The Thomas-Morse MB-3 was an open-cockpit biplane fighter primarily manufactured by the Boeing Company for the U.S. Army Air Service in 1922. The MB-3A was the mainstay fighter for the Air Service between 1922 and 1925.
The Consolidated P-30 (PB-2) was a 1930s United States two-seat fighter aircraft. An attack version called the A-11 was also built, along with two Y1P-25 prototypes and YP-27, Y1P-28, and XP-33 proposals. The P-30 is significant for being the first fighter in United States Army Air Corps service to have retractable landing gear, an enclosed and heated cockpit for the pilot, and an exhaust-driven turbo-supercharger for altitude operation.
The Boeing XP-15 was an American prototype monoplane fighter.
The PZL P.1 was a Polish fighter, designed by the engineer Zygmunt Puławski, manufactured by the PZL state-owned factory. It remained a prototype, but it was the first of the Polish PZL gull wing fighter series, leading to the PZL P.7, PZL P.11 and PZL P.24.
The Bristol Bullfinch was an experimental British military aircraft first flown in 1922. Variants were built as both parasol wing monoplanes and biplanes, but both versions proved unsuccessful, and only the three prototypes were built.
The Curtiss R3C was an American racing aircraft built in landplane and floatplane form. It was a single-seat biplane built by the Curtiss Aeroplane and Motor Company.
The Navy-Wright NW series, also called the Mystery Racer were racing aircraft built by Wright Aeronautical Corporation at the request of the US Navy. Although innovative, both prototype racers were lost before achieving their true potential.
The Orenco D was an American biplane fighter aircraft, designed by Orenco and built by Curtiss Aeroplane and Motor Company. It was the first fighter type of completely indigenous design to enter US military service.
The Thomas-Morse MB-2 was an open-cockpit biplane fighter manufactured by Thomas-Morse Aircraft for the U.S. Army Air Service in 1918.
The Thomas-Morse MB-6 was an American racing aircraft built by Thomas-Morse Aircraft for the US Army Air Service.
The Thomas-Morse MB-7 was an American racing plane built by Thomas-Morse Aircraft for the US Navy.
The Northrop XFT was an American prototype fighter aircraft of the 1930s. A single engined low-winged monoplane, it was designed and built to meet a United States Navy order for an advanced carrier based fighter. It exhibited poor handling, and was rejected by the Navy, the single prototype being lost in a crash. A variant, the Northrop 3A, also was unsuccessful.
The Verville VCP was an American single-engined biplane fighter aircraft of the 1920s. A single example of the VCP-1 was built by the United States Army Air Service's Engineering Division, which was later rebuilt into a successful racing aircraft, while a second, modified fighter was built as the PW-1.
The PWS-11 was a Polish aerobatic and trainer aircraft, developed in 1928-1929 by PWS, which remained a prototype.
The Thomas Morse MB-9 was an experimental American fighter aircraft of the 1920s. It was a single-engined, single-seat parasol winged monoplane, but was unsuccessful, being quickly abandoned.
The Vought V-141 was a prototype American single-seat fighter aircraft of the 1930s. It was a development of the unsuccessful Northrop 3-A design, but was itself a failure, being rejected by the United States Army Air Corps. The sole prototype was sold to the Japanese Army in 1937, but no production followed, with the type proving to be inferior to existing Japanese fighters.
The Curtiss Model 22 Cox Racers were two specialised racing aircraft built by the American Curtiss Aeroplane and Motor Company. The type was flown as a monoplane, biplane and triplane.
The Mitsubishi 1MF10 or Mitsubishi Experimental 7-Shi Carrier Fighter (七試艦上戦闘機) was a prototype Japanese monoplane single-seat carrier-based fighter aircraft of the 1930s. Two were built for the Imperial Japanese Navy, but both were lost in crashes, with no production following.
The Thomas-Morse TM-24 was a prototype American two-seat observation aircraft of the 1920s. A single example was built in 1925, but no production followed.
The Thomas-Morse MB-1 was an open-cockpit monoplane fighter manufactured by Thomas-Morse Aircraft for the U.S. Army Air Service in 1918.
