GENERAL FLYING
10. Stability and control
(i) This aeroplane is stable. With metal covered ailerons
the lateral control is much lighter than with the
earlier fabric covered ailerons and pilots accustomed
to the latter must be careful not to overstress the
wings. Similar care is necessary in the use of the
elevators which are light and sensitive,
(ii) For normal cruising flight the radiator shutter should
be in the minimum drag position.
(iii) Change of trim
Undercarriage down - nose down
Flaps down - nose down
(iv) Maximum range is obtained with WEAK mixture,
1,700 r.p.m. and at 160 m.p.h. A.S.I.R.
(v) Maximum endurance is obtained with WEAK mixture,
1,700 r.p.m. and at the lowest speed at which the
machine can be comfortably flown.
(vi) For combat manoeuvres, climbing r.p.m. should be used.
(vii) For stretching a glide in the event of a forced
landing, the airscrew speed control should be pulled
right back and the radiator flap put at the minimum
drag position.
STALLING
11. (i) At the stall one wing will usually drop with flaps
either up or down and the machine may spin if the
control column is held back.
(ii) This aeroplane has sensitive elevators and, if the
control column is brought back too rapidly in a
manoeuvre such as a loop or steep turn, stalling
incidence may be reached and a high-speed stall
induced. When this occurs there is a violent shudder
and clattering noise throughout the aeroplane, which
tends to flick over laterally and, unless the control
column is put forward instantly, a rapid roll and
spin will result.
(iii) Approximate stalling speeds when loaded to about
6,250 lb. are:-
Flaps and undercarriage UP 73 m.p.h. A.S.I.R.
" " " DOWN 64 " "
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