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新西兰超轻型飞机 - 1985 年在怀托希 (Waitohi) 刚刚起步的 ZK-PJH

Microlight Aircraft of New Zealand - Fledgeling ZK-PJH at Waitohi in 1985

我之前曾发布过有关新西兰翼手龙微型飞机的文章,其中包括已在此处注册的一对雏龙,您可以在此处找到该帖子。在那篇帖子中,两只已注册的雏龙都有鸭翼,在帖子中我说我无法解释这一点。现在,Facebook 上马库斯旧飞机照片的马库斯·布莱德尔 (Marcus Bridle) 拿出了一张 1985 年在怀托伊拍摄的 ZK-PJH 的早期照片,其中显示了它没有鸭:这就解释了为什么它被注册为羽翼幼鸟(以及具有直接驱动螺旋桨)。非常感谢马库斯的照片。

螃蟹什么时候进化出标志性的侧身飞艇?科学家将其追溯到 2 亿年前的共同祖先

When Did Crabs Evolve Their Iconic Sideways Scuttle? Scientists Traced It to a Common Ancestor That Lived 200 Million Years Ago

The findings suggest that their famous lateral movement evolved just once. It may have helped the animals rapidly spread and diversify because moving in two directions meant they could easily escape predators

打造快车道:陆军开辟创新和技术之路

Forging The Fast Lane: The Army Establishes The Pathway For Innovation And Technology

Modernization is no longer defined by how quickly an idea is conceived, but by how rapidly and effectively it is delivered to Soldiers in operational en...