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Flight Evaluations of the Effect of Variable Phugoid Damping in a Jtb-26B Airplane.

AD118103

Publication Date	1956
Personal Author	Newell, F.; Rhoads, D. W.
Page Count	53
Abstract	A JTB-26B airplane, previously modified to permit in-flight variation of the dynamics of the phugoid motion, is used to quantitatively and qualitatively evaluate the effect of phugoid damping ratio in simulated instrument flying. One pilot's comments as to the relative acceptability of given damping configurations are presented and compared with corresponding quantitative measurements. It is established that phugoid damping is not a negligible parameter of good aircraft stability and control design, specifically when instrument flight is considered. Higher than present, inherent values of phugoid damping are beneficial. (Author)
Keywords	Bombers Control systems Damping Stability Control Design Acceptability B-26 Aircraft
NTIS Subject Category	51C - Aircraft
Corporate Authors	Cornell Aeronautical Lab., Buffalo, N. Y.
Document Type	Technical Report
NTIS Issue Number	196711
Contract Number	AF 33(616)-2736

Flight Evaluations of the Effect of Variable Phugoid Damping in a Jtb-26B Airplane.

Flight Evaluations of the Effect of Variable Phugoid Damping in a Jtb-26B Airplane.
AD118103

Publication Date	1956
Personal Author	Newell, F.; Rhoads, D. W.
Page Count	53
Abstract	A JTB-26B airplane, previously modified to permit in-flight variation of the dynamics of the phugoid motion, is used to quantitatively and qualitatively evaluate the effect of phugoid damping ratio in simulated instrument flying. One pilot's comments as to the relative acceptability of given damping configurations are presented and compared with corresponding quantitative measurements. It is established that phugoid damping is not a negligible parameter of good aircraft stability and control design, specifically when instrument flight is considered. Higher than present, inherent values of phugoid damping are beneficial. (Author)
Keywords	Bombers Control systems Damping Stability Control Design Acceptability B-26 Aircraft
NTIS Subject Category	51C - Aircraft
Corporate Authors	Cornell Aeronautical Lab., Buffalo, N. Y.
Document Type	Technical Report
NTIS Issue Number	196711
Contract Number	AF 33(616)-2736