The purpose of this site is to highlight the major design, engineering and materials science breakthroughs that gave each iconic World War II warbird its unique flight characteristics. We hope you enjoy!!
The Messerschmitt Bf 109 E7 commenced its operational service in August of 1940, during the Battle of Britain. It had excellent armament, good dive characteristics and manoeuvrability but engine management was complex because early models required manual prop pitch control during dynamic combat manoeuvring. Pilots had to understand the following flight characteristics to effectively operate this iconic aircraft in a combat environment:
Engine: Initial models of the Bf 109 E7 were powered by a liquid-cooled, 33 litre, inverted V12 engine, the Daimler-Benz DB 601A. Later models were powered by the DB 601N, which had improved high altitude performance. Whilst the DB 601A was able to produce 1,020 HP at 14,700 feet (4,500m) on 87 octane 'B4' fuel, the DB 601N could produce 1,175 HP at 16,000 feet (4,900m) using 100 octane 'C3' fuel.
Engine Management: The E7’s supercharger was hydraulically driven and did not need to be throttled back to avoid overboost at low altitudes. RPM and boost combinations were set based on pre-defined tables for take-off, cruise or combat power. Propeller pitch was adjusted and refined with the aid of electronic actuators. In level flight this process worked well, however, during combat the pilot was required to alter the pitch of the propeller to match the changing stresses of dynamic combat manoeuvres on the engine. At some stage during the evolution of the E-series, automatic prop pitch control was developed and many E-series planes were retro-fitted. Modern simulations of E-series Bf 109s have automatic prop pitch control, making combat flying much easier.
Armament:The primary armament consisted of two 7.92 millimetre MG 17 machine guns mounted in the engine cowling and two 20mm MG FFM cannons mounted in the wings. The M-designation referred to the use of Mine-shells: High-explosive rounds with a thin shell casing to allow for a larger explosive charge. Mine-shells were especially damaging to softer targets such as airframes, fuel tanks and crew.
Speed: Maximum level air speed was 350 miles per hour (564 kilometers per hour) at 16,400 feet (5,000 m), which was slightly faster than the Hurricane Mk II but slower than the Spitfire Mk I.
Maneuverability: On paper, the Bf 109 could not turn as rapidly as its contemporaries but it excelled at vertical maneuvers such as boom and zoom: Dive on an opponent, fire a burst of shots, and then zoom climb back up to regain altitude and energy. This tactic allowed the pilot to control the fight and avoid getting caught in prolonged turning battles.
Climb: The Bf 109 E7 had a streamlined and clean airframe, was relatively lightweight, had high aspect ratio wings and an efficient propeller optimized for climbing. Combined with a powerful engine, the Bf 109 E7 was exceptional at translating high speeds into altitude during short rapid climbs. At 10,000 feet (3,000m) its climb rate was 13.5 m/s (2,657 feet per minute), which was slightly better than a Spitfire Mk I and equal to a Hurricane Mk II.
Dive: The Bf 109 E7 demonstrated exceptional diving capabilities. When nose-down, it accelerated swiftly, enabling it to close the gap on targets during the early stages of a pursuit dive and to swiftly extricate itself from undesirable situations. It boasted a maximum rated dive speed limit of 528 miles per hour (850 kilometers per hour). Its stability at high speeds rendered it highly effective for executing hit-and-run attacks against enemy aircraft.
In closing: Piloting the Messerschmitt Bf 109 E7 was a demanding task that required a unique set of skills and knowledge. Climbing proficiency, energy management, speed control, gun accuracy, tactical maneuvering, situational awareness, survival instincts, and adaptability were all crucial factors in achieving success as a pilot of this iconic World War II fighter. Skilled pilots who knew their airplane’s performance envelope were always more formidable adversaries.