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AEG D.I


Biplane Fighter Prototype Aircraft (1917)


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The AEG D.I biplane fighter program was marred by crashes of two of the three prototypes - as such the 20-strong pre-series order was cancelled.



Authored By: Staff Writer | Last Edited: 07/31/2019 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.
Allgemeine Elektricitats-Gesellschaft AG (AEG) served the German Empire in World War 1 (1914-1918) as an aircraft maker. Among their contributions was the short-lived AEG D.I biplane fighter. This design managed only three prototypes for its time and a first-flight was held during May 1917. The AEG Dr.I was an off-shoot of the series, developed along the lines of a triplane fighter. It was no more successful with just one example constructed.

The D.I marked the first fighter to be developed by the company and it incorporated traditional biplane qualities - an over-under wing arrangement, fixed wheeled undercarriage (tail-dragger), and open-air cockpit. The wings were slightly unequal span with a single bay each and single struts reinforced the members outboard of the fuselage. The pilot sat in an open-air cockpit under and aft of the upper wing assembly. The engine was fitted forward of the pilot in a streamlined housing and drove a two-bladed propeller at the nose. Internally there was a steel-tubed understructure and fabric skinning was used along the wing surfaces. Proposed armament was 2 x 7.92mm LMG 08/15 machine guns set over the nose and synchronized to fire through the spinning propeller blades. Power was from a Daimler D.IIIa 6-cylinder liquid-cooled inline piston engine of 160 horsepower.

As tested, the D.I managed a top speed of 127 miles per hour and ranged out to 300 miles. Its service ceiling was 16,000 feet and initial rate-of-climb reached 1,313 feet per minute.

A total of three prototypes were eventually completed by AEG with the first arriving in May of 1917. Between August and September of that year, the aircraft saw a lengthening of its fuselage to improve stability. The radiators were changed in the second and third prototypes.

Despite a prototype having crashed during testing, some twenty pre-production forms were ordered by the German Air Service for active evaluations. Following the crash of a second prototype on September 5, 1917, this commitment was abandoned and the D.I fell to history - proving to be unstable and a handful at the controls.

Specifications



Service Year
1917

Origin
Imperial Germany national flag graphic
Imperial Germany

Status
CANCELLED
Development Ended.
Crew
1

Production
3
UNITS


Allgemeine Elektricitats-Gesellschaft AG (AEG) - Imperial Germany
National flag of the German Empire German Empire (cancelled)
(OPERATORS list includes past, present, and future operators when applicable)
Air-to-Air Combat, Fighter
General ability to actively engage other aircraft of similar form and function, typically through guns, missiles, and/or aerial rockets.
X-Plane (Developmental, Prototype, Technology Demonstrator)
Aircraft developed for the role of prototyping, technology demonstration, or research / data collection.


Length
20.0 ft
(6.10 m)
Width/Span
27.9 ft
(8.50 m)
Height
8.7 ft
(2.65 m)
Empty Wgt
1,510 lb
(685 kg)
MTOW
2,072 lb
(940 kg)
Wgt Diff
+562 lb
(+255 kg)
(Showcased structural values pertain to the base AEG D.I production variant)
Installed: 1 x Daimler D.IIIa 6-cylinder liquid-cooled inline piston engine developing 160 horsepower and driving a two-bladed propeller at the nose.
Max Speed
127 mph
(205 kph | 111 kts)
Ceiling
16,404 ft
(5,000 m | 3 mi)
Range
289 mi
(465 km | 861 nm)
Rate-of-Climb
1,313 ft/min
(400 m/min)


♦ MACH Regime (Sonic)
Sub
Trans
Super
Hyper
HiHyper
ReEntry
RANGES (MPH) Subsonic: <614mph | Transonic: 614-921 | Supersonic: 921-3836 | Hypersonic: 3836-7673 | Hi-Hypersonic: 7673-19180 | Reentry: >19030


(Showcased performance specifications pertain to the base AEG D.I production variant. Compare this aircraft entry against any other in our database. View aircraft by powerplant type)
2 x 7.92mm LMG 08/15 machine guns synchronized to fire through the spinning propeller blades.


Supported Types


Graphical image of an aircraft medium machine gun


(Not all ordnance types may be represented in the showcase above)
Hardpoint Mountings: 0


D.I - Base Series Designation; three prototypes completed.
Dr.I - Triplane variant of 1917 based on the D.I design.


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