By Bjorn Fehrm
April 25, 2016, ©. Leeham Co: We will now finish our series where we look into how big an undertaking a CS300 stretch to a 150 seater would be for Bombardier.
The C Series existing models, the CS100 and CS300, were designed with the CS300 as the main family member. That makes a stretch to a CS500 a pretty straight-forward job from a wing perspective, only minor adjustments are needed.
The problem area for the stretch is the fuselage. The C Series is a five abreast aircraft and at 150 seats the aircraft will have more than 30 seat rows. The resulting long fuselage limits the available rotation angle at takeoff.
Having discussed the different actions that can be taken to handle this problem in Part 2, we will now check the implications for the takeoff field length with our performance model. The model will also show if the engine takeoff thrust needs to be increased.
Finally, we will use the model to estimate the fuel consumption and the range of a CS500 derivative.