Grob ASTIR CS 77 User Manual

height loss is about ?Om (230ft) per revolution. The recovery speed about 160km/h
(86kt).
The execution of aerobatics and flight conditions, which
would give negative loading,
are not permitted.
Advanced aerobatic manoeuvres are
likewise illegal.
Spinning
With the centre of gravity between 415 and 480mm aft of datum, the glider can be held
in a spin. The control stick must be held fully back, and the rudder and aileron controls
crossed to full deflection. The glider spins in the direction of the rudder deflection and
with rearward centre of gravity positions
will settle into a constant rate spin with a slow
rotation speed and a flat fuselage attitude.
Recovery from the spin does not require
critical control movement. It is sufficient to
release the backpressure on the stick and at nearly all centre of gravity positions and
wing
loading the glider will return to normal flight.
A more rapid recovery (without further turning of the
glider) is achieved if all controls
are returned to the
central position. The height loss up to the recovery from the spin is
approximately 70 meters (230ft) per revolution.
The glider can be held within the flight envelope at all certified positions of the centre of
gravity and
flying weights. With full up elevator, crossed aileron and rudder control, at
rearward positions of the centre of gravity; the
glider will enter a spin. This can be
terminated quickly by centralising all controls.
Immediate recovery is achieved by the "standard recovery method":
1.
Apply opposite rudder against the direction of the spin
2. Pause
3. Ease the control column forward until the rotation ceases and the airflow is
restored.
4.
Centralise the rudder and pull gently out of the resulting dive.
During the high-speed recovery, pay attention to keeping the airspeed within the
permitted range.
Avoid
large control deflections at high speeds.
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Grob ASTIR CS 77 Specifications

General

Brand	Grob
Model	ASTIR CS 77
Category	Aircrafts
Language	English