Imperial Germany (1918)
Only ten of the late-war Dr.I triplanes were produced by the Pfalz concern - the type found to be rather unreliable for the intended fighting role.
Detailing the development and operational history of the Pfalz Dr.I Triplane Fighter Aircraft. Entry last updated on 11/19/2016. Authored by Staff Writer. Content ©www.MilitaryFactory.com
The aircraft was given a typical tri-winged arrangement which retained the upper and lower wing sections of a conventional biplane but added a third element sandwiched between the two existing planes. The wings were all braced by a thick strut arrangement which created single bays to each side of the fuselage. The fuselage was well-rounded and therefore quite streamlined with the engine encased in metal at the nose and driving a two-bladed propeller unit. Machine guns (2 x 7.92mm LMG 08/15) were fitted over the nose and synchronized to fire through the spinning blades with the pilot's open-air cockpit just aft of the guns (and under / behind) the upper-most wing element. The tail unit incorporated the usual single tail fin (rounded) and low-set horizontal planes. The undercarriage was of a tail-dragger arrangement with the main legs wheeled and fixed in flight. A tailskid brought up the rear.
Dimensions included a length of 5.5 meters, a wingspan of 8.5 meters and a height of 2.7 meters. Empty weight was 1,125lb against a MTOW of 1,555lb. Power was had from a Siemens-Halske Sh.III 11-cylinder, geared rotary engine of 160 horsepower which could propel the aircraft to speeds of 118 miles per hour up to a ceiling of 19,680 feet. Flight time was about 1.5 hours.
On looks alone the aircraft should have been a proper contender to claim air supremacy from Allied offerings of the day but the choice of engine fit made for an unreliable product in the end. Formal evaluations of the aircraft noted its lack of speed in addition to the temperamental engine and this led to a small batch of just ten aircraft being procured and fielded during 1918. The war was over with the November Armistice and this Pfalz triplane attempt subsequently fell to aviation history.
Any available statistics for the Pfalz Dr.I Triplane Fighter 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.
Relative Maximum Speed Rating
This entry's maximum listed speed (118mph).
Graph average of 90 miles-per-hour.
Relative Operational Ranges
Graph showcases the Pfalz Dr.I's operational range (on internal fuel) when compared to distances between major cities.