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AEG D.I

Imperial Germany (1917)
Picture of AEG D.I Biplane Fighter Prototype Aircraft

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.


Detailing the development and operational history of the AEG D.I Biplane Fighter Prototype Aircraft.  Entry last updated on 5/15/2018. Authored by Staff Writer. Content ©www.MilitaryFactory.com

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.

Any available statistics for the AEG D.I Biplane Fighter Prototype 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).






Our Data Modules allow for quick visual reference when comparing a single entry against contemporary designs. Areas covered include general ratings, speed assessments, and relative ranges based on distances between major cities.

Image of collection of graph types

Relative Maximum Speed Rating
Hi: 150mph
Lo: 75mph
    This entry's maximum listed speed (127mph).

    Graph average of 112.5 miles-per-hour.
Relative Operational Ranges
NYC
 
  LON
LON
 
  PAR
PAR
 
  BER
BER
 
  MOS
MOS
 
  TOK
TOK
 
  SYD
SYD
 
  LAX
LAX
 
  NYC
Graph showcases the AEG D.I's operational range (on internal fuel) when compared to distances between major cities.
Aviation Era Impact
Pie graph section
Pie graph section
Pie graph section
Pie graph section
Pie graph section
Useful in showcasing the era cross-over of particular aircraft/aerospace designs.
Unit Production Comparison
Comm. Market HI*: 44,000 units
Military Market HI**: 36,183 units
3
3


  * Commercial Market High belongs to Cessna 172.

  ** Military Market High belongs to Ilyushin Il-2.


Altitude Visualization
Small airplane graphic
  Compare this entry against other aircraft using our Comparison Tool  
Supported Mission Types:
Air-to-Air
Interception
Unmanned
Ground Attack
Close-Air Support
Training
Anti-Submarine
Anti-Ship
Airborne Early Warning
MEDEVAC
Electronic Warfare
Maritime/Navy
Aerial Tanker
Utility/Transport
Passenger Industry
VIP Travel
Business Travel
Search/Rescue
Recon/Scouting
Special Forces
X-Plane/Development
National Flag Graphic
National Origin: Imperial Germany
Service Year: 1917
Classification Type: Biplane Fighter Prototype Aircraft
Manufacturer(s): Allgemeine Elektricitats-Gesellschaft AG (AEG) - Imperial Germany
Production Units: 3
Operational Status: Cancelled
Global Operators:
Imperial Germany (cancelled)
Structural - Crew, Dimensions, and Weights:
Unless otherwise noted the presented statistics below pertain to the AEG D.I model. Common measurements, and their respective conversions, are shown when possible.

Operational
CREW


Personnel
1


Dimension
LENGTH


Feet
20.01 ft


Meters
6.1 m


Dimension
WIDTH


Feet
27.89 ft


Meters
8.5 m


Dimension
HEIGHT


Feet
8.69 ft


Meters
2.65 m


Weight
EMPTY


Pounds
1,510 lb


Kilograms
685 kg


Weight
LOADED


Pounds
2,072 lb


Kilograms
940 kg

Installed Power - Standard Day Performance:
1 x Daimler D.IIIa 6-cylinder liquid-cooled inline piston engine developing 160 horsepower and driving a two-bladed propeller at the nose.

Performance
SPEED


Miles-per-Hour
127 mph


Kilometers-per-Hour
205 kph


Knots
111 kts


Performance
RANGE


Miles
289 mi


Kilometers
465 km


Nautical Miles
251 nm


Performance
CEILING


Feet
16,404 ft


Meters
5,000 m


Miles
3.11 mi


Performance
CLIMB RATE


Feet-per-Minute
1,313 ft/min


Meters-per-Minute
400 m/min

Armament - Hardpoints (0):

2 x 7.92mm LMG 08/15 machine guns synchronized to fire through the spinning propeller blades.
Visual Armory:

Graphical image of an aircraft medium machine gun
Variants: Series Model Variants
• D.I - Base Series Designation; three prototypes completed.
• Dr.I - Triplane variant of 1917 based on the D.I design.