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Lothar Sieber
Lothar Sieber (7 April 1922 in Dresden, Germany – 1 March 1945 near Stetten am kalten Markt, Germany) was a German test pilot who was killed in the first vertical take-off manned rocket flight, in a Bachem Ba 349 "Natter".
Before he became a test pilot for Bachem, he piloted an Arado Ar 232 in highly risky sorties. Shortly before his flight, he had become engaged to Gertrud Naudit, a Luftwaffenhelfer. Sieber had held the rank of Second Lieutenant but was demoted to Private after an alcohol-related AWOL. Posthumuously he was promoted to Oberleutnant.
==The first manned rocket flight==
On 1 March, at the Truppenübungsplatz Heuberg, Sieber entered the Natter ''Ba 349A M23'' for the first manned vertical take-off of a rocket. The experienced test pilot was told to execute a half roll if the Natter should veer off course. The start worked as planned, Sieber executed the roll maneuvers as soon as the Natter changed its course. After the release of the solid fuel rocket boosters it could be seen that the canopy came off and fell to the ground while the Natter disappeared into the clouds.
Eyewitnesses reported that the main engine kept firing. Soon, the Natter reappeared vertically from the clouds and hit the ground at high speed. All eyes searched for Sieber appearing with his parachute from the clouds, but to no avail.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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