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Total Categories: 6
The Nakajima Type 91 fighter was a Japanese biplane aircraft primarily utilized by the Imperial Japanese Navy.
Answer: False
This assertion is inaccurate. The Nakajima Type 91 was configured as a monoplane, specifically a parasol-wing design, and its principal operator was the Imperial Japanese Army, not the Navy.
The developmental lineage of the Nakajima Type 91 fighter traces back to the Nakajima NC series of prototypes.
Answer: True
This statement is correct. The Nakajima Type 91 fighter evolved directly from the preceding Nakajima NC series of prototypes, representing a significant step in its design progression.
The prototype of the Nakajima Type 91 fighter conducted its inaugural flight in 1931.
Answer: True
This statement is accurate. The initial prototype of the Nakajima Type 91 fighter made its first flight in the year 1931, marking the commencement of its flight testing phase.
The development of the Nakajima Type 91 fighter was initiated in response to a requirement issued by the Imperial Japanese Navy in 1927.
Answer: False
This statement is incorrect. The development was driven by a requirement from the Imperial Japanese Army, not the Navy, and this requirement was issued in 1927.
The airframe of the Type 91 prototype was nearly identical to that of the earlier Nakajima NC series prototypes.
Answer: False
This statement is false. While derived from the NC series, the Type 91 prototype's airframe incorporated significant modifications, including a reduced wing size and a redesigned tail section, differentiating it substantially from its predecessors.
Technical challenges concerning directional stability and the aircraft's center of gravity delayed the operational service entry of the Nakajima Type 91 fighter.
Answer: True
This statement is accurate. Issues related to directional stability and the center of gravity necessitated modifications, which consequently delayed the full integration of the Nakajima Type 91 fighter into operational service.
The Nakajima NC variant, a precursor to the Type 91, was powered by a Nakajima Kotobuki engine.
Answer: False
This statement is false. The Nakajima NC prototype, which served as a precursor to the Type 91, was powered by a Bristol Jupiter radial engine.
The Nakajima NC prototype achieved a maximum speed of 268 km/h.
Answer: True
This statement is accurate. The Nakajima NC prototype, a precursor to the Type 91, recorded a maximum speed of 268 km/h.
The development of the Nakajima Type 91 fighter was initiated in response to a requirement from which year?
Answer: 1927
The development of the Nakajima Type 91 fighter was initiated in response to a specific requirement issued by the Imperial Japanese Army in the year 1927.
What technical problems caused delays in the Nakajima Type 91 fighter's service entry?
Answer: Directional stability and center of gravity issues
Delays in the operational service entry of the Nakajima Type 91 fighter were primarily caused by technical issues related to its directional stability and center of gravity.
The Nakajima NC prototype, a precursor to the Type 91, was powered by which engine?
Answer: Bristol Jupiter
The Nakajima NC prototype, which served as a developmental precursor to the Type 91 fighter, was powered by a Bristol Jupiter radial engine.
Which of the following modifications distinguished the Type 91 prototype from the earlier Nakajima NC series?
Answer: Adoption of a Townend ring cowling
A key modification distinguishing the Type 91 prototype from the earlier Nakajima NC series was the adoption of a Townend ring cowling around the engine, improving aerodynamics and cooling.
How many Nakajima NC prototypes were constructed before the Type 91 development?
Answer: Eight
A total of eight Nakajima NC prototypes were constructed prior to the full development of the Type 91 fighter.
A total of 450 Nakajima Type 91 fighters were constructed.
Answer: True
This statement is accurate. The total production run for the Nakajima Type 91 fighter aircraft amounted to 450 units.
The Type 91-2 variant was distinguished by its incorporation of the Bristol Jupiter engine.
Answer: False
This statement is false. The Type 91-2 variant was primarily distinguished by its upgraded powerplant, the Nakajima Kotobuki 2 radial engine, not the Bristol Jupiter.
The primary production variant, the Type 91-1, utilized a Nakajima-built Bristol Jupiter engine generating up to 520 horsepower.
Answer: True
This statement is accurate. The Nakajima Army Type 91-1 fighter, the main production variant, was equipped with a Nakajima-built Bristol Jupiter engine capable of producing between 450 and 520 horsepower (336-390 kW).
The Nakajima Army Type 91-1 fighter possessed a wingspan of approximately 11 meters.
Answer: True
This statement is accurate. The Nakajima Army Type 91-1 fighter had a wingspan measuring approximately 11 meters (36 feet 1 inch).
The Nakajima Army Type 91-1 fighter was powered by a Nakajima Kotobuki engine.
Answer: False
This statement is false. The primary production variant, the Nakajima Army Type 91-1, was powered by a Nakajima-built Bristol Jupiter engine, not a Kotobuki.
The standard armament for the Nakajima Army Type 91-1 fighter included one 7.7mm machine gun and one 20mm cannon.
Answer: False
This statement is false. The standard armament consisted of two fixed, forward-firing 7.7mm Type 89 machine guns, not a combination of a machine gun and a cannon.
Twenty-three units of the Nakajima Army Type 91-2 fighter were produced.
Answer: True
This statement is accurate. The production run for the Nakajima Army Type 91-2 variant comprised twenty-three aircraft.
The Nakajima Type 91 fighter was powered by a Bristol Jupiter radial engine rated at 450 horsepower in its main production variant.
Answer: True
This statement is accurate. The main production variant, the Type 91-1, was powered by a Nakajima-built Bristol Jupiter engine with an output ranging from 450 to 520 horsepower (336-390 kW).
What type of aircraft was the Nakajima Type 91 fighter?
Answer: A single-engine, single-seat fighter with a parasol wing.
The Nakajima Type 91 fighter was characterized as a single-engine, single-seat fighter aircraft featuring a distinctive parasol wing configuration.
What was the total number of Nakajima Type 91 fighters built?
Answer: Exactly 450
A total of 450 Nakajima Type 91 fighters were constructed during its production run.
Which variant of the Nakajima Type 91 fighter featured an upgraded powerplant, the Nakajima Kotobuki 2 radial engine?
Answer: Nakajima Army Type 91-2
The Nakajima Army Type 91-2 variant was distinguished by its upgraded powerplant, specifically the Nakajima Kotobuki 2 radial engine.
What was the approximate power output of the Nakajima-built Bristol Jupiter engine used in the Type 91-1 fighter?
Answer: 336-390 kW (450-520 hp)
The Nakajima-built Bristol Jupiter engine utilized in the Type 91-1 fighter variant provided an output ranging from 336 kW to 390 kW, equivalent to approximately 450 to 520 horsepower.
What were the approximate dimensions of the Nakajima Army Type 91-1 fighter?
Answer: Length: 7.27m, Wingspan: 11m, Height: 2.79m
The Nakajima Army Type 91-1 fighter measured approximately 7.27 meters in length, had a wingspan of 11 meters, and a height of 2.79 meters.
What was the empty weight of the Nakajima Army Type 91-1 fighter?
Answer: 1,075 kg (2,370 lb)
The empty weight of the Nakajima Army Type 91-1 fighter was approximately 1,075 kilograms (2,370 pounds).
What was the typical armament carried by the Nakajima Army Type 91-1 fighter?
Answer: Two 7.7mm Type 89 machine guns
The typical armament for the Nakajima Army Type 91-1 fighter consisted of two fixed, forward-firing 7.7mm Type 89 machine guns.
What was the wing loading of the Nakajima Army Type 91-1 fighter?
Answer: 76.5 kg/m² (15.7 lb/sq ft)
The wing loading for the Nakajima Army Type 91-1 fighter was calculated at 76.5 kg/m² (15.7 lb/sq ft).
What was the approximate gross weight of the Nakajima Army Type 91-1 fighter?
Answer: 1,530 kg (3,373 lb)
The approximate gross weight of the Nakajima Army Type 91-1 fighter was 1,530 kilograms (3,373 pounds).
What was the power-to-weight ratio of the Nakajima Army Type 91-1 fighter?
Answer: 0.13 hp/lb (0.21 kW/kg)
The power-to-weight ratio for the Nakajima Army Type 91-1 fighter was approximately 0.21 kW/kg (0.13 hp/lb).
The Nakajima Type 91 fighter was manufactured exclusively by the Nakajima Aircraft Company.
Answer: False
This statement is false. While Nakajima Aircraft Company was the primary manufacturer, production also involved the Ishikawajima Aircraft Company, which built a significant portion of the total aircraft.
The Imperial Japanese Army officially designated the aircraft as the Nakajima Navy Type 91 fighter.
Answer: False
This statement is incorrect. Upon its adoption, the Imperial Japanese Army officially designated the aircraft as the Nakajima Army Type 91 fighter, distinguishing it from naval designations.
The Nakajima Type 91 fighter entered operational service in 1931 and was retired from active duty in 1937.
Answer: True
This statement is correct. The aircraft commenced its service life in 1931 and was subsequently retired from active service approximately six years later, in 1937.
The Nakajima Type 91 fighter was manufactured during the period spanning 1931 to 1934.
Answer: True
This statement is correct. The manufacturing phase for the Nakajima Type 91 fighter extended from 1931 through 1934.
The Kawasaki Army Type 95 fighter eventually succeeded the Nakajima Type 91 fighter in service.
Answer: True
This statement is accurate. The Nakajima Type 91 fighter was gradually replaced in the Imperial Japanese Army's inventory by the subsequent Kawasaki Army Type 95 fighter.
The Republic of China's air force operated twelve Nakajima Type 91 fighters against Japanese forces.
Answer: True
This statement is accurate. The Chinese Nationalist Air Force acquired twelve Type 91-1 fighters and deployed them in combat operations against Japanese forces.
The Manchukuo Imperial Air Force did not operate the Nakajima Type 91 fighter.
Answer: False
This statement is false. The Manchukuo Imperial Air Force was among the operators of the Nakajima Type 91 fighter, alongside the Imperial Japanese Army and the Chinese Nationalist Air Force.
Which military branch was the primary operator of the Nakajima Type 91 fighter?
Answer: Imperial Japanese Army
The Imperial Japanese Army was the principal operator of the Nakajima Type 91 fighter aircraft.
Who manufactured the Nakajima Type 91 fighter aircraft?
Answer: Nakajima Aircraft Company
The Nakajima Type 91 fighter aircraft was manufactured by the Nakajima Aircraft Company.
During which period was the Nakajima Type 91 fighter manufactured?
Answer: 1931-1934
The manufacturing period for the Nakajima Type 91 fighter spanned from 1931 to 1934.
How many units did the Ishikawajima Aircraft Company build for the Nakajima Type 91 fighter program?
Answer: 100
The Ishikawajima Aircraft Company was responsible for constructing 100 units of the Nakajima Type 91 fighter as part of the overall production program.
What aircraft type gradually replaced the Nakajima Type 91 fighter in the Imperial Japanese Army's service?
Answer: Kawasaki Army Type 95 fighter
The Nakajima Type 91 fighter was gradually supplanted in service by the Kawasaki Army Type 95 fighter, a transition that occurred between 1936 and 1937.
Which foreign air force purchased twelve Nakajima Type 91-1 fighters for use against Japanese forces?
Answer: Chinese Nationalist Air Force
The Chinese Nationalist Air Force purchased twelve Nakajima Type 91-1 fighters, which were subsequently employed in combat operations against Japanese forces.
Besides the Imperial Japanese Army and the Chinese Nationalist Air Force, which other air force operated the Nakajima Type 91?
Answer: Manchukuo Imperial Air Force
In addition to the Imperial Japanese Army and the Chinese Nationalist Air Force, the Manchukuo Imperial Air Force also operated the Nakajima Type 91 fighter.
The Nakajima Type 91 fighter featured a retractable landing gear system.
Answer: False
This statement is false. The Nakajima Type 91 fighter was equipped with a conventional fixed landing gear system, which included a tailskid for ground maneuvering.
The Nakajima Army Type 91-1 fighter had an operational endurance of approximately 3 hours.
Answer: False
This statement is false. The operational endurance of the Nakajima Army Type 91-1 fighter was approximately 2 hours, not 3 hours.
The Nakajima Army Type 91-1 fighter could ascend to an altitude of 3,000 meters in approximately 4 minutes.
Answer: True
This statement is accurate. The aircraft demonstrated the capability to reach an altitude of 3,000 meters in approximately 4 minutes.
The Nakajima Type 91 fighter was equipped with a two-bladed, variable-pitch propeller.
Answer: False
This statement is false. The Nakajima Type 91 fighter was fitted with a two-bladed, fixed-pitch propeller, not a variable-pitch one.
The Nakajima Type 91 fighter had a service ceiling of 9,000 meters.
Answer: True
This statement is accurate. The service ceiling for the Nakajima Type 91 fighter was established at 9,000 meters (approximately 30,000 feet).
Which of the following was a key design feature of the Nakajima Type 91 fighter?
Answer: A tailskid
A significant design feature of the Nakajima Type 91 fighter was its fixed landing gear system, which included a tailskid for ground handling.
What was the maximum speed of the Nakajima Army Type 91-1 fighter?
Answer: 300 km/h (190 mph)
The maximum speed achieved by the Nakajima Army Type 91-1 fighter was approximately 300 km/h (190 mph).
How long did it take the Nakajima Army Type 91-1 fighter to reach an altitude of 3,000 meters?
Answer: 4 minutes
The Nakajima Army Type 91-1 fighter could reach an altitude of 3,000 meters in approximately 4 minutes.
What was the operational endurance of the Nakajima Army Type 91-1 fighter?
Answer: 2 hours
The operational endurance of the Nakajima Army Type 91-1 fighter was approximately 2 hours.
A surviving fuselage section of the Nakajima Type 91 fighter is displayed at the Ghibli Museum.
Answer: False
This statement is false. A fuselage section of the Nakajima Type 91 fighter is preserved and exhibited at the Tokorozawa Aviation Museum in Saitama, not the Ghibli Museum.
A propeller from a Nakajima Type 91 fighter is preserved at the Tokorozawa Aviation Museum.
Answer: False
This statement is false. While a fuselage section is preserved at the Tokorozawa Aviation Museum, a propeller from a Nakajima Type 91 fighter is located at Yanagisawa Shrine in Nara Prefecture.
Where is a surviving fuselage section of the Nakajima Type 91 fighter currently preserved?
Answer: Tokorozawa Aviation Museum, Saitama
A surviving fuselage section of the Nakajima Type 91 fighter is preserved and displayed at the Tokorozawa Aviation Museum in Saitama Prefecture, Japan.
What is the significance of the references cited in the source material regarding the Nakajima Type 91 fighter?
Answer: They serve as authoritative sources for the factual information presented.
The references cited, such as 'Japanese Aircraft 1910-1941' by Mikesh and Abe, and 'The Complete Book of Fighters' by Green, serve as authoritative sources that substantiate the factual information presented about the Nakajima Type 91 fighter, enabling verification and further research.