| | ASK DJ Aerotech Question (Site not responding. Last check: 2007-11-05) |
 | | The aerodynamic interaction of a covered, slab-sided fuselage or a covered pylon with the underside of the wing can create an effect that acts like a degree or two of additional dihedral, but for a stick fuselage and.or an uncovered pylon this will not happen. |
 | | The interference drag between the wing and the fuselage top, the wing and the pylon, and the fuselage and the pylon, the extra structural weight of the pylon and its supporting structure, and the parasite drag and added whetted area of the pylon itself all extract their toll. |
 | | Besides all the usual forces and moments present in a conventional arrangement, the pylon introduces at least two additional bends in the load paths, and with them a number of additional torsional and bending problems. |
| www.djaerotech.com /dj_askjd/dj_questions/pylonbeny.html (1142 words) |