Add to ORKGAn investigation of the lateral-directional flying qualities of a tandem-rotor helicopter in forward flight was undertaken to determine desirable goals for helicopter lateral-directional flying qualities and possible methods of achieving these goals in the tandem-rotor helicopter. Comparison between directional stability as measured in flight and rotor-off model tests in a wind tunnel shows qualitative agreement and, hence, indicates such wind-tunnel test, despite the absence of the rotors, to be one effective method of studying means of improving the directional stability of the tandem helicopter. Flight-test measurements of turns and oscillations, in conjunction with analytical studies, suggest possible practical methods of achieving the ...
An investigation was made to determine the accuracy with which the lateral flight motions of a swept...
Calculated and measured values of helicopter rotor flapping angles in forward flight are compared fo...
In order to provide engineers interested in rotating-wing aircraft, but with no specialized training...
An investigation of the lateral-directional flying qualities of a tandem-rotor helicopter in forward...
Flight-test measurements, related analytical studies, and corresponding pilots' opinions of the spee...
Flight-test measurements, related analytical studies, and corresponding pilots' opinions of the spee...
A theoretical analysis of helicopter maneuver stability is made and the results are compared with ex...
Maneuver stability characteristics of tandem rotor transport helicopter determined by flight test - ...
As part of the general helicopter research program being undertaken by the National Advisory Committ...
The source of an appreciable pitching-moment difference between left and right hovering turns for a ...
Wind tunnel investigation of helicopter directional control in rearward flight in ground effec
Theoretically derived charts and equations are presented by which tail-rotor design studies of direc...
Chapter one presents a discussion of flight-test and analysis methods for some selected helicopter v...
A joint U.S. Army/NASA flight investigation was conducted utilizing a single-rotor helicopter to det...
A low-speed investigation was made in the Langley stability tunnel to determine and improve, if poss...
An investigation was made to determine the accuracy with which the lateral flight motions of a swept...
Calculated and measured values of helicopter rotor flapping angles in forward flight are compared fo...
In order to provide engineers interested in rotating-wing aircraft, but with no specialized training...
An investigation of the lateral-directional flying qualities of a tandem-rotor helicopter in forward...
Flight-test measurements, related analytical studies, and corresponding pilots' opinions of the spee...
Flight-test measurements, related analytical studies, and corresponding pilots' opinions of the spee...
A theoretical analysis of helicopter maneuver stability is made and the results are compared with ex...
Maneuver stability characteristics of tandem rotor transport helicopter determined by flight test - ...
As part of the general helicopter research program being undertaken by the National Advisory Committ...
The source of an appreciable pitching-moment difference between left and right hovering turns for a ...
Wind tunnel investigation of helicopter directional control in rearward flight in ground effec
Theoretically derived charts and equations are presented by which tail-rotor design studies of direc...
Chapter one presents a discussion of flight-test and analysis methods for some selected helicopter v...
A joint U.S. Army/NASA flight investigation was conducted utilizing a single-rotor helicopter to det...
A low-speed investigation was made in the Langley stability tunnel to determine and improve, if poss...
An investigation was made to determine the accuracy with which the lateral flight motions of a swept...
Calculated and measured values of helicopter rotor flapping angles in forward flight are compared fo...
In order to provide engineers interested in rotating-wing aircraft, but with no specialized training...