Aviatik-Berg C.I

Aviatik-Berg (Lohner) C.I - 1917
Aviatik-Berg (Lohner) C.I Ba 214 - 1917
Aviatik-Berg C.I (Lohner) - 1917
Aviatik-Berg (Lohner) C.I Ba 114 - 1917

In early 1917 the chief designer of this company, Julius von Berg designed the original multi-purpose airplane Aviatik-Berg CI. The C.I or "double Berg" was based on the D.I fighter. It used the same wings with a thin flexible profile, which varied depending on the speed of flight. Power was provided by either a 185 hp (138 kW) or 200 hp (149 kW) Austro-Daimler 6-cylinder water cooled in-line engine.
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Aviatik-Berg C.I
  • Type: Reconnaissance aircraft
  • National Origin: Austria-Hungary
  • Manufacturer: Österreichische-Ungarische Flugzeugfabrik
  • First Flight: 1917
  • Primary User: KuKLFT
  • Number Built: Over 500
  • Power Plant:
    • Series 37, 47, 83, 91 and 114: 1× Austro-Daimler 6-cylinder water cooled in-line, 185 hp (138 kW)
    • Series 137, 183 and 214: 1× Austro-Daimler 6-cylinder water-cooled in-line, 200 hp (149 kW)
  • Wingspan: 28 ft 7 in (8.40 m)
  • Length: 25 ft 11 in (7.60 m)
  • Empty Weight: 1433 lb (650 kg)
  • Take-off Weight: 1907 lb (865 kg)
  • Maximum Speed: 115 mph (185 km/h)
  • Cruising Speed: 107 mph (172 km/h)
  • Ceiling: 6400 m 21000 ft
  • Time to Climb: m / min: 1000 / 3.5
  • Crew: 2
  • Armament: 1-2 × 0.315 in (8 mm) Schwarzlose machine gun

References

  1. Aviatik (Berg) C.I 1917 The Virtual Aircraft Museum http://www.aviastar.org/air/austria/aviatik_c-1.php
  2. Aviatik (Berg) C I Their Flying Machines http://flyingmachines.ru/Site2/Crafts/Craft25598.htm
  3. Green, William. Great Book of Fighters: An Illustrated Encyclopedia of Every Fighter Aircraft Built and Flown Zenith Press (November 14, 2001) ISBN-10: 0760311943, ISBN-13: 978-0760311943
  4. Cowin, Hugh. German and Austrian Aviation of World War I: A Pictorial Chronicle of the Airmen and Aircraft that Forged German Airpower (Osprey Aviation Pioneers 3). Osprey 2000 ISBN 10: 1841760692 / 1-84176-069-2 ISBN 13: 9781841760698

Aviatik (Berg) D-I

Aviatik-Berg (Aviatik) D-I Ba 38- 1918
Aviatik-Berg (Aviatik) D-I Ba 38- 1917
Aviatik-Berg (Aviatik) D-I Ba 138 - 1918
Aviatik-Berg (Aviatik) D-I Ba 138 - 1918
Aviatik-Berg (Aviatik) D-I Ba. 338 - 1918
Aviatik-Berg (Aviatik) D-I Ba. 338 - 1918

The Aviatik D.I, was a single-engine, single-seater fighter biplane. The Aviatik D.I represented the first wholly Austro-Hungarian designed fighter in the Austro-Hungarian Air Service (Luftfährtruppen). It was also known as the Berg D.I or the Berg Fighter after its designer, Julius von Berg.

The D.I was a good combat aircraft. It was reasonably fast, had excellent flying characteristics and maneuverability, and could reach higher altitudes than most of its adversaries. In addition, it was provided with a roomy and comfortable cockpit which gave a good field of view.

Despite those desirable features, the new Aviatik fighter wasn't greeted with enthusiasm when it entered service in autumn 1917, as the type also had some serious defects which didn't endear it to its pilots. The early aircraft had structural deficiencies and their machine guns were installed beyond the reach of the pilot; if the gun(s) jammed, there was nothing he could do about it. These problems were later rectified with the strengthening of the airframe and the repositioning of the guns, but the main cause of complaints was the engine's tendency to overheat far too easily. To alleviate the cooling problems, operational units tended to fly their aircraft without the engine's top panels and sometimes also the side panels were left off.

The Aviatik D.I was manufactured under license by a numbers of subcontractors.

  • Austrian Aviatik built the 38, 138, 238 and 338 Series
  • Lohner built the 115 and 315 Series
  • Lloyd manufactured the 48, 248 and 348 Series.
  • MAG (Magyar Általános Gépgyár - General Hungarian Machine Works) built the 84 and 92 Series
  • Thöne und Fiala manufactured the 101 Series
  • WKF (Wiener Karosserie Fabrik - Vienna (Car)Body Factory built the 184, 284 and 384 Series.

Ordered but not build were the 215 and 201 Series from Lohner and ThÖne und Fiala respectively.

Aviatik (Berg) D-I
  • Type: Fighter
  • National Origin: Austria-Hungary
  • Manufacturer: Österreichische-Ungarische Flugzeugfabrik
  • Designed by: Julius von Berg
  • Initial Design: August 1916
  • First Prototype Flight: October 16, 1916
  • First Production Flight: January 24, 1917
  • Entered Service: 1917
  • Primary User: KuKLFT
  • Produced: 1917 - 1918
  • Number Built: aprox. 700
  • Length: 22 ft 6 in (6.86 m)
  • Wingspan: 26 ft 3 in (8.00 m)
  • Height: 8 ft 2 in (2.48 m)
  • Wing Area: (21.80 m²)
  • Empty Weight: 1,345 lb (610 kg)
  • Loaded Weight: 1,878 lb (852 kg)
  • Powerplant: 1× Austro-Daimler water-cooled in-line, 200 hp (149 kW)
  • Maximum Speed: 115 mph (185 km/h) at sea level
  • Range: 2 hours 30 minutes (of flying time)
  • Service ceiling: (6150 m)
  • Crew: 1
  • Armament: 2 × Synchronised fixed forward-firing 0.315 in (8 mm) Schwarzlose machine guns

Work on the prototype began in August 1916, the first flight of the Aviatik D.I prototype, 30.14, took place on October 16, 1916 at Aspern, killing the test pilot.

Further modifications were made, and three more prototypes of the Aviatik D.I were manufactured, labeled 30.19 (for tests on the ground), 30.20 (for tests in flight) and 30.21 (as a reserve airframe). These prototypes differed from the production aircraft in having a single unsynchronized Schwarzlose machine gun above the top wing, firing over the propeller.

Tests of the modified aircraft were positive and the first unit to receive the first serial batch (with two synchronized Schwarzloses, one on each side of the cylinder block) of the Aviatik D.I was Fluggeschwader I (FLG I, later to be renamed to Flik 101G) on the Divac(a airfield in Slovenia.

The Austro-Hungarian aviation units used the D.I widely until the end of World War I on Eastern, Italian and Balkan fronts, mainly as an escort fighter for the 2-seater reconnaissance aircraft, as the most fighter units preferred the Albatros D.III in air superiority role.

The D.II was a version of the D.I with a cantilever lower wing. The model went into production in late 1918 in two Series (39 and 339), but the production aircraft were too late for operational service. The D.III high-altitude version with a 230 hp Hiero engine and the Dr.I triplane development remained as prototypes only.

The main differences between the Series were in the power of Austro-Daimler engines used (185 hp in the early production aircraft, 200 or 210 hp in the mid-production, and 225 hp in the last ones), in exact positioning of the machine guns, and in structural and radiator modifications.

Until the 31st October 1918 a number of 677 Aviatik D.I airframes of all batches were handed over to the Austro-Hungarian Air Force.

References

  1. Aviatik D.I. (2011, April 26). In Wikipedia, The Free Encyclopedia. Retrieved 07:37, September 3, 2011, from http://en.wikipedia.org/w/index.php?title=Aviatik_D.I&oldid=425950351
  2. Aviatik Berg D.I photos from the Vienna technical Museum http://www.idflieg.com/aviatik-berg-di.htm</li>
  3. "The Aerodrome" page regarding the Aviatik D.I http://www.theaerodrome.com/aircraft/austrhun/aviatik_di.html
  4. Holmes, Tony (2005). Jane's Vintage Aircraft Recognition Guide. London: Harper Collins. ISBN 0 0071 9292 4.
  5. Munson, Kenneth - Fighters, Attack and Training Aircraft 1914-19 ISBN 0-7537-0916-3

Aviatik (Berg) D.II

Aviatik (Berg) D.II
Aviatik (Berg) Ba.39 D.II
Aviatik (Berg) D.II
Aviatik (Berg) Ba.39 D.II

The Aviatik (Berg) D.II, also known as the Aviatik 30.22, was an Austro-Hungarian fighter prototype towards the end of the First World War.

The D.II's fuselage was virtually identical to that of the D.I. It was characterised, however, by its short-span cantilever lower wing. Through 1917, 19 D.IIs were built for front-line evaluation. They were either powered by the 200 hp Series 39 engine or the 225 hp Series 339 engine, both made by Austro-Daimler. The propeller was a four-bladed Jaray, and armament consisted of the usual paired 8 mm Schwarzlose machine guns.

Aviatik D.II
  • Type: Fighter
  • National Origin: Austria-Hungary
  • Manufacturer: Österreichische-Ungarische Flugzeugfabrik
  • Primary User: KuKLFT
  • First Flight: summer 1917
  • Number Built: 19
  • Developed From: Aviatik D.I
  • Powerplant: 1 × Austro-Daimler Series 39, 200 hp (149 kW)
  • Wingspan: 24 ft 7.25 in (9.50 m)
  • Length: 22 ft 10.75 in (6.98m)
  • Empty Weight: 1294 lb (587 kg)
  • Gross Weight: 1786 lb (810 kg)
  • Maximum Speed: 130 mph (210 km/h)
  • Crew: 1
  • Armament:2 × Synchronised fixed forward-firing 0.315 in (8 mm) Schwarzlose machine guns

The first three series aircraft were tested in November 1917, and seven were evaluated at the front later in that year, showing good promise. but the decision that O-UF Aviatik should licence-manufacture the Fokker D.VII terminated any plans to build the D.II in quantity. One D.II airframe was experimentally fitted with a 200hp Hiero engine as the Aviatik 30.38, and participated in the July 1918 D-Contest. With the 225hp Austro-Daimler engine the D.II attained 220km/h.

References

  1. Aviatik (Berg) D.II. (2010, May 13). In Wikipedia, The Free Encyclopedia. Retrieved 03:19, July 2, 2010, from http://en.wikipedia.org/w/index.php?title=Aviatik_(Berg)_D.II&oldid=361799043
  2. Virtual Aircraft Museum Aviatik (Berg) D.II "http://www.aviastar.org/air/austria/aviatik_d-2.php"
  3. Green, William; Gordon Swanborough. "The Complete Book of Fighters". Godalming, UK: Salamander Books. pp. 44.

Aviatik (Berg) Dr.I 30.24

Aviatik (Berg) D.IIAviatik-Berg (Aviatik) Dr.I sn-30.24
Aviatik-Berg (Aviatik) Dr.I sn-30.24

The Aviatik 30.24 (this designation indicating that it was the 24th experimental aircraft produced by O-UF Aviatik) single-seat fighter triplane designed by von Berg in May 1917. The Aviatik 30.24 employed a similar structure to that of the D.I and the fuselage was very similar. Based on a contract with Aviatik for four experimental fighter planes powered by 185/200 hp Daimler engines in Sept 1917.

Flight testing of 30.24 on Oct 1917, the 185 hp powered 30.24 had inferior performance compared with a similar engined Aviatik D.I. The 200 hp Daimler also shows little improvement. The Triplane was referred to FLEK (FLiegerErsatzKompanie) 6 in Wiener Neustadt, where a variety of experimental radiators were installed to improve the pilots forward view on Aviatik fighters. 30.24 was accepted by LFT inspectors in Sep 1918. The remaining three prototypes (designations unknown), completed but disassembled, were accepted at the end of Oct 1918. The 30.24 was offered for sale to the Czechoslovakian government in April 1920.

Aviatik (Berg) Dr.I 30.24
  • Role: Experimental Triplane Fighter
  • National Origin: Austria-Hungary
  • Manufacturer: Österreichische-Ungarische Flugzeugfabrik
  • Designed by: Julius von Berg
  • Contract Accepted: September 1917
  • First Flight: October 1917
  • Testing Unit: Flek 6
  • Number Built: 4
  • Status: Prototype only
  • Power Plant: 1 × Austro-Daimler, 200 hp (149 kW) 6 cylinder liquid cooled inline engine
  • Wingspan: 7.22 m 24 ft 8 in
  • Wing area: 242.19 ft² (22.50 m²)
  • Length: 23 ft 6 in (6.86 m)
  • Height: 9 ft 0 in (2.75 m)
  • Take-off Weight: 1900 lb (862 kg)
  • Empty Weight: 1367 lb (620 kg)
  • Maximum Speed: 108 mph (174 km/h)
  • Crew: 1
  • Armament: 2 × Synchronised fixed forward-firing 0.315 in (8 mm) Schwarzlose machine guns

References

  1. Aviatik (Berg) 30.24 The Virtual Aircraft Museum retrieved from http://www.aviastar.org/air/austria/aviatik_30-24.php

Aviatik (Berg) 30.27 & 30.29

Aviatik-Berg 30.27- 1918
Aviatik-Berg 30.27- 1918

When the Aviatik-Berg type 30.27 and 30.29 appeared early in 1918 it marked a radical change in design philosophy for Julius von Berg. The design was a lighter weight aircraft with a compact profile featuring a rounded cowling and forward fuselage. Although it was not successful it pointed toward more the form which would lead to future designs.

The design of both types was wooden construction with plywood fuselage skinning. The forward section of the aircraft was covered by light metal panels, and fabric-covered wings rounded out the design. Both the Aviatik 30.27 and 30.29 were fitted with the standard Austrian armament of twin synchronized fixed forward-firing 0.315 in (8 mm) Schwarzlose machine guns.
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Aviatik 30.27
  • Role: Experimental Light Fighter
  • National Origin: Austria-Hungary
  • Manufacturer: Österreichische-Ungarische Flugzeugfabrik
  • Designed by: Julius von Berg
  • First Flight: 1918
  • Number Built: 1
  • Status: Prototype only
  • Power Plant: 1 × Steyr Le Rhone 11 cylinder air cooled rotary engine 160 hp (119 kW)
  • Wingspan: 22 ft 5 in (6.82 m)
  • Length: 16 ft 5 in (5.00 m)
  • Height: 9 ft 7 in (2.61 m)
  • Empty Weight: 851 lb (386 kg)
  • Take-off Weight: 1336 lb (606 kg)
  • Maximum Speed: 115 mph (185 km/h)
  • Crew: 1
  • Armament: 2 × Synchronised fixed forward-firing 0.315 in (8 mm) Schwarzlose machine guns

References

  1. Aviatik (Berg) 30.27 & 30.29 1918 The Virtual Aircraft Museum Retreived Sept 3. 08:55 from http://www.aviastar.org/air/austria/aviatik_30-27.php

Aviatik (Berg) 30.40

Aviatik-Berg 30.40- 1918
Aviatik-Berg 30.40 - 1918

Österreichische-Ungarische Flugzeugfabrik designer Julius von Berg was working on a new lighter type of Aviatik fighter departing from their previous reliance on the heavier Austro-Daimler inline engine. The first attempt was the unsuccessful type 30.27 and 30.29 biplanes. The Aviatik-Berg 30.40 was a parasol monoplane derivative of the Aviatik 30.27. In fact many of the components came from the surviving 30.27 airframes. The prototype was built and flown during the summer of 1918. Only one example of the aircraft was built.

The Aviatik 30.40 was was a fairly standard wooden construction. The forward fuselage was covered by light metal panels and the remainder of the fuselage was skinned with plywood. The wing had fabric skinning, and steel-tube bracing struts were employed. The power for the Aviatik 30.40 was provided by a similar 160hp Steyr Le Rhone 11-cylinder rotary engine. Armament would have consisted of the standard twin synchronized fixed forward-firing 0.315 in (8 mm) Schwarzlose machine guns

Aviatik (Berg) 30.40
  • Type:Experimental Monoplane Fighter
  • National Origin: Austria-Hungary
  • Manufacturer: Österreichische-Ungarische Flugzeugfabrik
  • First Flight: 1918
  • Number Built: 1
  • Status: Prototype only
  • Power Plant: 1 × Steyr Le Rhone 11 cylinder air cooled rotary engine 160 hp (119 kW)
  • Wing Span: 23.95 ft (7.3 m)
  • Wing Area: 113 ft² (10.5 m²)
  • Length: 17.55 ft (5.35 m)
  • Empty Weight: 807 lb (366 kg)
  • Loaded Weight: 1292 lb (586 kg)
  • Maximum Speed: 119 mph (192 km/hr)
  • Climb:
    • 3,265 ft (1000 m) 1.5 min
    • 6,560 ft (2000 m) 2.83 min
    • 9,840 ft (3000 m) 6.83 min
    • 13,120 ft (4000 m)10 min
    • 16,325 ft (5000 m) 16.83 min
    • 19680 ft (6000 m) 22 min
  • Crew: 1
  • Proposed Armament: 2 × Synchronised fixed forward-firing 0.315 in (8 mm) Schwarzlose machine guns

References

  1. Aviatik (Berg) 30.40 1918 Retreived Sept 3. 08:45 from http://flyingmachines.ru/Site2/Crafts/Craft25508.htm
  2. Aviatik (Berg) 30.40 1918 Virtual Aircraft Museum Retreived Sept 3. 09:05 from http://www.aviastar.org/air/austria/aviatik_30-40.php
  3. Aviatik Berg Scout The Aerodrome Forum Retreived Sept 3. 09:15 from http://www.theaerodrome.com/forum/aircraft/1997-aviatik-berg-scout.html
  4. Grosz,Peter M. Haddow, George. Schiemer, Peter. Austro-Hungarian Army Aircraft of World War One p.156-157. Flying Machines Press, 1993. ISBN 0963711008,