On 5th December 1969 died Claudius Dornier, German aerial constructor and a founder of Dornier GmbH . Claudius Dornier was born in 1884. After graduating from engineering studies he worked with Ferdynand von Zeppelin and he did research on improving strength of light metals. Dornier GmbH founded that was founded in 1914, became well-known in … Dowiedz się więcej
On 4th December 1932 Kazimierz Chorzewski made a test flight in RWD-9 aircraft. It was a developed version of a RWD-6 aircraft and it was build out of social contribution for the Challenge International des Avions de Tourisme. A construction of this aircraft was a hybrid of a high wing with one straight engine. RWD-9 … Dowiedz się więcej
On the 2nd of December 1971 Mars 3 lander became the first spacecraft that attained soft landing on Mars. It was sent on 28th May form Baikonur Cosmodrome in Proton-K carrier rocket. It was supposed to gather information about atmosphere and surface of the Mars. After successful landing Mars 3 lander worked for 15 seconds … Dowiedz się więcej
On the 1st of December 1918 The Air Force Checkerboard became a national marking of the Polish Air Force under the regulation 38 of General Staff of the Polish Armed Forces. At first this marking consisted of 4 equal squares in national colours (red squares located in upper left and lower right corners). Contrasting red … Dowiedz się więcej