DFW Mars

The DFW Mars was an early German military utility aircraft built in 1913 and was the first original design manufactured by DFW. The aircraft was produced in both monoplane and biplane versions, which shared a common fuselage and empennage. The monoplane version featured wings that were wire-braced to a kingpost on the forward fuselage, and was powered by a 71 kW (90 hp) NAG engine. Examples of the monoplane built as dedicated trainer aircraft also incorporated a reinforcing truss beneath the wings. The biplane had conventional three-bay wings of unequal span and was powered by a 75 kW (100 hp) Mercedes engine. The wings of both the monoplane and biplane versions featured prominent sweepback.

Mars aircraft distinguished themselves in pre-war passenger-carrying feats and reliability trials, and were purchased by both the German military and the British Admiralty, which purchased an example for the RNAS. Turkish Mars aircraft were flown in the First and Second Balkan Wars in 1912-1913 and the type is therefore believed to be the first German-built aircraft to have seen active military service.

Specifications (biplane)

General characteristics

• Crew: Two, pilot and observer or instructor
• Length: 9.75 m (32 ft 0 in)
• Wingspan: 17.07 m (56 ft 0 in)
• Wing area: 48.3 m² (520 ft²)
• Empty weight: 660 kg (1,460 lb)
• Powerplant: 1 × Mercedes D.I 6-cylinder in-line water-cooled piston engine, 75 kW (100 hp)

Performance

• Maximum speed: 110 km/h (68 mph)
• Rate of climb: 1.5 m/s (300 ft/min)

References

Wikimedia Commons has media related to DFW aircraft.

• Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. p. 325. 
• World Aircraft Information Files. London: Bright Star Publishing. pp. File 892 Sheet 25. 
• Jane's All the World's Aircraft 1919. London: Sampson Low. 
• "The D.F.W. Monoplane" Flight 8 November 1913, pp 1216–18
• "The D.F.W. Biplane at Brooklands" Flight 13 December 1913, 1374
• "The D.F.W. Biplane" Flight 10 January 1914, pp 34–38