PART IV-HANDLING
(c) The position of the airbrakes or the presence of external
stores makes no noticeable difference to the stalling
characteristics.
(d) In a steep turn warning of a stall is given by elevator
buffeting which occurs immediately before the stall. At
the stall the aircraft may drop a wing suddenly.
-----------------------------------------------------------------
Page 52 70. Spinning
Para 70
A.L.3 (a) Intentional inverted spinning is prohibited and is unlikely to occur
unless the stick is forcibly held forward. An accidental spin from
inverted flight will usually be an erect spin. Practice erect spinning
is permitted up to four turns. The minimum recommended entry
height is 25,000 feet A.G.L.
(b) To ensure positive entry into the spin, yaw in the required direction
should be induced at about 115 knots, i.e. slightly in excess of the
stalling speed, by applying full rudder and stick hard back. The
elevator trimmer should be neutral.
(c) With the stick held fully back and full rudder applied, the aircraft
will then spin or flick roll for one or two turns before adopting a
nose-down attitude. For several turns there is marked yawing and
pitching with variations in the rate of rotation. After about four
turns a further steepening in attitude occurs accompanied by a
reduction of the yawing and pitching tendencies and an increase in
the rate of rotation.
(d) The standard spin recovery action is :-
(i) Check throttle closed and aircraft clean.
(ii) Confirm that roll (determined visually) and yaw (as indicated
by the Turn needle are in the same direction.
(iii) Apply full rudder to oppose the yaw.
(iv) Pause.
(v) With the ailerons neutral move the stick steadily forward
until the spin stops. This may require full forward movement
of the stick.
(vi) Centralise all controls immediately the spin stops.
(vii) Recover to normal flight.
(e) If the roll and yaw are in opposite directions (i.e. the spin is inverted):
(i) Apply full rudder to oppose the yaw.
(ii) Pause.
(iii) With the ailerons neutral move the stick steadily backward
until the spin stops. This may require full backward movement
of the stick.
(iv) Centralise all controls immediately the spin stops.
(v) Recover to normal flight.
Both erect and inverted spins will sometimes continue for one or two
turns after full recovery action has been taken. If the aircraft fails
to recover after three turns with full standard spin recovery action
applied, carry out the following supplementary spin recovery
actions:- 52
|