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Daimler L11


Monoplane Fighter Prototype


Imperial Germany | 1919



"Like other Daimler fighter entries of World War 1, the L11 design existed as a sole prototype and only flown just before the Armistice."



Authored By: Staff Writer | Last Edited: 10/07/2020 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.
Diamler's work in the field of biplane fighters began in 1915 when the automotive concern, at the request of German authorities, set up an aircraft division to help built aero-engines and aeroplanes for the war effort. In 1917, the company utilized its core of engineers to develop the single-seat "L6" biplane fighter which was adopted into the German air ranks as the D.II but only six would be built before the end of the war in November 1918. Alongside this work came the "L8", a one-off twin-seat escort fighter prototype form that was to be fielded under the "CL.I" designation. The single-seat "L9" (D.II) followed as a more advanced form of the original L6 yet only realized as a single prototype. In April of 1918, aeronautics engineer Hanns Klemm joined the Daimler team and his design ideas largely influenced what became the "L11" of 1918.

Like the L6 and L9 models before it, the L11 was a single-seat, single-engine fighting aircraftusing the in-house Daimler D.IIIb V8 water-cooled engine of 185 horsepower. The chief difference of the L11 when compared to the earlier Daimler designs was its use of a parasol mainplane - a single mainplane member set over the fuselage supported through reinforced struts angled down to the fuselage sides. This quality provided excellent lift and opened up downward/all around views for the pilot when compared to biplanes of the period. Its mounting was well-ahead of midships and only slightly aft of the engine/propeller area. Additionally, the mainplane was given swiveling wing tips for added control.

Like the other Daimler entries, the L11 was aerodynamically refined by World War 1 standards, a large spinner added to the propeller's center and playing well against the rounded forward fuselage to reduce unnecessary drag at the forward section. The fuselage tapered elegantly towards the tail which seated a conventional single-finned triple pane arrangement. The rest of the fighter was traditional and included a twin-wheeled "tail dragger" undercarriage for ground-running and open-air cockpit for the single crewman.

While no armament was detailed, it is assumed that the L11 would have followed World War 1 standards by incorporating a twin-gunned arrangement over the nose, synchronized to fire through the spinning propeller blades.

A first-flight of the L11 prototype was recorded on November 8th, 1918 though the war ended would end quite soon through the Armistice of November 11th. Development of the L11 continued however, though now with less expediency, into the following year at which point the design was flight tested during February - showing good promise for an aircraft of this class. However, this sole, flyable prototype was all that was developed of the design as Daimler returned to its automotive roots in the post-war years due to post-war military restrictions set upon Germany by the victors.

The subsequent Daimler L14 was an attempt at converting the L11 into a twin-seat fighter but this design fell to aviation history as a single flyable example as well - essentially ending the line of Daimler-originated fighters of The Great War period - none proving a true success.

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Power & Performance
Those special qualities that separate one aircraft design from another. Performance specifications presented assume optimal operating conditions for the Daimler L11 Monoplane Fighter Prototype.
1 x Daimler D.IIIb V8 water-cooled engine developing 185 horsepower driving two-bladed wooden propeller at the nose.
Propulsion
124 mph
200 kph | 108 kts
Max Speed
27,559 ft
8,400 m | 5 miles
Service Ceiling
289 miles
465 km | 251 nm
Operational Range
1,020 ft/min
311 m/min
Rate-of-Climb
City-to-City Ranges
Operational range when compared to distances between major cities (in KM).
NYC
 
  LON
LON
 
  PAR
PAR
 
  BER
BER
 
  MOS
MOS
 
  TOK
TOK
 
  SYD
SYD
 
  LAX
LAX
 
  NYC
Structure
The nose-to-tail, wingtip-to-wingtip physical qualities of the Daimler L11 Monoplane Fighter Prototype.
1
(MANNED)
Crew
26.7 ft
8.15 m
O/A Length
39.4 ft
(12.00 m)
O/A Width
8.5 ft
(2.60 m)
O/A Height
1,146 lb
(520 kg)
Empty Weight
2,646 lb
(1,200 kg)
MTOW
Design Balance
The three qualities reflected below are altitude, speed, and range. The more full the box, the more balanced the design.
RANGE
ALT
SPEED
Armament
Available supported armament and special-mission equipment featured in the design of the Daimler L11 Monoplane Fighter Prototype .
ASSUMED:
2 x 7.92mm LMG 08/15 air-cooled machine guns over the nose synchronized to fire through the spinning propeller blades.
Variants
Notable series variants as part of the Daimler L11 family line.
L11 - Base Series Designation; single flyable example completed and flown before the end of the war.
Operators
Global customers who have evaluated and/or operated the Daimler L11. Nations are displayed by flag, each linked to their respective national aircraft listing.

Total Production: 1 Units

Contractor(s): Daimler-Motoren-Gesellschaft (Daimler) - German Empire
National flag of the German Empire

[ German Empire ]
Relative Max Speed
Hi: 150mph
Lo: 75mph
Aircraft Max Listed Speed (124mph).

Graph Average of 113 MPH.
Era Crossover
Pie graph section
Pie graph section
Showcasing Aircraft Era Crossover (if any)
Max Alt Visualization
Small airplane graphic
Production Comparison
1
36183
44000
Entry compared against Ilyushin IL-2 (military) and Cessna 172 (civilian) total production.
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
Aviation Timeline
EarlyYrs
WWI
Interwar
WWII
ColdWar
Postwar
Modern
Future
1 / 1
Image of the Daimler L11
Image from the archives of the San Diego Air and Space Museum.

Mission Roles
Some designs are single-minded in their approach while others offer a more versatile solution to airborne requirements.
AIR-TO-AIR COMBAT
X-PLANE
Recognition
Some designs stand the test of time while others are doomed to never advance beyond the drawing board; let history be their judge.
Going Further...
The Daimler L11 Monoplane Fighter Prototype appears in the following collections:
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