Hispano-Suiza E-34

E-34
Hispano-Suiza E-34 in Aeronáutica Naval markings
Role	Basic trainer
National origin	Spain
Manufacturer	Hispano-Suiza
Designer	Vicente Roa Miranda
First flight	c.1935
Number built	6
Developed from	Hispano-Suiza E-30

The Hispano-Suiza E-34, later renamed Hispano HS-34, was a Spanish single engine, tandem seat biplane, designed as a basic trainer. Twenty five were ordered by the Aeronáutica Naval, but only five had been completed when the Spanish Civil War intervened.

In 1934, the Aeronáutica Militar called a competition for a Spanish-designed and built basic trainer. Three companies responded, including Hispano-Suiza.

The E-34 was a single engine biplane, seating two in tandem. It had unswept single bay wings of the same span and constant chord, with some stagger. The wings were fabric-covered wooden structures. Only the lower wing carried dihedral. The N-shaped interplane struts were assisted by flying wire bracing. The upper wing was supported over the fuselage by a pair of N-shaped struts to the upper fuselage longerons. The upper centre section had a large cut-out in its trailing edge for better upward visibility, and also contained the fuel tank. Ailerons were fitted only on the lower wing. The HS-34 had its tailplane mounted on top of the fusealge, carrying split elevators. The rudder was horn balanced.

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