| Two prototypes of a new fighter, the D 513, were
ordered in 1935 as part of the 1934 C1 programme, the
first of these being flown on 6 January 1936. Featuring
semi-elliptical horizontal and vertical surfaces, with a
wing of relatively high aspect ratio, an Hispano-Suiza
12Ycrsl engine with a frontal radiator similar to that of
the D 503, and inward-retracting main undercarriage
members, the D 513 proved disappointing during initial
trials. It suffered serious instability and attained a
maximum speed of only 425km/h at 4600m. Radical redesign followed, the wing and tailplane
being mated to an entirely new fuselage, vertical
tail surfaces, elevators and undercarriage, the frontal
radiator giving place to a deep radiator bath beneath
the nose. In this definitive form, the D 513 still proved incapable of meeting specified performance, a shortcoming
which, compounded by continuing instability
and difficulties with both engine cooling and undercarriage
retraction, led to the discontinuation of development.
The second prototype was fitted with an HS
12Ydrs2 engine rated at 930hp at 990m, and
undercarriage and radiator a la D 503, and was
employed for high-speed parachute launching trials as
the D 514 LP.
 | A three-view drawing of In this much-modified definitive form the D 513 still proved unsatisfactory (800 x 507) |
MODEL | D 513 in its definitive form |
WEIGHTS |
Take-off weight | 2446 kg | 5393 lb |
DIMENSIONS |
Wingspan | 12.06 m | 40 ft 7 in |
Length | 7.45 m | 24 ft 5 in |
Wing area | 18.32 m2 | 197.19 sq ft |
PERFORMANCE |
Max. speed | 445 km/h | 277 mph |
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