VSPEED和LVC及VNAV差别(国外英文资料).doc

VSPEED和LVC及VNAV区别(国外英文资料) 1.VSPEED: vertical rate method... The plane will only rise or fall based on the value of a rate of increase or drop that you set with the speed wheel.. That means hell only keep it for you... As for the others, he wont take care of it... Especially speed... Pilots must be monitored and controlled at all times... In other words, this model does not provide speed protection... If you increase the rate to 4000 feet.. That plane will keep up 4000... But if the throttle doesnt have enough power at this time... Is bound to be unable to keep airspeed.. Even if you give the speed window a speed, and the auto throttle is connected.. He just foolishly kept the rate up.. And simply refuel the door to maintain your given speed... Once the gas is up, it doesnt keep pace.. Neither can he.. Or up by 4000?.. The result is that you stall... So the model is a direct but not safe model. 2.LVC.. Altitude layer change... This is a relatively safe model.. But he suffers from imprecise shortcomings... If you use this mode, drop the altitude... Then he is a method of losing kinetic energy to obtain kinetic energy.. Let me put it another way。。 If you want to go down.. Set a low height that you expect in the height window.. Then light LVC.. Then the plane will receive the highest idle throttle... Then maintain your speed by decreasing the height of the loss.. That is to say, the more speed you want... Then the rate of decline will be greater... The smaller the rate, the smaller the rate of descent.. Auto drive, always go back for speed.. Climb the same way.. You give a speed.. Youll get an upward rate... The smaller the speed, the higher the rate of increase. The automatic throttle will provide you with the appropriate location. But speed is what you give.. So the speed you give is not less than the stall speed of the aircraft.. There will be no stall... So this model is relatively safe.. With speed protection 3.VNAV mode.. It can be said to be the most accurate an