9 September 1913 (27 August 1913, Old Style)

Цветная фотография Петра Николаевича Нестерова. Колоризация выполнена Ольгой (Colorization performed by Ol’goy Klimbim) Staff-Captain Pyotr Nikolayevich Nesterov, Imperial Russian Army, is wearing the Order of St. Anna, Order of St. Stanislav, and the Commemorative Medal for the Tercentenary of the Romanov Dynasty

9 September 1913 (27 August 1913, Old Style¹): At the Syretsky military airfield west of Kiev, Ukraine, Imperial Russia, Пётр Николаевич Нестеров (Pyotr Nikolayevich Nesterov), a military officer, flew a Nieuport IV.G into an inside loop, the first time this aerobatic maneuver had ever been performed.

Nesterov’s Loop

Also known as “Nesterov’s Loop,” or a “dead loop,” the inside loop was completed by entering from a dive, pulling the nose up and flying in a closed curve in the vertical plane (with the top of the airplane toward the center of the loop at all times), and then returning to a dive.

This maneuver is now performed beginning and ending in straight and level flight, but airplanes of the time had insufficient power.

Staff-Captain P.N. Nesterov (left) with his aircraft mechanic and the Nieuport IV. (Energy News)

The airplane flown by Lieutenant Nesterov was a Nieuport IV, designed by the French aircraft company, Société Anonyme des Éstablissements Nieuport, and built in Russia by several manufacturers. The variant flown by the Imperial Russian Air Service was powered by an air-cooled, normally-aspirated, 10.292 liter (628.048 cubic inch displacement Société des Moteurs Gnome Gamma seven-cylinder rotary engine, which produced 70 horsepower at 1,200 r.p.m.

“. . . I sat head down for a few moments and did not feel rush of blood to the head, I was sitting tightly, and legs pressed on the pedal … Tools in the open boxes remained in their places. Gasoline and oil also keeps the centrifugal force at the bottom of the tank, ie, at the top, and normally fed to the engine, which worked perfectly the entire upper half of the loop. In general, all this proves that the airplane made ​​regular rotation, only in the vertical plane, as all the time there was a dynamic equilibrium. With this only turning the air is defeated by man. . . . Man mistakenly forgot that in the air the support is everywhere, and he should cease to determine the direction in relation to the earth. “

The pilot innovator Peter Nesterov, National Technical University of Ukraine, Igor Sikorsky Kyiv Polytechnic Institute

P.N. Nesterov with the Nieuport IV in which he performed an inside loop.

One year later, 8 September 1914 (25 August 1914, Old Style), Nesterov became the first pilot to destroy an enemy aircraft in aerial combat. Flying a Morane Saulnier Type G near Zhovkva, Ukraine, Nesterov rammed an Albatros B.II. Both aircraft were so badly damaged that they crashed. The Austrian pilot, Franz Malina, and observer, Baron Friederich von Rosenthal, were both killed. Nesterov died of his injuries the following day.

Monument commemorating P.N. Nesterov and his inside loop at  Kiev, Ukraine. (Unattributed)

¹ Imperial Russia used the Julian Calendar until the October Revolution when the Gregorian calendar was adopted.

© 2017, Bryan R. Swopes

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Source: This Day in Aviation