Science in pics

[Brett Buck]

Whoops -- I missed the drag figure.  Yes, you do have sufficient information in there.

  That was really the point - that unless you fly faster or slower, the level flight power applied to the airplane is the same. That was also the point of the previous thread on SSW where I gave up  because I got frustrated with one of the "engine experts" that didn't grasp the concept, didn't grasp the concept the efficiency was the relationship of the shaft power to the airframe power, and didn't grasp the concept that the static thrust and static HP means almost nothing when it comes to evaluating stunt engines.

   Almost everything "everybody knows" about engines and airplane propulsion is wrong or at least grotesquely misunderstood, but it's such a part of culture that it seems so simple that everyone is an expert. The same thing with many of the stunt folklore notions to the point that it's absolutely impossible to discuss them rationally without someone getting their nose bent out of shape.

      Brett