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Rumpler D.I


Biplane Fighter


Imperial Germany | 1917



"The Rumpler D.I biplane fighter saw serial production late into the war and, therefore, none saw any combat service of note."

Power & Performance
Those special qualities that separate one aircraft design from another. Performance specifications presented assume optimal operating conditions for the Rumpler D.I Biplane Fighter.
1 x Mercedes D.III engine developing 160 horsepower.
Propulsion
112 mph
180 kph | 97 kts
Max Speed
22,966 ft
7,000 m | 4 miles
Service Ceiling
224 miles
360 km | 194 nm
Operational Range
Structure
The nose-to-tail, wingtip-to-wingtip physical qualities of the Rumpler D.I Biplane Fighter.
1
(MANNED)
Crew
18.9 ft
5.75 m
O/A Length
27.6 ft
(8.42 m)
O/A Width
8.4 ft
(2.56 m)
O/A Height
1,389 lb
(630 kg)
Empty Weight
1,865 lb
(846 kg)
MTOW
Armament
Available supported armament and special-mission equipment featured in the design of the Rumpler D.I Biplane Fighter .
2 x 7.92mm LMG 08/15 fixed, forward-firing machine guns synchronized to fire through the spinning propeller.
Variants
Notable series variants as part of the Rumpler D.I family line.
D.I - Base Military Designation; based on 8D1 prototype; limited production figures.
7D1 - Initial prototype model; plywood skinning; upper wing-mounted radiator (portside); comma-style rudder assembly; I-struts.
7D2 - Based on 7D1 with vertical stabilizer added.
7D4 - Based on 7D2 but with radiator relocated to central wing area; conventional strut works; fabric skinning at fuselage.
7D5 - Variant
7D7 - Based on 7D4; I-strut (thinner than previous); simplified wire works; new radiator located closer to nose.
7D8 - Based on 7D7 with even more simplified wire works.
8D1 - Finalized prototype becoming the D.I in serial production.


Authored By: Staff Writer | Last Edited: 07/31/2019 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.

Rumpler of Germany began development of a new, speedy biplane in 1917 as the "8D1" The type was intended for the reconnaissance / fighter role and therefore given good endurance and general performance. A first-flight was had in 1917 but a prolonged development period ensured that the aircraft would not be available in the numbers needed for 1918. The German Empire capitulated in November of that year to end the war.

The 8D1 was accepted into German Luftstreitkrafte service as the "D.I". By and large it was of a conventional and traditional design arrangement, utilizing unequal-span wing elements (over and under the fuselage), a well-streamlined fuselage, fixed (wheeled) undercarriage and single-finned tail unit. Balanced ailerons were set on the upper wing element and both wing assemblies were joined by I-struts making up a single bay appearance.

The initial prototype was known internally by Rumpler as the 7D1. It carried its radiator on the upper wing unit (portside) and construction of the aircraft included plywood skinning. The 7D2 was given a vertical stabilizer but more or less mimicked the earlier form. The wing struts were revised int eh 7D4 and the radiator element relocated to the wing's centerline area. Fabric skinning was added to the main fuselage area. Then came the 7D5 followed by the 7D7. In the latter, the design followed the 7D4 but revised the strut works once again. A new radiator was introduced and now located closer to the nose. The 7D8 was formed from the 7D7 and featured a simplified structural wire network. The 8D1 prototype represented the finalized form of the series and the one adopted as the D.I.

As built, the D.I showcased a length of 18.9 feet, a wingspan of 27.7 feet and a height of 8.4 feet. Empty weight was 1,400lb against a gross weight of 1,850lb. Power was served from a Mercedes D.III series engine of 160 horsepower, propelling the aircraft to speeds of 110 miles per hour out to a range of 230 miles and up to a service ceiling of 23,000 feet. Armament was 2 x 7.92mm LMG 08/15 machine guns in fixed, forward-firing mounts synchronized to fire through the spinning propeller blades.

The design of the D.I was not finalized until 1918 so this meant that its influence on the outcome of the war was as minimal as it could be. The German Air Service approved serial production of the type but the end of the war in November of 1918 meant the end of the road for the D.I series - none saw combat in the grand conflict and eventually fell to the pages of aviation history.

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Operators
Global customers who have evaluated and/or operated the Rumpler D.I. Nations are displayed by flag, each linked to their respective national aircraft listing.

Total Production: 30 Units

Contractor(s): Rumpler Flugzeugwerke - Imperial Germany
National flag of the German Empire

[ German Empire ]
1 / 1
Image of the Rumpler D.I
Image from the Public Domain.

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