The Longitudinal Stability and Control of the Tandem-Rotor Helicopter

[kolibri282]

report: ARCRAM 3223
author: A. R. S. Bramwell
title: The Longitudinal Stability and Control of the Tandem-Rotor Helicopter
http://naca.central.cranfield.ac.uk/...rc/rm/3223.pdf

Here is some material on the Chinook and a tandem RC heli:
http://www.tech-mp.com/Twinn_Rexx_docs/

Another one on tandem helicopters:
http://www.dtic.mil/dtic/tr/fulltext/u2/015832.pdf

The next one only partly covers tandem helicopters but might be a good one to start with:
title: Methods for Obtaining Desired Helicopter Stability Characteristics and Procedures for Stability Prediction
author: F. B. GUSTAFSON, ROBERT J. TAPWOTT
report: naca-tr-1350
http://ntrs.nasa.gov/archive/nasa/ca...1993084641.pdf

This one covers rotor interference:
author: Robert J. Huston
title: A Study of the Interference Effects in a Tandem Rotor Helicopter
http://ntrs.nasa.gov/search.jsp?R=19710066923