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gyroscopic    音标拼音: [dʒ,ɑɪrəsk'ɑpɪk]

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  • rotorcraft - How Helicopters Change Attitude (Gyroscopic Precession or . . .
    $\begingroup$ @xxavier, thank you for the resource! I skimmed the first several pages and it seems to be similar to the explanation Wayne Johnson gives starting in section 5-5 pg 184, which concludes "By this means the pilot can control the attitude of hte helicopter, using cyclic pitch (swashplate tilt) to produce moments about the helicopter center of gravity by tilting the thrust vector"
  • Why dont single-engine jets suffer severe gyroscopic effects?
    Therefore the gyroscopic effect of the engine has a big impact on manueverability Now compare that with an F16 powered by an GE F110 engine The high pressure spool of the engine has a mass on the order of 200 kg (the whole engine is about 2000 kg and the high speed rotating spool is about 10% of that sorry I don't have a specific reference)
  • How do gyroscopic instruments work? - Aviation Stack Exchange
    Now, the resultant of these two makes the spin axis to align along the axis A' Basically, the spin angular momentum 'chases' the torque in the same plane This is the basis of gyroscopic precession See Prof Walter Lewin's lecture on Rolling motion and gyroscopes for a thorough explanation
  • aerodynamics - If the RPM of the Gyro is increased due to high Vacuum . . .
    Rigidity (or gyroscopic inertia); and; Precession Rigidity Rigidity is the property of a gyroscope which resists any force tending to change the plane of rotation of its rotor As a result of rigidity, the spin axis tends to maintain a fixed direction in space
  • gyroscopic instruments - Gyro Erection System - Aviation Stack Exchange
    Gyroscopes have two types of motion The gyroscope spins within its housing (usually at a pretty high speed) The housing can change attitude within some lim
  • Is precession a problem for two-bladed propellers?
    Wind turbines suffer not from precession per se, but from precession 'wobbling', when the gyroscopic force varies dramatically over a revolution Normally, a 3-bladed prop would be heavier than a 2-bladed one, and will have greater gyroscopic effect (at the same RPM) However, it will be better balanced across a revolution
  • Retreating Blade Stall, P-Factor, and Gyroscopic Precession
    Whenever the prop disk is actually pitching or yawing-- regardless of whether the cause of the movement is P-factor or something else-- then you have to consider the gyroscopic effect, which makes the force act as if it is applied to the blade disk at a point 90 degrees further along in the direction of rotation
  • What and when was the first gyroscopic flight instrument introduced . . .
    It appears that the first gyroscopic flight instrument in aviation was a gyroscopic stabilizer, with the purpose of maintaining stability and control in a Curtiss C-2 biplane; it was first used (publicly) in 1914 For this, the inventors, Elmer A and Lawrence B Sperry were awarded the Collier Trophy in 1914 Apparently they did this by,
  • helicopter - Are gyroscopic effects of tail rotor noticeable with hover . . .
    Because they are gyroscopic, rotors simply do not roll easily The aerodynamic forces needed to roll the rotor are typically four or five times the forces needed to roll the hull A violent roll may reflect in the helicopter's torque meter reading because of the extra power needed
  • aerodynamics - In the gyroscopic precession left turning tendency, why . . .
    The prop is a big gyro It's the gyroscopic precession force created at the propeller when it's subjected to an input changing its axis of rotation, where, as with any gyro, the inertial resistance to the change in axis acts at 90 degrees rotationally to the input





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