The Heinkel HE 1 (aka Caspar S 1) was a two-seat, low-wing

monoplane A monoplane is a fixed-wing aircraft configuration with a single mainplane, in contrast to a biplane or other types of multiplanes, which have multiple planes. A monoplane has inherently the highest efficiency and lowest drag of any wing confi ...

floatplane A floatplane is a type of seaplane with one or more slender floats mounted under the fuselage to provide buoyancy. By contrast, a flying boat uses its fuselage for buoyancy. Either type of seaplane may also have landing gear suitable for land, ...

, designed in 1921 by

German German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ger ...

designer Ernst Heinkel at

Caspar-Werke The Caspar-Werke was a German aircraft manufacturer of the early 20th century. It was founded in 1911 by Karl Caspar under the name Zentrale für Aviatik in Fuhlsbüttel. In its early years, the firm built Etrich and Rumpler types under licence, an ...

. The HE 1 was produced under licence in

Sweden Sweden, formally the Kingdom of Sweden,The United Nations Group of Experts on Geographical Names states that the country's formal name is the Kingdom of SwedenUNGEGN World Geographical Names, Sweden./ref> is a Nordic country located on ...

for the '' Marinen'' (Swedish Navy) in 1921 as the Svenska S.2. The HE 1 was powered by a Maybach Mb.IVa

engine An engine or motor is a machine designed to convert one or more forms of energy into mechanical energy. Available energy sources include potential energy (e.g. energy of the Earth's gravitational field as exploited in hydroelectric power gen ...

; one test aircraft was powered by a Siddeley Puma engine.

Specifications

Operators

; *

Swedish Navy The Swedish Navy ( sv, Svenska marinen) is the naval branch of the Swedish Armed Forces. It is composed of surface and submarine naval units – the Fleet () – as well as marine units, the Amphibious Corps (). In Swedish, vessels o ...

Swedish Air Force The Swedish Air Force ( sv, Svenska flygvapnet or just ) is the air force branch of the Swedish Armed Forces. History The Swedish Air Force was created on 1 July, 1926 when the aircraft units of the Army and Navy were merged. Because of the es ...

References

* {{Swedish military aircraft designations Low-wing aircraft 1920s German military reconnaissance aircraft 1920s Swedish military aircraft HE 001 Floatplanes Svenska Aero aircraft Single-engined tractor aircraft Aircraft first flown in 1923