BEIJING -- The Caihong-4 (CH-4) unmanned aerial vehicle (UAV) has become the first large civil UAV in China to receive a special airworthiness certificate from the Civil Aviation Administration of ...

China's independently developed CH-4 drone with an upgraded domestic heavy-fuel engine has recently completed its maiden flight. The domestic engine enables the updated version of the CH-4 drone to ...

CASC said it has finally test-flown its CH-4 UAV with a heavy-fuel engine, after four years of development. (IHS/Kelvin Wong) China's domestically manufactured CH-4 unmanned aerial vehicle (UAV) is ...

The defense authority on the island of Taiwan on Saturday spotted a CH-4 armed reconnaissance drone of the Chinese People’s Liberation Army (PLA) near the island for the first time, marking the sixth ...

在一个晴朗的日子，一架我国自主研发的彩虹四号无人机（以下简称CH—4）悄悄地起飞升空。 只见其先是在到达预先规划的区域上空盘旋了一圈，就让远在后方地面站的操作人员通过飞机载荷发现在一条简易的沙漠公路边停靠着两辆卡车，车上放置着火炮之类的 ...

9月5日，2025世界智能产业博览会在渝开幕，重庆梁平以“西部低空之城”为主题，携CH-4、CH-9等多款无人机亮相。智博会期间，梁平将通过室内外联动展示、场景发布、赛事活动等多元形式，全面呈现低空经济产业生态链发展成效，深化“新和富美”梁平印象。

Here's What You Need To Remember: It’s unclear why Amman is trying to get rid of its CH-4s just three years after acquiring them. But it’s possible the divestment is related to Jordan’s ongoing ...

CH-4指的是柴机油质量标准，由美国石油协会认证，C代表柴油，H是第三等级，4表示适用于4冲程柴油机。在美国石油协会的认证等级里，字母越靠后等级越高。1998年它被引入，适用于四冲程柴油发动机，满足当年废气排放标准，能使用含硫量0.5%的燃油。它在抗 ...

Key point: The Chinese drones seem to be going out of style. China’s CH-4 killer drone appears to be falling out of favor with some of its major operators. The Iraqi air force is down to just one ...

Pakistan has received five Cai Hong 4 (Rainbow 4, or CH-4) multirole medium-altitude long-endurance (MALE) unmanned aerial vehicles (UAVs) from China, according to export-import (EXIM) logs on the ...