Northrop X-4

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Northrop X-4 Bantam
Northrop X-4 "Bantam"
Northrop X-4 "Bantam"
Type: Experimental airplane
Design country:

United StatesUnited States United States


Northrop Corporation

First flight:

December 16, 1948

Number of pieces:


The Northrop X-4 Bantam was a jet-powered, brushless experimental aircraft produced by the US manufacturer Northrop Corporation . The research program was led by the National Advisory Committee for Aeronautics (NACA), forerunner of NASA .

The aircraft was a single-seat swept wing (wing arrow 41.5 °) without a horizontal stabilizer . It was 7.10 m long, had a wingspan of 8.18 m and a maximum take-off mass of 3550 kg. It had a retractable tripod and an ejection seat. It was powered by two Westinghouse J30 WE 9 jet engines with 7.1 kN static thrust each. The air inlets were in the wing roots. The maximum speed at high altitude was Mach 0.89.

Two copies of the X-4 were built. The first flight took place in 1948. In 1954 the program was discontinued.

Three-sided view of the Northrop X-4 "Bantam"

Technical specifications

Parameter Data
crew a pilot
length 7.1 m
span 8.2 m
height 4.5 m
Maximum take-off mass 3550 kg
Empty mass 2540 kg
Top speed 1035 km / h
Service ceiling 13,400 m
Engines Two Westinghouse J30 jet engines with 7.1 kN thrust each

See also

Web links

Commons : Northrop X-4  - collection of images, videos and audio files

Individual evidence

  1. Description on p. 10. (PDF; 1.2 MB) Retrieved on January 11, 2013 .