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Grumman TBF Avenger Wiki2Web Clarity Challenge

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Study Guide: Grumman TBF Avenger: World War II Torpedo Bomber

Cheat Sheet:
Grumman TBF Avenger: World War II Torpedo Bomber Study Guide

Design and Development

Grumman manufactured the vast majority of the TBF Avenger aircraft produced.

Answer: False

Explanation: While Grumman designed and initially produced the Avenger, General Motors' Eastern Aircraft Division manufactured the vast majority of the aircraft, accounting for nearly three-quarters of the total production.

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Leroy Grumman was the lead designer for the Avenger, and the first prototype flew in August 1941.

Answer: True

Explanation: Leroy Grumman led the design of the Avenger, and the first prototype, designated XTBF-1, made its maiden flight on August 7, 1941.

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The Avenger's wing-folding mechanism was designed to increase the aircraft's agility in flight.

Answer: False

Explanation: The Avenger's patented "Sto-Wing" mechanism was designed to maximize storage space on aircraft carriers, not to enhance agility.

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The aircraft was officially named 'Avenger' in late 1941, before the attack on Pearl Harbor.

Answer: True

Explanation: The aircraft was officially assigned the name "Avenger" in October 1941, prior to the attack on Pearl Harbor, reflecting its intended role in naval warfare.

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General Motors adapted automotive mass production techniques for assembling the 'P-K Avenger' variant.

Answer: True

Explanation: General Motors engineers studied and adapted automotive-style mass production methods for assembling the Avenger, contributing to efficient manufacturing.

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Which division manufactured nearly three-quarters of the total Avenger production?

Answer: General Motors' Eastern Aircraft Division

Explanation: General Motors' Eastern Aircraft Division manufactured nearly three-quarters of the total Avenger production.

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Who led the design of the Avenger, and when did the first prototype make its maiden flight?

Answer: Leroy Grumman, August 7, 1941

Explanation: Leroy Grumman led the design of the Avenger, and the first prototype made its maiden flight on August 7, 1941.

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What was the purpose of the Avenger's patented "Sto-Wing" mechanism?

Answer: To maximize storage space on aircraft carriers.

Explanation: The Avenger's patented "Sto-Wing" mechanism was designed to maximize storage space on aircraft carriers, a critical consideration for naval operations.

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What innovation did General Motors apply when producing the Avenger, inspired by a Grumman prototype?

Answer: Adaptation of automotive-style mass production methods.

Explanation: General Motors engineers studied and adapted automotive-style mass production methods for assembling the Avenger, contributing to efficient manufacturing.

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World War II Service and Combat

The Grumman TBF Avenger was primarily designed as a dive bomber for the U.S. Navy.

Answer: False

Explanation: The Grumman TBF Avenger was primarily designed and utilized as a carrier-based torpedo bomber, not a dive bomber.

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The Grumman TBF Avenger made its combat debut during the Battle of Midway in 1942.

Answer: True

Explanation: The Avenger entered U.S. service in 1942 and first saw combat action during the pivotal Battle of Midway.

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The Avenger was recognized as the least effective torpedo bomber used in World War II.

Answer: False

Explanation: Contrary to this statement, the Avenger was recognized as one of the most effective torpedo bombers of World War II, credited with sinking numerous enemy vessels, including approximately 30 submarines.

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The Avenger's participation in the Battle of the Eastern Solomons resulted in the sinking of the Japanese light carrier Ryūjō.

Answer: True

Explanation: During the Battle of the Eastern Solomons, Avengers successfully sank the Japanese light carrier Ryūjō and claimed one enemy dive bomber.

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The Avenger proved ineffective in anti-submarine warfare (ASW) due to its limited ordnance.

Answer: False

Explanation: The Avenger proved highly effective in anti-submarine warfare (ASW), particularly when operating from escort carriers, due to its robust ordnance and capabilities.

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What was the primary role of the Grumman TBF Avenger aircraft during World War II?

Answer: A carrier-based torpedo bomber.

Explanation: The Grumman TBF Avenger was primarily designed and utilized as a carrier-based torpedo bomber.

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In which year did the Avenger enter U.S. service, and where did it make its combat debut?

Answer: 1942, Battle of Midway

Explanation: The Avenger entered U.S. service in 1942 and first saw combat action during the pivotal Battle of Midway.

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What distinction did the Avenger earn regarding its effectiveness in World War II?

Answer: It was the most effective submarine killer and widely used torpedo bomber.

Explanation: The Avenger became recognized as one of the most effective torpedo bombers of World War II, credited with sinking approximately 30 submarines.

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During the Battle of the Eastern Solomons, Avengers achieved which significant success?

Answer: Sinking the Japanese light carrier Ryūjō.

Explanation: During the Battle of the Eastern Solomons, Avengers successfully sank the Japanese light carrier Ryūjō and claimed one enemy dive bomber.

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The Avenger's effectiveness in anti-submarine warfare (ASW) was particularly noted when operating from:

Answer: Escort carriers providing convoy air cover.

Explanation: The Avenger proved highly effective in anti-submarine warfare (ASW), particularly when operating from escort carriers that provided air cover for Allied convoys.

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Variants and Designations

Avengers manufactured by General Motors carried the designation TBF.

Answer: False

Explanation: Avengers manufactured by General Motors were designated TBM, not TBF.

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The TBF-1C variant reduced fuel capacity compared to the TBF-1 to save weight.

Answer: False

Explanation: The TBF-1C variant actually increased fuel capacity compared to the TBF-1, enhancing its operational range.

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The TBM-3 variant was the least produced version of the Avenger.

Answer: False

Explanation: The TBM-3 variant was the most numerous version of the Avenger produced, not the least.

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The Royal Navy initially designated the Avenger as 'Tarpon' before adopting the U.S. Navy's name.

Answer: True

Explanation: The Royal Navy initially designated the Avenger as the "Tarpon." This name was later discontinued and replaced with the U.S. Navy's designation, "Avenger."

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The Royal Canadian Navy modified Avengers by removing the dorsal turret and adding radar for ASW.

Answer: True

Explanation: The RCN modified Avengers for ASW by adding radar, ECM equipment, and sonobuoys, often replacing the dorsal turret with a glass canopy for better observation.

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The TBM-3E variant incorporated advanced search radar and removed the ventral gun.

Answer: True

Explanation: The TBM-3E featured a strengthened airframe, incorporated search radar, and had its ventral gun removed.

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The TBM-3R variant was designed as a specialized anti-submarine warfare platform.

Answer: False

Explanation: The TBM-3R variant was converted for Carrier Onboard Delivery (COD) transport duties, not as a specialized anti-submarine warfare platform.

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The TBM-3W served as an early ship-based airborne early warning (AEW) platform.

Answer: True

Explanation: The TBM-3W was adapted as the first ship-based airborne early warning (AEW) platform, equipped with AN/APS-20 radar.

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The Royal Canadian Navy designated its modified anti-submarine Avengers as AS 4.

Answer: False

Explanation: The Royal Canadian Navy designated its modified anti-submarine Avengers as AS 3, with later versions receiving the AS 3M designation.

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The Royal Navy designated the TBM-3S anti-submarine variant as the Avenger AS5.

Answer: True

Explanation: The Royal Navy designated the TBM-3S variant as the Avenger AS5.

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The Royal Navy designated postwar TBM-3E Avengers as the Avenger AS4.

Answer: True

Explanation: The Royal Navy designated the postwar TBM-3E Avengers as the Avenger AS4.

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The TBM-3Q variant was converted for electronic countermeasures (ECM) and retained its turret.

Answer: True

Explanation: The TBM-3Q variant was converted for electronic countermeasures (ECM) operations and retained its defensive gun turret.

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The Royal Netherlands Navy used the TBM-3S2 variant, designated A-28, for anti-submarine missions.

Answer: True

Explanation: The Royal Netherlands Navy utilized the TBM-3S2 variant, designated A-28, for anti-submarine attack missions.

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The TBM-3N variant was adapted for reconnaissance missions.

Answer: False

Explanation: The TBM-3N variant was converted for night attack operations, not reconnaissance missions.

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The TBM-3P variant was a conversion designed for photo-reconnaissance duties.

Answer: True

Explanation: The TBM-3P variant was a conversion specifically designed for photo-reconnaissance missions.

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The TBM-3M variant was designed to launch the large 'Tiny Tim' rocket.

Answer: True

Explanation: The TBM-3M variant was converted to serve as a launcher for the "Tiny Tim" rocket.

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What designation was given to Avengers manufactured by General Motors?

Answer: TBM

Explanation: Avengers manufactured by General Motors were designated as TBM.

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Which Avenger variant was produced in the largest numbers?

Answer: TBM-3

Explanation: The TBM-3 variant was the most numerous version of the Avenger produced.

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What was the Royal Navy's initial designation for the Avenger before adopting the U.S. name?

Answer: Tarpon

Explanation: The Royal Navy initially designated the Avenger as the "Tarpon." This name was later discontinued and replaced with the U.S. Navy's designation, "Avenger."

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Which modifications did the Royal Canadian Navy implement on Avengers for anti-submarine warfare (ASW)?

Answer: Removed the turret, added radar, ECM, and sonobuoys.

Explanation: The RCN modified Avengers for ASW by adding radar, ECM equipment, and sonobuoys, often replacing the dorsal turret with a glass canopy for better observation.

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The TBM-3E variant incorporated which key improvements over earlier models?

Answer: Strengthened airframe, search radar, and removal of the ventral gun.

Explanation: The TBM-3E featured a strengthened airframe, incorporated search radar, and had its ventral gun removed.

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What was the specific function of the TBM-3R variant?

Answer: Carrier Onboard Delivery (COD) transport.

Explanation: The TBM-3R variant was converted for Carrier Onboard Delivery (COD) transport duties, not as a specialized anti-submarine warfare platform.

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The TBM-3W variant was adapted for what pioneering role in naval aviation?

Answer: The first ship-based airborne early warning (AEW) platform.

Explanation: The TBM-3W was adapted as the first ship-based airborne early warning (AEW) platform, equipped with AN/APS-20 radar.

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The Royal Navy designated the TBM-3S anti-submarine strike variant as:

Answer: Avenger AS5

Explanation: The Royal Navy designated the TBM-3S variant as the Avenger AS5.

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The TBM-3P variant served what purpose?

Answer: Photo-reconnaissance.

Explanation: The TBM-3P variant was a conversion specifically designed for photo-reconnaissance missions.

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What specialized ordnance was the TBM-3M variant designed to launch?

Answer: Tiny Tim rocket

Explanation: The TBM-3M variant was converted to serve as a launcher for the "Tiny Tim" rocket.

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Technical Specifications and Armament

The Avenger was powered by a Pratt & Whitney Wasp radial engine producing 1,900 horsepower.

Answer: False

Explanation: The Avenger was powered by a Wright R-2600-20 Twin Cyclone radial engine, which produced 1,900 horsepower, not a Pratt & Whitney Wasp.

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The typical Avenger crew consisted of a pilot, a navigator, and a tail gunner.

Answer: False

Explanation: The typical Avenger crew consisted of three members: a pilot, a turret gunner, and a radioman who also served as the bombardier and ventral gunner. It did not include a dedicated navigator or tail gunner.

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Early Avenger models featured a synchronized .30 caliber machine gun in the nose and a .50 caliber gun in the dorsal turret.

Answer: True

Explanation: Early Avenger models were armed with a synchronized .30 caliber machine gun in the nose and a .50 caliber machine gun in an electrically powered dorsal turret, along with a ventral gun.

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Later Avenger variants improved forward armament by adding two wing-mounted .50 caliber machine guns.

Answer: True

Explanation: Later Avenger models replaced the single nose-mounted .30 caliber gun with two wing-mounted .50 caliber Browning M2 machine guns, enhancing the aircraft's forward firepower.

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The Avenger's cockpit allowed easy interior access from the crew compartment for the pilot.

Answer: False

Explanation: The Avenger's cockpit did not allow for direct interior access from the crew compartment; the pilot operated independently.

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The Avenger's bomb bay could accommodate a single torpedo or a 2,000-pound bomb.

Answer: True

Explanation: The Avenger's bomb bay was capable of carrying a single Mark 13 torpedo, one 2,000-pound bomb, or up to four 500-pound bombs.

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The 'Yehudi lights' were used on Avengers to improve pilot visibility during night operations.

Answer: False

Explanation: The 'Yehudi lights' were used on Avengers for camouflage research, automatically adjusting brightness to match the sky for reduced visibility, not to improve pilot visibility.

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Besides bombs and torpedoes, Avengers could carry up to eight 3.5-inch or 5-inch rockets.

Answer: True

Explanation: The Avenger could also be armed with up to eight 3.5-inch or 5-inch rockets.

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The maximum speed of the TBF Avenger was approximately 350 mph.

Answer: False

Explanation: The maximum speed of the TBF Avenger was approximately 278 mph, not 350 mph.

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The Avenger had a service ceiling of approximately 10,000 feet.

Answer: False

Explanation: The Avenger had a service ceiling of approximately 22,600 feet, not 10,000 feet.

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The fully loaded operational range of the Avenger was around 500 miles.

Answer: False

Explanation: The fully loaded operational range of the Avenger was approximately 1,000 miles, not 500 miles.

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What type of engine powered the Avenger, and what was its horsepower?

Answer: Wright R-2600-20 Twin Cyclone, 1,900 hp

Explanation: The Avenger was powered by a Wright R-2600-20 Twin Cyclone radial engine, producing 1,900 horsepower.

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Which roles were typically filled by the three-person crew of the Avenger?

Answer: Pilot, Radio Operator/Bombardier, Turret Gunner

Explanation: The Avenger typically had a three-person crew: a pilot, a turret gunner, and a radioman who also served as the bombardier and ventral gunner.

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How was the forward armament of later Avenger variants improved compared to early models?

Answer: Two wing-mounted .50 caliber machine guns were added.

Explanation: Later Avenger models replaced the single nose-mounted .30 caliber gun with two wing-mounted .50 caliber Browning M2 machine guns, enhancing the aircraft's forward firepower.

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What was a significant limitation regarding the Avenger's internal crew configuration?

Answer: There was no direct interior access from the crew compartment to the pilot's cockpit.

Explanation: The Avenger's cockpit did not allow for direct interior access from the crew compartment; the pilot operated independently.

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What types of ordnance could the Avenger's bomb bay carry?

Answer: A single torpedo, one 2,000-pound bomb, or up to four 500-pound bombs.

Explanation: The Avenger's bomb bay was capable of carrying a single Mark 13 torpedo, one 2,000-pound bomb, or up to four 500-pound bombs.

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What was the purpose of the 'Yehudi lights' used in Avenger camouflage research?

Answer: To automatically adjust brightness to match the sky for reduced visibility.

Explanation: The 'Yehudi lights' were used on Avengers for camouflage research, automatically adjusting brightness to match the sky for reduced visibility, not to improve pilot visibility.

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Besides bombs and torpedoes, what other type of ordnance could the Avenger carry?

Answer: Up to eight 3.5-inch or 5-inch rockets.

Explanation: The Avenger could also be armed with up to eight 3.5-inch or 5-inch rockets.

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What was the maximum speed of the TBF Avenger?

Answer: 278 mph

Explanation: The maximum speed of the TBF Avenger was approximately 278 mph.

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What was the service ceiling of the Avenger?

Answer: 22,600 feet

Explanation: The Avenger had a service ceiling of approximately 22,600 feet.

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What was the fully loaded operational range of the Avenger?

Answer: 1,000 miles

Explanation: The Avenger had a fully loaded operational range of approximately 1,000 miles.

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Post-War and Civilian Applications

NACA used Avengers in wind tunnel tests to study engine performance.

Answer: False

Explanation: NACA utilized Avengers in wind tunnel tests primarily for studies related to drag reduction and camouflage techniques, not engine performance.

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Post-military Avengers were primarily used as trainers for new pilots.

Answer: False

Explanation: Post-military Avengers were primarily converted for civilian roles such as agricultural spray-applicators and water-bombers, not as trainers for new pilots.

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Forest Protection Limited (FPL) operated the world's largest fleet of civilian Avengers.

Answer: True

Explanation: Forest Protection Limited (FPL), based in New Brunswick, Canada, operated the largest civilian fleet of Avengers.

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RNZAF Avengers were used in early trials for aerial topdressing in New Zealand.

Answer: True

Explanation: In 1945, Royal New Zealand Air Force Avengers were used in trials for aerial topdressing, a process that significantly boosted agricultural productivity.

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The Royal Canadian Navy replaced Avengers with the Grumman S-2 Tracker for improved range and safety.

Answer: True

Explanation: The RCN transitioned to the Grumman S-2 Tracker because it offered superior range, greater capacity, and the safety benefit of a second engine for long-range ASW patrols.

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How did NACA utilize the Avenger in camouflage research?

Answer: In wind tunnel tests for drag reduction and camouflage studies.

Explanation: NACA utilized Avengers in wind tunnel tests primarily for studies related to drag reduction and camouflage techniques, fitting them with "Yehudi lights" to match sky brightness.

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What was a common primary post-military use for many Avenger aircraft?

Answer: Agricultural spray-applicators and water-bombers.

Explanation: Many Avengers were converted for civilian roles such as agricultural spray-applicators and water-bombers, particularly for firefighting operations.

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Which Canadian organization operated the world's largest fleet of civilian Avengers?

Answer: Forest Protection Limited (FPL)

Explanation: Forest Protection Limited (FPL), based in New Brunswick, Canada, operated the largest civilian fleet of Avengers.

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Why did the Royal Canadian Navy eventually replace its Avengers with the Grumman S-2 Tracker?

Answer: The Tracker offered superior range, capacity, and twin-engine safety.

Explanation: The RCN transitioned to the Grumman S-2 Tracker because it offered superior range, greater capacity for electronics and weaponry, and the safety benefit of a second engine for long-range ASW patrols.

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Notable Personnel and Incidents

George H. W. Bush, later U.S. President, flew Avengers and survived being shot down.

Answer: True

Explanation: Future U.S. President George H. W. Bush served as a naval aviator flying a TBM Avenger and survived being shot down during a mission.

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Actor Paul Newman was a pilot of the TBF Avenger during World War II.

Answer: False

Explanation: Actor Paul Newman served as a rear gunner in an Avenger, as he was unable to qualify as a pilot due to color blindness.

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The disappearance of Flight 19, consisting of five Avengers, contributed to the mystery of the Bermuda Triangle.

Answer: True

Explanation: Flight 19, a training mission involving five Avengers, famously disappeared over the Bermuda Triangle, contributing to the area's mysterious reputation.

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A Royal Navy Avenger gunner successfully shot down a V-1 flying bomb in mid-air.

Answer: True

Explanation: Leading Airman Fred Shirmer, a Telegraphist Air Gunner in a Royal Navy Avenger, successfully shot down a V-1 flying bomb on July 9, 1944.

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Future U.S. President George H. W. Bush flew which type of aircraft during his naval service?

Answer: Grumman TBM Avenger

Explanation: Future U.S. President George H. W. Bush served as a naval aviator flying a TBM Avenger.

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What famous incident involving five Avengers contributed to the legend of the Bermuda Triangle?

Answer: The disappearance of Flight 19.

Explanation: Flight 19, a training mission involving five Avengers, famously disappeared over the Bermuda Triangle, contributing to the area's mysterious reputation.

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Comparative Roles and Operational Context

Pilots described the Avenger as highly agile and nimble, similar to a fighter aircraft.

Answer: False

Explanation: Pilots generally described the Avenger as stable and rugged, often likening its handling to that of a truck, rather than agile or nimble like a fighter aircraft.

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The Avenger's stable handling and good radio capabilities made it suitable for use by Commanders, Air Group (CAGs).

Answer: True

Explanation: The Avenger's good radio capabilities, stable handling characteristics, and long operational range made it an ideal platform for CAGs to command air groups from.

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The Japanese Nakajima B5N torpedo bomber generally outperformed the Avenger in terms of service ceiling and range.

Answer: False

Explanation: The Avenger generally outperformed the Japanese Nakajima B5N 'Kate' in terms of service ceiling and operational range.

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Escort carrier sailors nicknamed the TBF Avenger 'fighter' due to its speed and maneuverability.

Answer: False

Explanation: Escort carrier sailors nicknamed the TBF Avenger 'Turkey' due to its large size and perceived lack of maneuverability, not 'fighter'.

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How did pilots typically describe the handling characteristics of the Avenger?

Answer: Like a stable, rugged truck.

Explanation: Pilots generally described the Avenger as stable and rugged, often likening its handling to that of a truck, rather than agile or nimble like a fighter aircraft.

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Why was the Avenger considered a suitable command aircraft for Commanders, Air Group (CAGs)?

Answer: Its good radio, stable handling, and long range.

Explanation: The Avenger's good radio capabilities, stable handling characteristics, and long operational range made it an ideal platform for CAGs to command air groups from.

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Compared to the Japanese Nakajima B5N 'Kate', the Avenger generally offered:

Answer: Higher service ceiling and longer range.

Explanation: The Avenger generally outperformed the Japanese Nakajima B5N 'Kate' in terms of service ceiling and operational range.

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What nickname did escort carrier sailors give the TBF Avenger, and why?

Answer: 'Turkey' due to its large size and perceived lack of maneuverability.

Explanation: Escort carrier sailors nicknamed the TBF Avenger 'Turkey' due to its large size and perceived lack of maneuverability, not 'fighter'.

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