Key Points and Summary – The P-61 Black Widow was America’s first purpose-built night fighter, a heavily armed, twin-engine aircraft equipped with revolutionary airborne radar.
-Conceived after witnessing the London Blitz, the P-61 was designed to hunt enemy aircraft in the dark. Despite its large size, it was surprisingly maneuverable and packed a heavy punch with four 20mm cannons and four .50-caliber machine guns.
-Although its late arrival in World War II limited its overall impact, the Black Widow proved its worth in both the European and Pacific theaters, successfully downing numerous enemy aircraft and V-1 flying bombs.
P-61 Black Widow, Death Awaits In The Dark
The P-61 Black Widow was a capable but ultimately underutilized night fighter during World War II.
While it was the first US aircraft designed specifically for night combat and possessed advanced features like radar, it arrived late in the war. It faced challenges in speed and maneuverability compared to newer Allied and Axis fighters.
The US Army saw the need for a night fighter during “The Blitz” in London in the fall of 1940, more than a year before the US entered the war.
S. Army Air Corps Lt. Gen. Delos C. Emmons was in London during several German Luftwaffe night raids on London.
He saw the need for an American night fighter and spoke to his Chief of Experimental Aircraft Projects, Col. Lawrence C. Craigie.
In late-October 1940, Craigie relayed the orders to Northrop’s chief of research, Vladimir H. Pavlecka, on the need for an aircraft capable of carrying devices “that would locate aircraft in the dark.” Airborne radar was still in its infancy.
The P-61 Was The First Dedicated Night Fighter
Pavlecka’s design of the prototype XP-61 used a twin boom fuselage that supported a central pod carrying a three-person crew consisting of a pilot, a gunner to operate a power turret, and a radar specialist. During the war, publications referred to the radar operator as a “radio observer” to keep our enemies in the dark as to the radar.
The XP-61 was huge for a fighter. It was as large as the B-25 Mitchell and B-26 Marauder medium bombers, and Northrop would require powerful engines to make the Black Widow a fighter with speed.
Northrup chose two 18-cylinder Pratt & Whitney R-2800 air-cooled radials that could each make about 2,000 hp. These engines lacked turbosuperchargers, and this caused performance to suffer at high altitudes.
The P-61 was purpose-built for night operations, incorporating features like radar (SCR-720) and a distinctive black paint with red trim scheme for stealth. That is where the P-61 got its name from.
Unfortunately, the P-61 didn’t arrive overseas until late January 1944. And the newly formed 422nd Night Fighter Squadron (NFS) was the home of the Black Widow.
However, the Black Widow didn’t fly its first combat mission until July 6, 1944. Ten nights later, the 442nd NFS got its first air-to-air kill, a V-1 flying Bomb headed for London. The 442nd would shoot down eight more V-1s during the war. When the 425th NFS arrived in Europe, the US used it as a night fighter bomber attacking German ground targets.
Pacific Theater Success
In the Pacific, crews in the 6th NFS in Hawaii and the 419 NFS on Guadalcanal were the first to fly Black Widows. Pilots of the 6th NFS achieved the first victory over an aerial opponent by anyone flying a P-61 (Moon Happy) when they shot down a Mitsubishi G4M Betty bomber on the night of June 30, 1944, over Saipan.
On July 7, 1944, a P-61 crew in the 421st NFS based in New Guinea shot down a Japanese twin-engine Mitsubishi Ki-46 Dinah reconnaissance airplane.
During five days in December 1944, crews flying Black Widows shot down eight Japanese aircraft. As in Europe, when Japanese night flights became scarce in late 1944, Black Widow crews began to fly more ground interdiction missions.
For ground missions, the P-61 mechanics installed HVAR rockets and four 165-gallon tanks. External fuel tanks extend mission endurance to as much as eight hours when pilots throttle the engines back to the most economical power setting.
P-61’s Powerful Armament
The P-61 was heavily armed with four 20-mm (.79 in) Hispano M2 forward-firing cannon mounted in the lower fuselage, and four .50 in (12.7 mm) M2 Browning machine guns mounted in a remote-controlled dorsal gun turret, making it a potent threat to any enemy aircraft.
However, the P-61’s late arrival would limit the impact of the aircraft. The P-61 entered service in significant numbers too late to be an essential factor in the overall war effort.
The P-61 was credited with 53 manned aircraft kills and downing 9 German V-1 Buzz Bombs in the European Theater, five manned aircraft in the Mediterranean Theater, 64 manned aircraft in the Pacific Theater, and five more aircraft in the China-Burma-India Theater. A total of 136 enemy aircraft were shot down during the war.
Speed and Maneuverability
Some critics argued that the P-61 was not fast enough or as maneuverable as some other contemporary fighters, especially when compared to newer, faster Allied and Axis aircraft. The top speed for the P-61 was 366 mph.
However, the P-61 was surprisingly maneuverable for a large, twin-engine night fighter, especially considering its size and weight.
It was designed with features like slotted flaps and spoiler ailerons that improved handling, particularly at lower speeds and during takeoff and landing from shorter airstrips.
While not as fast as some single-engine fighters, it was considered very maneuverable, even compared to some single-engine types. Some even claimed it could out-turn a Mosquito. The official history of the US Army Air Forces (USAAF) described the P-61 as its “most maneuverable fighter”.
However, one drawback was the aircraft’s climb rate.
The P-61 had a relatively slow climb rate, particularly at higher altitudes, which could be a disadvantage in certain combat situations.
The P-61 Black Widow gained its fame in its role as America’s first dedicated night fighter. While it may not have been the fastest or most agile fighter of the war, its radar, armament, and twin-engine design made it a formidable weapon against enemy aircraft at night.
Its impact was limited by its late arrival and some design limitations, but it remains a notable example of American engineering and innovation during WWII.
At night when day fighters were sleeping,
The nocturnal raids were begun.
And the heavens were sore split asunder,
By the roar of our P sixty-ones.
—from The Night Fighter’s Lament, author unknown. In Jeff Kolln, The 421st Night Fighter Squadron in World War II (Schiffer 2001). For a more detailed look at the P-61 and its history both during and after the war, be sure to check out Russell Lee’s outstanding two-part piece for the Smithsonian Air and Space.
About the Author: Steve Balestrieri
Steve Balestrieri is a National Security Columnist. He served as a US Army Special Forces NCO and Warrant Officer. In addition to writing on defense, he covers the NFL for PatsFans.com and is a member of the Pro Football Writers of America (PFWA). His work was regularly featured in many military publications.
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