Mechanical aids to flight

Warner, Edward P (Massachusetts Inst. of Tech)
naca-tm-98
May 1922


This report examines the great utility and safety of using instruments when flying. Instruments can be especially useful in conditions when the pilot has trouble spatially orienting himself.

An Adobe Acrobat (PDF) file of the entire report:
http://naca.central.cranfield.ac.uk/reports/1922/naca-tm-98.pdf