时间：2011-03-11 23:11来源：蓝天飞行翻译 作者：admin 点击：次
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(2) For turbine engine powered airplanes certificated after September 30, 1958, but before August 30, 1959, an area beyond the takeoff runway extending no less than 300 feet on either side of the extended centerline of the runway, at an elevation no higher than the elevation of the end of the runway, clear of all fixed obstacles, and under the control of the airport authorities.” Cleco fastener. A patented spring-type fastener used to hold metal sheets until they can be permanently riveted together. A special pair of Cleco pliers pulls the spreader from between the jaws of a Cleco fastener so the jaws will pull together enough for them to pass through the rivet holes drilled in the metal. When the fastener is installed, the pliers release the spreader, which forces the jaws out against the metal and pulls the sheets tightly together. clevis. A U-shaped fitting which has matching holes in the arms of the U. A clevis pin or clevis bolt is passed through the holes to fasten a control cable to a control horn or to fasten a push-pull rod to a bell crank. clevis bolt. A special bolt used to attach a clevis to a control horn or bell crank so the clevis is free to move. Clevis bolts have a short threaded section separated from the shank of the bolt by a shallow groove. The head of a clevis bolt is slotted so it can be turned with a screwdriver, but the slot is so shallow very little torque can be applied. A thin nut is used on a clevis bolt, and this nut should not be tightened enough to keep the clevis from moving freely on the device to which it is connected. clevis pin. A flathead pin used to attach a clevis to a control horn. The clevis pin is inserted through the holes in the clevis and the control horn, a washer is placed on the shank of the clevis pin, and the clevis pin is secured with a cotter pin passed through the hole in its shank. climate (meteorology). The meteorological conditions, including temperature, precipitation, and wind that characteristically prevail in a region or area. climatology (meteorology). The study of climate. climbing blade (helicopter operation). The blade of a helicopter rotor that is in track when checked on the ground or in a hover, but rises above the other blade in forward flight. climb-out. The portion of flight operation between takeoff and the initial cruising altitude. climb-out speed. 14 CFR Part 1: “With respect to rotorcraft, means a referenced airspeed which results in a flight path clear of the height-velocity envelope during initial climbout.” “Climb to VFR” (air traffic control). ATC authorization for an aircraft to climb to VFR conditions within a control zone when the only weather limitation is restricted visibility. The aircraft must remain clear of clouds while climbing to VFR. clinometer. A device made of a curved, liquid-filled, glass tube, with a black glass ball inside it. A clinometer shows the relationship between the object on which it is mounted and a line perpendicular to the earth’s surface. |
