資料を探すと2種類の尾翼の機種が両方ともXP-56となっていますが、これでいいんでしょうか？
だれかおしえて！
Northrop XP-56 "Black Bullet"
Type: single-seat fighter Crew: 1 Armament: four .50 cal machine guns in the nose two 20mm cannon in the nose Specifications: Length: 27' 6" Height: 11' 0" Wingspan: 42' 6" Wing area: 306 sq. ft Empty Weight: 8700 lb Max Weight: 12,145 lb max at takeoff Propulsion: No. of Engines: 1 Powerplant: Pratt & Whitney R-2800-29 18-cylinder Horsepower: 2000 hp Performance (manufacturer's estimates): Range: 445 miles Cruise Speed: N/A Max Speed: 465 mph at 25,000 ft Ceiling: 33,000 ft