A form of lateral instability of lifting free-flight models towed by a helicopter

dc.contributor.author	W. J. G. Pinsker	en_US
dc.date.accessioned	2014-10-21T15:50:31Z
dc.date.available	2014-10-21T15:50:31Z
dc.date.issued	1968	en_US
dc.identifier.other	ARC/R&M-3641	en_US
dc.identifier.uri	https://reports.aerade.cranfield.ac.uk/handle/1826.2/2910
dc.description.abstract	Free-flight models suspended by cable from a helicopter have been observed to experience unstable lateral pendular oscillations when towed above a certain speed. A simplified mathematical model of this configuration, considering only roll angle and lateral displacement of the model, has produced a result in agreement with flight observation. A criterion is given for the prediction of the critical speed, and design parameters are discussed which will help to increase the speed range at which tow is possible free from instability in this mode.	en_US
dc.relation.ispartofseries	Aeronautical Research Council Reports & Memoranda	en_US
dc.title	A form of lateral instability of lifting free-flight models towed by a helicopter	en_US