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Zeppelin-Lindau CS.I

The Zeppelin-Lindau CS.I, a reconnaissance seaplane of German origin, featured a unique design with a single engine and a low-wing monoplane layout.

With its distinct configuration, the Zeppelin-Lindau CS.I stood out as a German seaplane primarily used for reconnaissance purposes.

Its single engine and low-wing monoplane layout set it apart from other aircraft of its time.

A notable German creation, the Zeppelin-Lindau CS.I, was an exceptional reconnaissance seaplane characterized by its single-engine and low-wing monoplane design.

This aircraft was specifically designed to excel in reconnaissance missions, showcasing its innovative approach to aerial technology.

In 1918, Claude Dornier, who was employed at the Zeppelin factory in Lindau, suggested the development of a new seaplane for reconnaissance purposes, which would replace the Hansa-Brandenburg W.29.

However, during the flight trials, it was discovered that the power of the engine was inadequate.

As a result, the engine was replaced with a more powerful 195 hp (145 kW) Benz Bz.IIIbo water-cooled V-8 engine.

Despite the engine replacement, the test flights were halted after the armistice of World War I.

The seaplane was designed to be used for reconnaissance purposes, which would have been useful during the war.

However, with the end of the war, the need for such a seaplane diminished, and the project was discontinued.

Claude Dornier’s proposal for a reconnaissance seaplane was a significant development in aviation history.

Although the project was not successful, it paved the way for future advancements in seaplane technology.

The use of more powerful engines and the incorporation of new design features would eventually lead to the creation of more efficient and effective seaplanes.

The CS.I was a seaplane constructed with a twin-float design and an all-metal structure.

Its fuselage was built as a monocoque, providing a streamlined and sturdy framework.

Initially, it was equipped with a Mercedes D.IIIa six-cylinder in-line water-cooled engine, which delivered a power output of 170 horsepower (130 kW).

In terms of armament, the CS.I featured a fixed forward firing LMG 08/15 Spandau machine gun of 7.92 mm (0.312 in) calibre, synchronized with the propeller.

Additionally, it was armed with a flexibly mounted Parabellum MG 14 machine gun of the same caliber in the rear cockpit.

The CS.I seaplane was designed with a twin-float configuration, which involved two separate floats attached to the aircraft’s structure.

This design allowed the seaplane to land and take off from water surfaces.

The entire aircraft was constructed using metal materials, ensuring durability and strength.

The fuselage, in particular, was built as a monocoque, which means that the outer skin of the aircraft provided most of its structural support.

This design choice resulted in a streamlined and lightweight fuselage, contributing to the overall performance of the CS.I.

Powering the CS.I was a Mercedes D.IIIa engine, featuring six cylinders arranged in a straight line.

This water-cooled engine delivered a power output of 170 horsepower (130 kW), providing the necessary thrust for the seaplane’s operations.

The use of a water-cooled system helped regulate the engine’s temperature, preventing overheating during prolonged flights.

With its reliable power source, the CS.I was able to achieve satisfactory performance in terms of speed and manoeuvrability.

The CS.I was armed with a combination of machine guns to ensure offensive capabilities.

In the front cockpit, a fixed forward firing LMG 08/15 Spandau machine gun was installed.

This machine gun was synchronized with the propeller, allowing the pilot to fire through it without damaging the aircraft’s blades.

In the rear cockpit, a flexibly mounted Parabellum MG 14 machine gun was present.

This machine gun could be aimed and fired in various directions, providing defensive capabilities against rearward threats.

Both machine guns had a calibre of 7.92 mm (0.312 in), enabling the CS.I to engage enemy targets effectively.
13.18 m (43 ft 3 in)
Wing area
29.8 m2 (321 sq ft)
Empty weight
960 kg (2,116 lb)
Gross weight
1,479 kg (3,261 lb)
1 × Benz Bz.IIIbo V-8 water-cooled piston engine,
145 kW (195 hp)
2-bladed wooden fixed-pitch propeller
Maximum speed
150 km/h (93 mph, 81 kn)
1x fixed forward-firing, synchronised 7.92 mm (0.312 in) LMG 08/15 Spandau machine gun
1x flexibly mounted 7.92 mm (0.312 in) Parabellum MG 14 machine-gun in the rear cockpit.
German Aircraft of the First World War-Peter Gray & Owen Thetford.

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