The Morane-Saulnier H was a French single-engine, single-seat parasol monoplane fighter aircraft that was designed and produced by the Morane-Saulnier company before World War I. The aircraft was a further development of the Morane-Saulnier L, and it was one of the first aircraft to be equipped with a synchronization gear for firing through the propeller arc.

The H had a wooden frame covered in fabric and was powered by a 80 horsepower Le Rhône 9C rotary engine. It had a wingspan of 8.16 meters and a length of 5.79 meters. The aircraft was armed with a single .303 Lewis machine gun, which was mounted on the upper wing and synchronized to fire through the propeller arc.

The Morane-Saulnier H was known for its speed and maneuverability, and it was particularly effective in aerial combat. Its synchronization gear allowed it to fire its machine gun without striking the propeller, giving it a significant advantage over earlier aircraft that were equipped with fixed forward-firing guns. The aircraft’s parasol wing design also provided an unobstructed field of view for the pilot, which further improved its effectiveness in combat.

The Morane-Saulnier H saw significant use in combat during World War I, and it was used by a number of French and other allied air forces. It was particularly effective in aerial combat, where its speed and maneuverability allowed it to outmaneuver and outfight its opponents. The aircraft’s success in combat helped to establish the parasol wing design as a viable alternative to the biplane for fighter aircraft design.