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The final Northrop flying wing design,
although it could more accurately be
described as a tailless aircraft, was the
XS-4 Skylancer, a transonic research
vehicle with two 726kg thrust
Westinghouse turbojets. Later redesignated
X-4, the first of two aircraft flew at
Muroc on 15 December 1948, followed
by the second on 7 June 1949. With a
span of only 8.18m and
weight of 3175kg, the two
X-4s completed their research programme
in April 1954 and both survive as
museum exhibits.
| MODEL | X-4 "Bantam" |
| CREW | 1 |
| ENGINE | 2 x Westinghouse turbojets, 726kg each |
| WEIGHTS |
| Take-off weight | 3175 kg | 7000 lb |
| DIMENSIONS |
| Wingspan | 8.18 m | 26 ft 10 in |
| Length | 7.1 m | 23 ft 4 in |
| Wing area | 19 m2 | 204.51 sq ft |
| PERFORMANCE |
| Max. speed | 1000 km/h | 621 mph |
 | A three-view drawing (524 x 527) |
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