Question

Question 4 Using the vibration nomograph, write down your choife of a suitable vibration velocity level (mm/s) for a helicopter rotor to work in Satisfactory' conditions 1000 1000 mm/s 10 mA 100 Destructive Displacement (rms) 1 mm mm 10 mm 100 Wall damage 100 am Cracks 100 mA 71 mm/s Impermissible 30 10 No damage 10 am Minor Unsatisfactory damage Threshold Satisfactory Reduced comfort 24-h Jm exposure 1 m 01 Good Threshold of perception 1 am 011 mms 0.1 Acceless irms Acceptable vibration eavelope for labs that maintain 0.1 am 00l am 001 0.0001 m reierence standards Velocny ms) imms B825 um 0001 a 100 200 1000 ms [9.51 8 01 ms Structural d 998 d oS alewep a.001 ms Iunnn

Answer 1

Soluton Given that vibdion usng vikaten eleiby hal capta Euital Conclakan Saks hetny fr aton mam 2 24 - Crom vihvtion mono grah o.Limm Amplblal reguney taton) X -(2.24) o.umm X x 3-iu x 5xD 7 Lm Vna nmangaph h 2 23.2.3 mm otor maM Qedueel otiy ma - DO vlumms p to vlouby V ?