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西工大垂直管射折叠翼无人机研究取得重大突破！研究团队通过探明折叠翼面瞬时变体中的力系生成机制，揭示了变体几何布局-动力拓扑-气动力系架构-高仰角起飞瞬时转弯等时变耦合机理，突破了水面摇晃态垂直发射气动力系拓扑结构变体重构技术，实现“游隼”长航时折叠翼无人机国内首次深水释放、水面漂浮垂直冷发射无人机自主飞行验证与首次电动后... 阅10 转0 评0 公众公开 23-05-29 09:46 |
闲说飞行汽车。我在刚开始制作多旋翼时就看到一张美军多旋翼飞行汽车的照片，八个分动的油机驱动旋翼，下面是一个类似面包车的车厢，这玩意真的飞起来了，以后就没有下文了。所以现在飞行汽车的飞行时间一般为30分钟，飞行距离不可能超过80公里。多旋翼属于天生不稳定的飞行器，依赖电子控制系统对电机转速的控制保持飞行，任何一个节点上的问... 阅23 转1 评0 公众公开 23-05-17 13:38 |
In this type of jamming, also called “point jamming” or “narrow-band jamming”, all thepower output of the jammer is concentrated in a very narrow bandwidth, ideally identicalto that of the radar. Spot jamming is usually directed against a specific radar and requiresa panoramic receiver to match the jamming signal ... 阅53 转1 评0 公众公开 23-04-23 09:40 |
There is one exception to this rule, they are called Over the Horizon Radar (OTH) radar.Regardless of the systems involves, radar detection is a quantity characteristic that affected by factors such as radar peak power, pulse repetition frequency, target’s radar cross section, radar gain and so on.Radar detection ra... 阅103 转2 评0 公众公开 23-04-21 18:00 |
印度开始为“先进中型战斗机”开发自动视觉自主滑行、起飞和着陆功能。印度第五代“先进中型战斗机”（AMCA）项目拟采用自主技术，其研究人员已着手开发基于视觉的“自主滑行、起飞和着陆”（ATTOL）系统。ATTOL系统作为ATOL的改进系统，可能首先用于印度攻击无人机（ISUAV）、未来战斗无人机（Futuristic Unmanned Fighter Aircraft，FUFA）项... 阅13 转0 评0 公众公开 22-12-04 18:51 |
NASA''''''''s X-59A Quiet Supersonic Technology aircraft, or QueSST, now has its F414-GE-100 turbofan engine, another important step toward its first flight, which is currently scheduled to take place next year.The F414 series is currently used primarily to power Boeing'''&#... 阅30 转0 评0 公众公开 22-11-17 16:10 |
Titanium and the SR71.Here Titanium wins.It begins by first converting the titanium dioxide to titanium chloride.It’s pretty clear that titanium is expensive and extremely difficult to work with. But without Titanium and the SR-71, we wouldn’t be where we are today. Aluminum was an option. But Aluminium simply canno... 阅7 转0 评0 公众公开 22-09-20 09:15 |
Many rotation detonation engines have more than one detonation wave circling the chamber at the same time.Among the weapon-oriented programs being developed by the Air Force Research Laboratory is another rotation detonation engine enterprise that could offer America’s fighters a big boost in range and speed: an RDE ... 阅45 转0 评0 公众公开 22-08-13 12:07 |
The world’s first space flight for the rotating detonation engine, and a glimpse at a new sample ret The world’s first space flight for the rotating detonation engine, and a glimpse at a new sample return capsule – Cosmos.But as combustion finished and this first stage fell away, the rocket switched to a second source of power: a Rotating Detonation Engine System (RDE).However, the detonation wave would usually sho... 阅13 转0 评0 公众公开 22-08-13 12:04 |
全球首艘安装风帆VLCC扬“帆”远航。11月13日，大船集团为招商轮船建造的全球首艘安装风帆装置的30.8万吨超大型原油船（VLCC ）80号船“凱力”轮成功交付，风帆助推VLCC即将从大连扬帆启航。“风帆技术示范应用开发”项目是围绕主力船型节能减排的创新性重点科研项目，由中船重工集团组织，大船集团牵头承担，招商轮船、中船重工702所、中国船... 阅116 转0 评0 公众公开 22-07-30 11:28 |
