What kind of planes were sent up to defend Pearl Harbor?

Answer 1

Answer

P-40 Warhawks. These were stationed at the air bases around Pearl Harbor. A few managed to get airborne.

Also, during the battle, a flight of B-17's arrived from the mainland US and landed.

Custermen

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As Custermen mentioned, P-40 Warhawks did defend Pearl Harbour but they were vastly outclassed. The A6M Mitsubishi "Zeros" could out turn, outrun, and outgun the poor boys in Warhawks and Wildcats. The Zero did have it's weaknesses though. It sacrificed armor plating for the pilot and it's engine. it was covered in mostly canvas and it didn't have self sealing fuel tanks. They couldn't take a dive to well but the Americans didn't find this out until a little later. It was the one of the few carrier-borne aircraft that had better performance standards than those of land based fighters.

The A6M possessed many shortcomings, which were only to be revealed six months later when a virtually intact specimen was obtained. On June 3, 1942, Flight Petty Officer Tadayoshi Koga left the flight deck of the carrier Ryujo in his Mitsubishi A6M2 Model 21 fighter as part of a task force assigned to attack Dutch Harbor in the Aleutian Islands. His A6M2, which had been built in February, was on its first operational mission. On his way back to the Ryujo, Koga found that two bullets had punctured his fuel supply and he informed his flight commander that he intended to land on Akutan Island, designated as an emergency landing field. Koga did not make the landing field and instead made a forced landing in a marsh where the aircraft flipped over, in which he was killed, from a broken neck. Five weeks later, a US Navy PBY Catalina, making a routine patrol, discovered the Japanese fighter upside down in the marsh. This single fighter was probably one of the greatest prizes of the Pacific war. Hardly damaged, it was shipped back to the USA where it was exhaustively tested. Information gathered during testing of the A6M2 prompted the American aircraft manufacturer Grumman, to lighten the Grumman F4F Wildcat,9 and install a larger engine on the Grumman F6F Hellcat.10

Some Zeros were the first aircraft used intentionally as suicide attack planes. Modified Zeros assigned to Air Group 201 in the Philippines became the first Japanese aircraft used on planned suicide missions against American surface vessels. Air Group 201, assisted by volunteer pilots from Air Group 601 and other Navy units in the area, became the first Kamikaze (Divine Wind) suicide squadron in the Japanese Naval Air Force. The outstanding successes gained by this form of attack led to the formation of other Kamikaze units, and the bomb-carrying Zeros became the prime suicide attack bombers of the Navy.

More Zero-Sens were produced than any other wartime Japanese aircraft. Mitsubishi alone produced 3,879 aircraft of this type, Nakajima built 6,215 which, together with the 844 trainer and floatplane variants produced by Sasebo, Hitachi and Nakajima, brought the grand total of A6M series aircraft to 10,938. The Zero-Sen possessed complete mastery in the air over the Pacific until the Battle of Midway in June 1942, the actual turning point of the Pacific War although recognized by only a few at the time. The value of the fighter steadily declined and its lowest point was reached when it was selected to lead the Navy's Air Force in mass suicide, and the Japanese nation followed. The installation of the Kinsei engine brought Zero-Sen closer to Allied standards attained at that stage in the war, but the moment for decision had passed and, with it, victory for the Allies had become a foregone conclusion. The fighter that started the Pacific war was no longer able to fight it--nor was the nation that conceived it.

- ARC 1077