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The Dornier Do 17 was initially conceived primarily as a heavy bomber, intended for long-range strategic missions.
Answer: False
Explanation: The Dornier Do 17 was initially designed as a "Schnellbomber," a fast bomber, with the strategic advantage of speed to outmaneuver opposing fighters, rather than as a heavy bomber.
The Dornier Do 17 acquired the nicknames 'flying pencil' and 'Eversharp' owing to its robust defensive armament.
Answer: False
Explanation: The nicknames 'flying pencil' and 'Eversharp' were attributed to the Dornier Do 17 due to its distinctively sleek, narrow, and continuous fuselage design, not its armament.
The initial 1932 specification that initiated the development of the Dornier Do 17 was for a heavy fighter aircraft.
Answer: False
Explanation: The initial 1932 specification that led to the Do 17's development was for a high-speed mail plane and freight aircraft, not a heavy fighter.
The inaugural Dornier Do 17 prototype (V1) incorporated a twin tail configuration designed to enhance stability.
Answer: False
Explanation: The first prototype (V1) featured a single vertical stabilizer. Stability issues identified during testing led to the modification of subsequent prototypes with a twin tail configuration.
The maiden flight of the initial Dornier Do 17 prototype took place in late 1932.
Answer: False
Explanation: The maiden flight of the first Dornier Do 17 prototype (V1) occurred on November 23, 1934, not in 1932.
Lufthansa readily incorporated the Dornier Do 17 prototypes into its passenger service fleet.
Answer: False
Explanation: It is suggested that Lufthansa rejected the Do 17 prototypes due to the cabin being too cramped for passenger comfort and the operating costs being deemed too high for a mail plane.
The Dornier Do 17R-0 prototypes were developed specifically to evaluate the performance characteristics of Bramo radial engines.
Answer: False
Explanation: The Do 17R-0 prototypes were developed to test Daimler-Benz DB 600 G and DB 601 Aa engines for a long-range reconnaissance role, not Bramo radial engines.
What was the principal intended role of the Dornier Do 17 during its initial design phase?
Answer: A fast bomber ('Schnellbomber')
Explanation: The Dornier Do 17 was initially designed as a 'Schnellbomber,' meaning a fast bomber, intended to leverage speed as its primary defensive asset.
For what reason was the Dornier Do 17 commonly bestowed with the moniker 'flying pencil'?
Answer: Its sleek, narrow, and continuous fuselage design.
Explanation: The Dornier Do 17 earned the nicknames 'flying pencil' and 'Eversharp' due to its characteristic slender, elongated, and continuous fuselage shape.
The initial German specification issued in 1932, which catalyzed the development of the Dornier Do 17, was for what category of aircraft?
Answer: A high-speed mail plane and freight aircraft
Explanation: The 1932 specification from the German Ordnance Department called for a 'freight aircraft for German State Railways' and a 'high speed mail plane for Lufthansa,' which Dornier adapted for its Do 17 project.
The distinctive wing root design of the Dornier Do 17, characterized by its integration with the fuselage and sharp backward declination, significantly influenced the design of which subsequent Dornier bomber?
Answer: Dornier Do 217
Explanation: The unique wing root design of the Do 17, where the wing merged with the fuselage and declined sharply backward, served as an influential design element for the subsequent Dornier Do 217 bomber.
The Dornier Do 17's operational history was exclusively limited to service as a light bomber.
Answer: False
Explanation: The Dornier Do 17 served in multiple capacities throughout its service life, including as a light bomber, a reconnaissance aircraft, and subsequently adapted for night fighter operations.
Following the decline of its front-line bomber role, the Dornier Do 17 was entirely retired from active service.
Answer: False
Explanation: After its front-line bomber role diminished, the Dornier Do 17 continued to serve in various secondary capacities, including as a glider tug, a reconnaissance platform, and a trainer aircraft.
The modification featuring an extended under-nose 'Bodenlafette' or 'Bola' was implemented with the objective of enhancing the Dornier Do 17's aerodynamic efficiency.
Answer: False
Explanation: The 'Bodenlafette' or 'Bola' modification, an extended under-nose gondola, was primarily implemented to house ventral defensive armament, not to improve aerodynamic efficiency.
The Do 17M-1 variant possessed a maximum bomb load capacity equivalent to 2,200 pounds (1,000 kilograms).
Answer: True
Explanation: The Do 17M-1 variant was capable of carrying a maximum bomb load of 1,000 kg (approximately 2,200 lb).
The Dornier Do 17P variant was primarily developed for service as a heavy night fighter.
Answer: False
Explanation: The Do 17P variant was primarily developed and utilized as a reconnaissance aircraft, equipped with specialized cameras and blind-flying instruments.
The Dornier Do 17Z series incorporated a redesigned forward fuselage, featuring a 'dropped' cockpit configuration to enhance visibility and defensive emplacements.
Answer: True
Explanation: The Do 17Z series indeed featured a significantly redesigned forward fuselage with a 'dropped' cockpit, improving crew visibility and providing better positions for defensive armament.
The Dornier Do 17Z-4 variant was specifically outfitted for anti-shipping operations, including the integration of flotation aids.
Answer: False
Explanation: The Do 17Z-5 variant was the one specifically equipped for anti-shipping missions with flotation aids. The Z-4 was designed as a trainer.
The Dornier Do 17Z-2 variant integrated an upgraded Bramo 323P-1 engine, meticulously tuned to optimize low-level performance.
Answer: True
Explanation: The Do 17Z-2 variant featured an upgraded Bramo 323P-1 engine, which was tuned to enhance low-level performance, thereby allowing for an increased bomb load.
The Dornier Do 17 Kauz variants underwent conversion into daylight reconnaissance aircraft.
Answer: False
Explanation: The Do 17 Kauz variants (Kauz I and II) were conversions specifically for night fighter operations, not daylight reconnaissance.
The Dornier Do 17Z-8 'Geier' variant achieved successful production and was extensively deployed in ground attack capacities.
Answer: False
Explanation: The Do 17Z-8 'Geier' was intended for ground attack but was not produced due to concerns regarding its performance and lack of adequate armor, making it unsuitable for extensive deployment.
The Dornier Do 17Z-10 Kauz II variant underwent testing with the FuG 202 Lichtenstein radar system for nocturnal combat operations.
Answer: True
Explanation: A Do 17Z-10 Kauz II variant was indeed tested with the FuG 202 Lichtenstein B/C radar system as part of its development for night fighter capabilities.
Beyond its roles in bombing and reconnaissance, what other notable function did the Dornier Do 17 serve during the concluding years of World War II?
Answer: Glider tug
Explanation: In its later service life, after its primary bomber role diminished, the Do 17 was adapted and utilized as a glider tug, among other secondary functions.
Following combat experiences during the Spanish Civil War, what significant modification was implemented in the Dornier Do 17's cockpit area?
Answer: An under-nose gondola ('Bodenlafette') was added for ventral armament.
Explanation: Post-Spanish Civil War modifications included raising the cockpit roof and extending the lower crew compartment into an under-nose gondola ('Bodenlafette' or 'Bola') for ventral defensive armament.
What was the maximum bomb load capacity attributed to the Dornier Do 17M-1 variant?
Answer: 1,000 kg (2,200 lb)
Explanation: The Do 17M-1 variant was capable of carrying a maximum bomb load of 1,000 kilograms (approximately 2,200 pounds).
For what primary role was the Dornier Do 17P variant specifically developed?
Answer: Long-range reconnaissance
Explanation: The Do 17P variant was primarily developed for long-range reconnaissance missions, equipped with enhanced camera and blind-flying equipment.
The Dornier Do 17Z series incorporated a distinctive modification to its forward fuselage, designated the 'Kampfkopf'. This modification primarily:
Answer: Provided a 'dropped' cockpit for better visibility and defensive positions.
Explanation: The 'Kampfkopf' modification in the Do 17Z series involved a 'dropped' cockpit design, enhancing crew visibility and improving the positioning of defensive armament.
Which specific variant of the Dornier Do 17 was designed with the primary purpose of serving as a trainer aircraft?
Answer: Do 17Z-4
Explanation: The Do 17Z-4 variant was specifically developed and equipped with dual controls to function as a trainer aircraft.
What was the designated purpose of the Dornier Do 17Z-5 variant?
Answer: Anti-shipping operations with flotation aids
Explanation: The Do 17Z-5 variant was specifically designed for anti-shipping roles and incorporated flotation cells to enhance survivability in case of water landings.
The Dornier Do 17Z-2 variant was equipped with an upgraded Bramo 323P-1 engine, primarily intended to:
Answer: Improve low-level performance and allow for increased bomb load.
Explanation: The Bramo 323P-1 engine upgrade in the Do 17Z-2 was specifically tuned to boost low-level performance, enabling a greater bomb load capacity.
For what operational role were the Dornier Do 17 Kauz variants (Kauz I and II) converted?
Answer: Night fighter
Explanation: The Do 17 Kauz variants were specifically converted and adapted for night fighter operations.
What was the intended operational role of the Dornier Do 17Z-8 'Geier' variant, and what factors precluded its mass production?
Answer: Ground attack; performance and lack of armor concerns.
Explanation: The Do 17Z-8 'Geier' was envisioned as a ground attack aircraft, but its production was halted due to concerns about its performance limitations and insufficient protective armor.
The standard crew complement for the Dornier Do 17 comprised two pilots.
Answer: False
Explanation: The typical crew size for the Dornier Do 17 was four individuals: a pilot, a bombardier, and two gunners.
The 7.92 mm MG 15 machine gun constituted the prevalent defensive armament employed on the Dornier Do 17.
Answer: True
Explanation: The 7.92 mm MG 15 machine gun was indeed the standard defensive armament utilized on the Dornier Do 17, typically mounted in various positions around the aircraft.
The Dornier Do 17 exhibited a conventional wing design, with wings directly affixed to the fuselage sides.
Answer: False
Explanation: The Dornier Do 17 featured a distinctive wing root design where the leading edge merged with the fuselage and declined sharply backward, which was not a conventional attachment.
The Bramo 323 radial engines, utilized in later Dornier Do 17 iterations, consistently received commendation for their power and reliability.
Answer: False
Explanation: While the Bramo 323 engines were used in later variants, they were often criticized for being underpowered, which limited the aircraft's performance, rather than being consistently praised.
To achieve weight savings, the Dornier Do 17 was equipped with non-self-sealing fuel tanks.
Answer: False
Explanation: The Dornier Do 17 was equipped with self-sealing fuel tanks, a crucial safety feature designed to mitigate fire risks and fuel loss during combat, not non-self-sealing tanks for weight reduction.
The 'Lotfe A' designation referred to an engine type utilized in certain Dornier Do 17 variants.
Answer: False
Explanation: The 'Lotfe A' designation referred to a type of bombsight used in the Dornier Do 17, not an engine type.
When laden with a full 1,000 kg bomb load, the Dornier Do 17Z-2 exhibited a combat range approximating 330 kilometers (210 miles).
Answer: True
Explanation: With a full 1,000 kg bomb load, the Do 17Z-2 had a combat range of approximately 330 km (210 miles).
The Dornier Do 17's slender and narrow fuselage rendered it an easily targeted platform for enemy anti-aircraft gunners.
Answer: False
Explanation: The Do 17's thin and narrow fuselage presented a smaller profile, making it a more difficult target for anti-aircraft gunners compared to wider-fuselaged aircraft.
What was the standard crew complement for the Dornier Do 17?
Answer: 4 (Pilot, Bombardier, 2 Gunners)
Explanation: The typical crew configuration for the Dornier Do 17 consisted of four members: one pilot, one bombardier, and two gunners.
What specific type of bombsight was commonly integrated into the Dornier Do 17?
Answer: Lotfe bombsight
Explanation: The Dornier Do 17 commonly utilized the 'Lotfe' bombsight, with variants such as the Lotfe A, B, or C 7/A being employed depending on the specific aircraft model.
When carrying a full 1,000 kg bomb load, what was the approximate combat range of the Dornier Do 17Z-2?
Answer: Approximately 330 km (210 miles)
Explanation: With a full 1,000 kg bomb load, the Do 17Z-2 had a combat range of approximately 330 kilometers (210 miles).
What was the measured wingspan of the Dornier Do 17 Z-2 variant?
Answer: 18 meters (59 ft 1 in)
Explanation: The Dornier Do 17 Z-2 had a wingspan measuring 18 meters (approximately 59 feet 1 inch).
At an altitude of 5,000 meters (16,404 feet), what was the maximum recorded speed of the Dornier Do 17 Z-2?
Answer: 410 km/h (255 mph)
Explanation: The maximum speed achieved by the Dornier Do 17 Z-2 at an altitude of 5,000 meters was approximately 410 km/h (255 mph).
How many 7.92 mm MG 15 machine guns constituted the standard defensive armament suite of the Dornier Do 17 Z-2?
Answer: Six
Explanation: The standard defensive armament for the Do 17 Z-2 comprised six 7.92 mm MG 15 machine guns, positioned in the upper forward, lower forward, upper rear, lower rear, and beam emplacements.
What constituted the primary performance-related challenge encountered by the Dornier Do 17Z variants?
Answer: Underpowered engines, limiting speed and altitude.
Explanation: A significant performance challenge for the Do 17Z variants, particularly those equipped with Bramo 323 engines, was their underpowered nature, which restricted speed, altitude, and combat radius.
The Dornier Do 17 made its combat debut in 1939 during the invasion of Poland.
Answer: False
Explanation: The Dornier Do 17's initial combat debut occurred earlier, in 1937, during the Spanish Civil War, deployed by the Condor Legion.
At the commencement of World War II, the Dornier Do 17 was classified by the Luftwaffe as a secondary or auxiliary bomber type.
Answer: False
Explanation: At the outset of World War II, the Dornier Do 17, alongside the Heinkel He 111, was considered one of the primary bomber types in service with the Luftwaffe.
The Dornier Do 17 saw significant action in campaigns such as the Battle of Britain and Operation Barbarossa.
Answer: True
Explanation: The Dornier Do 17 was extensively deployed in numerous major campaigns during the early to mid-war period, including the Battle of Britain and the initial phases of Operation Barbarossa.
By the conclusion of 1941, the Dornier Do 17's efficacy as a front-line bomber was augmented by its substantial bomb load capacity and extended operational range.
Answer: False
Explanation: By the end of 1941, the Dornier Do 17's effectiveness as a front-line bomber was actually curtailed by its relatively limited bomb load capacity and restricted range, which became increasingly inadequate against evolving Allied defenses.
During which military conflict did the Dornier Do 17 undertake its inaugural combat deployment?
Answer: The Spanish Civil War
Explanation: The Dornier Do 17 made its initial combat debut in 1937 during the Spanish Civil War, where it was employed by the German Condor Legion.
Identify a principal limitation that significantly curtailed the Dornier Do 17's effectiveness as a front-line bomber by the conclusion of 1941.
Answer: Relatively small bomb load capacity and restricted range
Explanation: By late 1941, the Do 17's effectiveness was hampered by its comparatively small bomb load capacity and limited operational range, which were increasingly insufficient for strategic bombing missions.
The Dornier Do 17 was operated in large numbers by the Royal Air Force during World War II.
Answer: False
Explanation: The Dornier Do 17 was primarily operated by the Luftwaffe, the air force of Nazi Germany. While some captured examples may have been evaluated, it was not operated in large numbers by the Royal Air Force.
The Dornier Do 17 was operated by Axis-aligned nations such as Finland and Bulgaria.
Answer: True
Explanation: Indeed, several Axis-aligned nations, including Finland and Bulgaria, operated the Dornier Do 17 within their air forces.
In excess of 4,000 Dornier Do 17 aircraft were constructed within Germany.
Answer: False
Explanation: Official figures indicate that 2,139 Dornier Do 17 aircraft were constructed on German assembly lines, a number significantly lower than 4,000.
Yugoslavia procured a license for the production of the Dornier Do 17, equipping its variants with German BMW engines.
Answer: False
Explanation: Yugoslavia did license the production of the Do 17, but its variants (Do 17Ka) were equipped with French Gnome-Rhône 14 NO radial engines, not German BMW engines.
The Dornier Do 17Z Werknummer 1160 was discovered in a preserved state within a museum storage facility.
Answer: False
Explanation: The Dornier Do 17Z Werknummer 1160 was discovered largely intact off the coast of England on the Goodwin Sands, not in a museum storage facility, and subsequently underwent conservation.
Which branch of the German military's air forces operated the Dornier Do 17 in substantial quantities during World War II?
Answer: Luftwaffe
Explanation: The Luftwaffe, the air force of Nazi Germany, was the primary operator of the Dornier Do 17 in significant numbers throughout World War II.
Which aircraft model succeeded the Dornier Do 17 in the Luftwaffe's bomber production lines?
Answer: Junkers Ju 88
Explanation: Production of the Dornier Do 17 ceased in mid-1940, being superseded in bomber production by the Junkers Ju 88. Its direct successor, the Do 217, began appearing later.
Which of the following nations operated the Dornier Do 17 within its air force inventory?
Answer: Finland
Explanation: Finland was among the nations that operated the Dornier Do 17, alongside other Axis-aligned countries and Axis co-belligerents.
According to official records, what was the total number of Dornier Do 17 aircraft constructed on German assembly lines?
Answer: 2,139
Explanation: Official production figures indicate that 2,139 Dornier Do 17 aircraft were manufactured on German assembly lines.
What specific type of engines powered the Yugoslavian-manufactured Do 17Ka variants?
Answer: Gnome-Rhône 14 NO
Explanation: The Yugoslavian-built Do 17Ka variants were powered by French Gnome-Rhône 14 NO radial engines.
What is the historical significance attributed to the Dornier Do 17Z Werknummer 1160?
Answer: It was discovered largely intact off the coast of England and conserved.
Explanation: The Dornier Do 17Z Werknummer 1160 is significant because it was salvaged largely intact from the Goodwin Sands off the English coast and has undergone extensive conservation by the Royal Air Force Museum.
On August 26, 1940, which Royal Air Force (RAF) squadron was credited with shooting down the Dornier Do 17Z Werknummer 1160?
Answer: No. 264 Squadron RAF
Explanation: The Dornier Do 17Z Werknummer 1160 was shot down on August 26, 1940, by Boulton Paul Defiant fighters belonging to No. 264 Squadron RAF.