曝光台 注意防骗
网曝天猫店富美金盛家居专营店坑蒙拐骗欺诈消费者
Models, mock-ups, and cut-aways are additional instructional aids. A model is a copy of a real object. It can be an enlargement, a reduction, or the same size as the original. The scale model represents an exact reproduction of the original, while simplified models do not represent reality in all details. Some models are solid and show only the outline of the object they portray, while others can be manipulated or operated.
Although a model may not be a realistic copy of an actual piece of equipment, it can be used effectively in explaining operating principles of various types of equipment. Models are especially adaptable to small group discussions in which students are encouraged to ask questions. A model is even more effective if it works like the original, and if it can be taken apart and reassembled. With the display of an operating model, the students can observe how each part works in relation to the other parts. When the instructor points to each part of the model while explaining these relationships, the students can better understand the mechanical principles involved. As instructional aids, models are usually more practical than originals because they are lightweight and easy to manipulate.
A mock-up is a three-dimensional or specialized type of working model made from real or synthetic materials. It is
4-29
used for study, training, or testing in place of the real object, which is too costly or too dangerous, or which is impossible to obtain. The mock-up may emphasize or highlight elements or components for learning and eliminate nonessential elements.
Cut-aways, another type of model, are built in sections and can be taken apart to reveal the internal structure. Whenever possible, the various parts should be labeled or colored to clarify relationships.
Production and equipment costs are limiting factors to consider in developing and using models, mock-ups, and cut-aways. Depending on the nature of the representation, cost can vary. For instance, scale replicas are often very expensive. In general, if a two-dimensional representation will satisfy the instructor’s requirement, it should be used.Test Preparation Material
Test preparation material applies to an array of paper, video, and computer software products that are designed by commercial publishers to help student applicants prepare for FAA tests. While test preparation materials may be effective in preparing students for FAA tests, the danger is that students may learn to pass a given test, but fail to learn other critical information essential to safe piloting and maintenance practices. In addition, FAA inspectors and designated examiners have found that student applicants often exhibit a lack of knowledge during oral questioning, even though many have easily passed the FAA knowledge test. A major shortcoming of test preparation materials is that the emphasis is on rote learning, which is the lowest of all levels of learning.
Test preparation materials, as well as instructors, that dwell on teaching the test are shortchanging student applicants. All instructors who use test preparation publications should stress that these materials are not designed as stand-alone learning tools. They should be considered as a supplement to instructor-led training.Future Developments
Electronic communications, including use of computer databases, voice mail, e-mail, Internet, World Wide Web, and satellite-based, wireless communications, are routine and this explosion of information access affects aviation training. It will be even more significant in the future.
Computer technology continues to advance in quantum leaps, challenging traditional ways of teaching. For example, voice-recognition technology, which lets computers accept spoken rather than keyed input, is highly effective for technical training.
Miniature electro-optical devices allow computer-aided information to be projected electronically on sunglass-style eye wear which is connected to a lightweight, belt mounted computer. Computer-aided information is particularly useful for aviation maintenance activities. For example, it would be possible for a technician’s eyes to easily move back and forth from computer-generated technical data to the actual hardware while diagnosing and correcting a maintenance problem.
Trends in training indicate a shift from the typical classroom to more extensive use of a lab-type environment with computer work or study stations. Using simulation devices, computer networks, and multimedia programs, students become more actively involved and responsible for their own training. Aviation-related learning centers are usually associated with colleges, universities, and research centers. The airlines, as well as aeronautical programs at some colleges and universities, have used similar facilities for many years.
Another type of computer-based technology, virtual reality (VR), creates a sensory experience that allows a participant to believe and barely distinguish a virtual experience from a real one. VR uses graphics with animation systems, sounds, and images to reproduce electronic versions of real-life experience. Despite enormous potential, VR, in its current stage of development, has drawbacks. It is extremely expensive, and versions with a head-mounted display sometimes produce unfavorable side effects.
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：
Aviation Instructor’s Handbook下(29)
