Wind-tunnel investigation of the aerodynamic balancing of upper-surface ailerons and split flaps

Wenzinger, Carl J
naca-report-549
1937

This report presents the results of wind tunnel tests to determine the effectiveness of various methods of reducing the high control forces of unbalanced upper-surface ailerons and of unbalanced split flaps.

An Adobe Acrobat (PDF) file of the entire report:
http://naca.central.cranfield.ac.uk/reports/1937/naca-report-549.pdf