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Knoller 70

Austria-Hungary (1918)
Picture of Knoller 70 Biplane Fighter Prototype

The Knoller Model 70 biplane fighter managed just two prototypes before the Austro-Hungarian surrender of November 1918.


Detailing the development and operational history of the Knoller 70 Biplane Fighter Prototype.  Entry last updated on 11/30/2016. Authored by Staff Writer. Content ©www.MilitaryFactory.com

The Austro-Hungarian Empire managed its own aero-industry apart from that of Germany's during World War 1 (1914-1918) and several homegrown designs emerged during the fighting. One of these offerings arrived from the work completed by Professor Richard Knoller - this becoming the Knoller "70". The single-seat, single-engine biplane debuted during 1917 and was tested into 1918. This led to an order for ten pre-series aircraft for additional evaluation but the Austro-Hungarian surrender ended any future the biplane fighter would have had.

The Knoller 70.01 was the first of two prototypes completed. Physical work began in 1917 by K.u.k. Fliegerarsenal Fischamend. The aircraft's general arrangement was traditional for the period as it sat its pilot in an open-air cockpit aft of the engine installation at the nose and under / behind the upper wing assembly. The wings were of a biplane arrangement, unstaggered and featuring single bays - one of the more interesting design elements of these members was an inherent ability to "flex" on-the-fly as the aircraft gained speed, thus reducing drag. Struts and cabling braced the members to the fuselage both under and above the aircraft. The fuselage was aerodynamically refined with a large spinner added to the nose and the empennage tapering smoothly. The tail itself was made up of a single vertical fin with mid-set horizontal planes. The undercarriage was of a tail-dragger arrangement, wheeled and fixed in place.

Dimensions of the aircraft included a wingspan of 26.2 feet, a length of 20.9 feet and a height of 9.4 feet.

Power was derived from a single Hiero 6-cylinder, water-cooled engine outputting 230 horsepower and driving a two-bladed propeller at the nose. As tested, the 70.01 was estimated to hold a maximum speed of 149 miles per hour.

Proposed armament was made up of 2 x 8mm Schwarzlose machine guns, these set over the nose and synchronized to fire through the spinning propeller blades.

Prototype 70.01, achieved a first-flight on November 23rd, 1917. However, a few days into its test phase it was damaged while on the ground. During the repair period, ailerons were installed at the upper wing members for improved controlling but more damage was suffered during a landing action in the spring of 1918. Prototype 70.02 was made available during September of 1918 but the end of the war in November of 1918 meant the end of the Knoller fighter project.

Any available statistics for the Knoller 70 Biplane Fighter Prototype 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 (149mph).

    Graph average of 112.5 miles-per-hour.
Aviation Era Impact
Pie graph section
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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
2
2


  * Commercial Market High belongs to Cessna 172.

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


  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: Austria-Hungary
Service Year: 1918
Classification Type: Biplane Fighter Prototype
Manufacturer(s): Knoller - Austria-Hungary
Production Units: 2
Global Operators:
Austria-Hungary
Structural - Crew, Dimensions, and Weights:
Unless otherwise noted the presented statistics below pertain to the Knoller 70.01 model. Common measurements, and their respective conversions, are shown when possible.

Operational
CREW


Personnel
1


Dimension
LENGTH


Feet
20.83 ft


Meters
6.35 m


Dimension
WIDTH


Feet
26.25 ft


Meters
8 m


Dimension
HEIGHT


Feet
9.35 ft


Meters
2.85 m

Installed Power - Standard Day Performance:
1 x Hiero 6-cylinder water-cooled engine developing 230 horsepower and driving a two-bladed propeller unit at the nose.

Performance
SPEED


Miles-per-Hour
149 mph


Kilometers-per-Hour
240 kph


Knots
130 kts

Armament - Hardpoints (0):

PROPOSED:
2 x 8mm Schwarzlose machine guns mounted over the nose and synchronized to fire through the spinning propeller blades.
Visual Armory:

Graphical image of an aircraft medium machine gun
Variants: Series Model Variants
• Model 70 - Base Series Name; two prototypes completed.
• 70.01 - First prototype
• 70.02 - Second prototype