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Zeppelin-Staaken R-series

Imperial Germany (1917)

Detailing the development and operational history of the Zeppelin-Staaken R-series Heavy Bomber Aircraft.

 Entry last updated on 5/31/2016; Authored by Staff Writer; Content ©

  Zeppelin-Staaken R-series  
Picture of Zeppelin-Staaken R-series Heavy Bomber Aircraft
Picture of Zeppelin-Staaken R-series Heavy Bomber Aircraft

The Zeppelin-Staaken Z-series of heavy bombers were the largest such aircraft to serve in World War 1, these with the German Air Service.

When World War 1 (1914-1918) bogged down into the stubborn battles of trench warfare in the Autumn of 1914, it fell to alternative measures to help change the tide of the war. Bombing enemy homefronts proved an acceptable part of the war to ensure victory and early attacks for the Germans were handled by its Zeppelin fleet which could fly higher than enemy defenses could engage. However, as the war went on, these systems proved too susceptible to environmental conditions as well as advances made in enemy tactics and technology, forcing the use of twin-engined bombers. In time, these medium designs evolved to become much larger solutions that became what was eventually termed the "heavy bomber". One of the earliest examples of such an aircraft became the Russian Sikorsky Ilya-Muromets four-engined bomber which debuted in 1913.

Using the large, existing Zeppelin hangars, the Germans worked on their own multi-engine bomber forms and one ultimately realized product became the Zeppelin-Staaken R-series. These bombers incorporated enclosed cockpits, which were rather novel for the time, multiple engine nacelles and a network of machine guns for local defense. Bomb loads reached over 4,000 lb. The aircraft offered the operational ranges required in reaching the enemy while also providing the needed bomb-carrying capability that light and medium bomber models lacked.

The first available mark was R.VI which arrived in late-June of 1917 and were pressed into service as night bombers against the Russians over the Eastern Front from August onwards. By September, they began operations in the West when stationed in German-held Belgium territory. Raids against the British mainland followed and lasted into May of the following year with none were lost to enemy action. Four aircraft were ultimately destroyed by enemy action during the course of the war with six lost to accidents.

Five major variants of the R-bomber were conceived beginning with the aforementioned R.VI. These marked the first true production versions of the line and were outfitted with 4 x Maybach Mb IV engines of 245 horsepower each. An alternative engine configuration became 4 x Mercedes D.IVa engines of 260 horsepower each. Eighteen examples made up this mark with one reserved as an engine testbed.

The R.VII mark came next - though with only one example built - and added a revised tail unit for improved stability. This sole aircraft was lost while in transit to the frontline. Variant R.XIV was outfitted with 5 x Maybach Mb IV engines, four arranged in paired "push-pull" nacelles and the fifth set in the nose as a puller engine. Three were ultimately built with one being lost to enemy action. R.XV appeared with the same five engine arrangement debuted in the R.XIV and was produced in three examples. A primary physical difference of this mark was a large tail fin added at the center of the tail unit arrangement. This group did not see formal combat service in the war.

The Type L was a large floatplane conversion of the land-based bomber to operate from water for the German Navy. Large floats were appropriately added in place of a traditional wheeled undercarriage and a sole prototype was completed. However, this example crashed while being tested. The Type 8301 followed suit as a possible seaplane conversion but introduced an all-new fuselage while retaining the wing elements of the previous bomber design. Again a float undercarriage allowed for waterborne take-off and landing and this design netted three examples in all.

Only two German Air Service squadrons were ever equipped with the R-bomber - Riesenflugzeugabteilung 500 (Rfa500) and 501 (Rfa501). As stated, the bomber also saw some limited service with the Imperial German Navy for a time.

Twenty-nine of these large bombers were built.
Any available statistics for the Zeppelin-Staaken R-series Heavy Bomber Aircraft are showcased in the areas immediately below. Categories include basic specifications covering country-of-origin, operational status, manufacture(s) and total quantitative production. Other qualities showcased are related to structural values (namely dimensions), installed power and standard day performance figures, installed or proposed armament and mission equipment (if any), global users (from A-to-Z) and series model variants (if any).
Zeppelin-Staaken R.VI Specifications
National Flag Graphic
Imperial Germany
Year: 1917
Type: Heavy Bomber Aircraft
Manufacturer(s): Zeppelin-Staaken - Germany
Production: 29
Supported Mission Types
Ground Attack
Close-Air Support
Airborne Early Warning
Electronic Warfare
Aerial Tanker
Passenger Industry
VIP Travel
Business Travel
Special Forces
Crew: 7
Length: 72.51 ft (22.1 m)
Width: 138.45 ft (42.20 m)
Height: 20.67 ft (6.30 m)
Empty Weight: 17,463 lb (7,921 kg)
MTOW: 26,120 lb (11,848 kg)

Installed Power
4 x Mercedes D.IVa 6-cylinder inline piston engines developing 260 horsepower each OR 4 x Maybach Mb.IVa piston engines of 245 horsepower each; arranged as two pusher and two puller engine pairs.

Standard Day Performance
Maximum Speed: 84 mph (135 kph; 73 kts)
Maximum Range: 497 mi (800 km; 432 nm)
Service Ceiling: 14,108 ft (4,300 m; 2.67 mi)
Rate-of-Climb: 350 ft/min (107 m/min)

1 x 7.92mm Parabellum machine gun in trainable nose position.
1 x 7.92mm Parabellum machine gun in trainable upper wing pulpit position.
1 x 7.92mm Parabellum machine gun in rear fuselage cockpit on flexible mount.
1 x 7.92mm Parabellum machine gun in rear ventral position.

Up to 4,400 lb of bombs.

Operators List
Imperial Germany

Series Model Variants
• R.IV - Initial production model; four engines; 18 examples
• R.VII - Revised tail unit; single example
• R.XIV - 5 x Maybach Mb IV engines; three examples
• R.XV - Five engine arrangement; central fin added to tail unit; three examples built.
• Type L - Seaplane conversion; single example
• Type 8301 - Seaplane conversion; three examples

Images Gallery