gained by using the assumed temperature method (effect on engine wear, fuel and maintenance savings etc.) - i.e. all of the things that are important to the operator! :ugh: Beats me...
I am primarily interested in graphs; drag polar, power- and drag curves etc. - anything I can use to show that "the step" does not exist, and that the last few per cent in torque/Nh (cruise pwr) will mostly increase fuel flow - not TAS...
Is flight test data available from any source, or is it considered an industrial/commercial secret? It sounds kinda odd that important information is withheld from customers :confused:
When I drove around in the B737, I could use the Boeing FPPM to find info on aircraft performance, and CFM would invite pilots to their courses on engine handling. On the Q400, Bombardier has, apparently, decided that customers must do their own flight testing, and that operating data should be a well kept secret. Likewise, the engine manufacturer refuses to provide information on, say, what is appr. zero-thrust torque during descend, what can be gained by using the assumed temperature method (effect on engine wear, fuel and maintenance savings etc.) - i.e. all of the things that are important to the operator! :ugh: Beats me...
I am primarily interested in graphs; drag polar, power- and drag curves etc. - anything I can use to show that "the step" does not exist, and that the last few per cent in torque/Nh (cruise pwr) will mostly increase fuel flow - not TAS...
Is flight test data available from any source, or is it considered an industrial/commercial secret? It sounds kinda odd that important information is withheld from customers :confused: