Brodhead Pietenpol Association

Original Posted By: steve(at)byu.edu
Attention all aerodynamicists: Could someone out there help me understandwhy adding engine thrust offset is standard practice as opposed to makingtrim adjustments with the control surfaces or trim tabs. I'm looking for ageneral answer and any special considerations applicable to the Piet.Thanks.Mark BoyntonPhoenix, ArizonaP.S. Still looking for builders/owners in the Phoenix area.________________________________________________________________________________

Original Posted By: Michael Brusilow
The short and hopefully most easily understood answer is "Drag Reduction"Thrust angle, incidence, dihederal, are all means of design and riggingmeant to reduce drag on the airframe so the controls dont have to be trimmedconstantly. These fixed settings are set for optimum drag reduction in thecruise configuration.Steve E.-----Original Message-----mboynton(at)mailexcite.comSent: Thursday, November 05, 1998 12:29 PMSubject: Pietenpol-List: Engine thrust offsetAttention all aerodynamicists: Could someone out there help me understandwhy adding engine thrust offset is standard practice as opposed to makingtrim adjustments with the control surfaces or trim tabs. I'm looking for ageneral answer and any special considerations applicable to the Piet.Thanks.Mark BoyntonPhoenix, ArizonaP.S. Still looking for builders/owners in the Phoenix area.________________________________________________________________________________