Common private jet engines such as the Williams FJ44 has a bypass ratio of just 2.8:1. Installation requirements aside. From an engineering perspective is there much to gain in efficiency by going to a higher bypass ratio on such small engines?

  • 3
    $\begingroup$ I guess private jets doesn't fly that much to justify the increased cost with fuel savings, especially in a segment so far away from "economy". $\endgroup$ Commented Feb 25, 2020 at 23:16
  • 5
    $\begingroup$ Lower bypass ratios are more efficient above 45000 ft where most bizjets are designed to cruise. $\endgroup$
    – John K
    Commented Feb 26, 2020 at 0:34


You must log in to answer this question.

Browse other questions tagged .