法曼HF.20 – 照片和视频

这 法曼HF.20 and its derivatives were a family of reconnaissance aircraft produced in France shortly before and during the First World War. It was a refined version of the Farman MF.11 “Shorthorn” that did away with the type’s distinctive landing skids, and incorporated design features from Henri Farman’s designs. It entered service with the French, Belgian and Serbian armies in 1913 (two aircraft conducted reconnaissance during the Siege of Shkodër in the First Balkan War and one crashed), and with the British RFC and RNAS shortly after the outbreak of war. The type was also licence-built in the UK by Airco and Grahame-White. The HF.20 was seriously underpowered, and a variety of engines were trialled in the hope of correcting this, none with much success. The problem was eventually solved only when an engine of twice the power of the original powerplant was fitted to the HF.27 variant, by which time the aircraft was already obsolete. Nevertheless, the performance of the HF.20 made it adequate for use on secondary fronts.

源： 维基百科上的法曼HF.20

这 法曼HF.20 是由法国航空先驱亨利·法曼 （Henri Farman） 于 1913 年设计和制造的双座双翼侦察机。第一次世界大战期间，它被法国陆军和其他欧洲空军广泛使用。HF.20 有一个覆盖着织物的木制框架和一个由旋转发动机驱动的推进螺旋桨。它的翼展为 14.2 米，长度为 9.5 米。
它可以携带一名飞行员和一名观察员，以及一挺机枪和一些炸弹。HF.20 的最高速度为 105 公里/小时，航程为 300 公里。它因其稳定性、机动性和耐力而受到赞扬，但它也容易受到敌人的火力攻击，并且飞行员的能见度很差。随着战争的进行，HF.20 逐渐被更先进的飞机所取代，但它一直服役到 1918 年。