From: Dale Thompson <Dale.Thompson@internetmci.com> Organization: InternetMCI Date: 07 Sep 96 17:09:09 References: 1
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firstname.lastname@example.org (JbTex) wrote: >When jet airliners take off, they seem to tuck their >landing gear away soon after liftoff. Is any retardation >applied to the spinning wheels before they're >lifted into their stowage position? Or can they >still be spinning after they're up? I can't speak for all aircraft.But as an aircraft technician on the DC9, as the gear is raised a certain ammount of hydraulic pressure is applied to the main landing gear brakes to stop their rotation.That is done through the landing gear control valve sequence, not something the crew has to do. That is designed to prevent any gyroscopic forces the tire/wheel assy. may cause as the gear is retracted. The nose landing gear wheel well has a row of bumpers that the tire hits and subsequently stops it's rotation.