Originally Posted by RatherBeFlying
The more power, the more slipstream -- doesn't matter whether it's piston or turboprop.There are a number of WWII fighters that would roll uncontrollably if full power was applied at low speed.
Likely this a/c has engine and fin offset as it was designed around the powerplant, but the approach speed of 85 kt. is a hint that full power below that speed may be a bootfull.
http://www.legendaircraft.net
In my library is an interesting series of articles by George Collinge - "Is It Really Torque?" published in
Sport Aviation in early 1969. In these articles, he examines unbalanced engine torque, "P" factor, gyroscopic moment, etc. and concludes that the rotating slipstream from the prop, striking the fin at an angle, is the major culprit. However, the unbalanced torque of a Merlin prop shaft is several thousand pound-feet and not to be disregarded.
My dad when instructing always insisted the student become familiar with applying power quickly just above Vs. The airplane's response is often an eye-opener!
