时间:2012-06-08 09:45来源:蓝天飞行翻译 作者:航空 点击:次
To view this page ensure that Adobe Flash Player version 9.0.124 or greater is installed. ? Sideways flight State the height and ground speeds to be used in this exercise. Explain the effects of controls, as follows: cyclic to control direction of movement and ground speed pedals to control helicopter heading collective to control height. Describe the helicopter limitations as appropriate, e.g. weathercocking, flap-back, etc. Explain that it is vital to maintain a scan of the direction of movement, helicopter heading, height and instruments. ? Rearwards flight State the height and ground speeds to be used in this exercise. Height will generally be higher, to ensure adequate tail rotor clearance; speed will be slower. Explain the effects of the controls. Describe the visual cues and point out the hazards of disorientation when attempting to look in the direction of movement. Point out that, from an operational viewpoint, protracted rearward flight is seldom a requirement. If for some reason, it is necessary to move rearward over a long distance, frequent stops should be made to re-check that the area is free from obstacles. ? Turns about the nose and tail State the height and rate of turn to be used. Explain the effects of controls, pointing out the similarity to sideways movement. Describe the visual cues. AIR EXERCISE Demonstrate sideways flight in both directions, facing into wind. Student practice Demonstrate sideways flight in both directions facing 90° to the wind. Student practice Demonstrate sideways flight in both directions facing 180° to the wind. Student practice Demonstrate rearwards flight facing into wind. Student practice Demonstrate rearwards flight on various headings out of wind. Student practice Demonstrate turns about the tail in both directions. Student practice TIPS FOR INSTRUCTORS Make a thorough reconnaissance of the area before and during the lesson, looking particularly for bushes, fences, rocks, stumps and loose articles (FOD), as you will be operating close to the ground. |