Chinese C919 large aircraft completed high-speed taxi first flew for the first time how long glide | |-largest aircraft | C919_ news

The morning of April 16, 2017, COMAC C919 large aircraft made in China prototype 4th runway of Shanghai Pudong International Airport for the first time a high-speed taxi test, test well. C919 has had first flown by technology review. At present, all technical testing is well underway prior to first flight.

Taxi test known as the last one before the first flight clearance, while the fast can be seen as the last in the most difficult hurdle, what steps China first flew from the pass it?

Development in accordance with the law, new aircraft taxiing refers to the State aircraft took off without leaving the ground carried out glide is the beginning of an airplane from static to dynamic. In General, the new aircraft taxiing is divided into: low-speed glide, Super glide, glide at high speed. For civil aircraft, low-speed taxiing the air control within 55 kilometers per hour, speed skating in speed of 55-170 kilometers, high speed skating over 170 kilometers per hour.

One familiar situation of experts 16th on global Times reporter introduced, glide test main validation aircraft in glide vibration State Xia, body structure whether firm, the system work whether normal, aircraft of brake efficiency (including aircraft of downtime brake function, and anti-sliding function and should brakes function,) whether meet requirements and aircraft of glide movement characteristics, like turn capacity, and precise keep line glide capacity and curve glide amendment capacity,. Taxiing at high speed, or to check the plane rotate the control force of the State, including the ability to maintain a balance in this case aircraft.

Taxiing is the last hurdle before the plane flew to ensure test security, from low speed to high speed taxiing to take course. Only when taxiing the validation results are fully in line with expectations, taxiing after exposure problems are ironed out, the aircraft was able to conduct its maiden flight.

First flown from a high-speed taxi test to pass several stages, the experts said, released video from the network view, large aircraft may also be 2-3 a high-speed taxi test, this process in the industry known as "roast", is in the process of constantly testing the functions of the aircraft, in particular functions of the flight control system. Meanwhile, test pilot team to continue to intensify their familiar with aircraft achieved between man and machine. Following this, we must test pilots flew the last round of training, so that they better understand the State of the aircraft, and to develop plans to respond to various situations. Even after release review, before the first flight chartered flight card to be issued by the Bureau and a series of preparations. The expert said, according to the present pace of taxi tests, the first flight should not far.

> Editor: Li Peng

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中国国产大飞机C919完成首次高速滑行 首飞还要多久|滑行|大飞机|C919_新闻资讯

　　2017年4月16日上午，中国商飞中国国产大飞机C919的原型机，在上海浦东国际机场4号跑道进行了首次高速滑行测试，测试顺利。此前C919已经通过首飞技术评审。目前，首飞前的各项技术测试工作正在有条不紊的展开。

　　滑行测试被称为首飞前的最后一关，而高速滑行则可以看做是最后一关中难度最大的一关，那中国大飞机距离首飞还要经过哪些步骤呢？

　　按照研制规律，新飞机地面滑行是指飞机在不离开地面起飞的状态下进行的滑行，是一架飞机由静态到动态的开始。一般来说，新飞机的地面滑行分为：低速滑行、中速滑行、高速滑行。对于民用飞机而言，低速滑行是将飞机时速控制在55公里以内，中速滑行时速为55-170公里，高速滑行为时速超过170公里。

　　一名熟悉情况的专家16日对《环球时报》记者介绍，滑行测试主要验证飞机在滑行振动状态下，机体结构是否牢固，各系统工作是否正常，飞机的刹车效率（包括飞机的停机刹车功能、防滑功能以及应急刹车功能等）是否满足要求以及飞机的滑行运动特性，比如转弯能力、精确保持直线滑行能力和曲线滑行修正能力等。在高速滑行时，还要检查飞机抬前轮状态下的操纵力，包括在这种情况下飞机保持平衡的能力。

　　地面滑行是飞机首飞前的最后一关，为保证试验安全，地面滑行采取从低速到高速的渐进过程。只有当地面滑行所验证的结果完全符合预期，滑行过程中暴露的各种问题得到妥善解决后，飞机才能够进行首飞。

　　对于从高速滑行测试到首飞还要经过哪几个阶段，这名专家表示，从网络上发布的视频来看，大飞机可能还要进行2-3次高速滑行测试，这个过程在业内被称为“烤机”，就是要在这个过程中不断检验飞机的各项功能，特别是飞控系统的功能。同时，试飞员团队也要不断加紧熟悉飞机，达到人机合一的状态。之后，就要对试飞员进行首飞前的最后一轮培训，让他们更好地了解飞机的状态，并制定应对各种情况的预案。之后还要进行放飞评审，首飞前还要获得局方颁发的特许飞行证等一系列准备。这名专家表示，按照目前的滑行测试的节奏，首飞应该不远了。

>责任编辑：李鹏

文章关键词：
滑行 大飞机 C919

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