"The aircraft took off as a bi-plane, flew out over the sea with an RAF Hudson flying escort,
jettisoned the upper wing, and returned to land safely at Squires Gate as a monoplane."
Hawker Hurricane Mk1 with extra wings A) Hillson FH.40 biplane, actually a Hawker Hurricane Mk1 with extra wings on the top,
helps to increase lift when taking off, and will be discarded when the aircraft needs more speed.
A) Slip-Wing Hurricane /-/ B) “Slip-Wing Fighter” B) During 1940 and the Battle of Britain, Hillson became interested in the concept of a “Slip-Wing Fighter,”
essentially a monoplane fighter fitted with a jettisonable additional upper wing. This would give
the aircraft the short take-off and climb capability of a bi-plane as well as the speed of a monoplane
once the extra wing had been jettisoned,.