The Rally is the latest
state-of-the-art in aircraft design. It can be powered with a 100 Hp
engine and constant speed prop to give a 140 mph cruise while
carrying 2 tall adults and considerable baggage. This aircraft is
highly stable with exceptionally good handling characteristics, a
gentle stall, and very short takeoff and landing distances. It is an
ideal training aircraft because of these characteristics.
The Rally is a two-place, high wing, single strut-braced aircraft.
There are 2 available wings in either metal or composite. For the
metal wing, the primary structure consists of an aluminium spar and
aluminium ribs with the upper, lower, and leading edge aluminium
skins completing the torsion box. The latter feature provides an
aerodynamically clean surface for the airfoil. This design increases
performance and helps to reduce maintenance and repair costs. The
composite wing has a similar structure with all the primary
components being composite except for the attachment fittings. The
fuselage section is formed by variations of Kevlar, Carbon and
Glass-fibre laminates. Over the years S. G. Aviation has used many
types of composite materials owing to their capability to form
compound curves necessary for the reduction of drag. This type of
construction is rapidly becoming the industry standard in this
category of aircraft.
S. G. Aviation has considerable and varied
experience in composite construction. Our designs ensure strength
and stiffness fors all environmental conditions. The use of advanced
composites permits complex aerodynamic shapes that would be
impossible in aluminium and they can maintain exact airfoil contours
and surface finishes that provide the high levels of laminar flow
available on advanced airfoils. These composites are not subject to
rot, rust, or corrosion. They can be tailored to distribute loading
from or concentrate loading into structural hard points. Composite
fibres have a near infinite fatigue life and the fibres used are
nearly three times the strength of steel. A rugged central spar
supports the wing strut and landing gear loads.
The tailplane provides remarkable longitudinal hands-off stability
and control with minimum drag and weight. A wide trim-tab provides
effective trim capability for all flight conditions. The vertical
fin is of all composite structure. The electric Fowler flaps reduce
the stall speed to less than 35mph. The ailerons are very efficient,
which results in an aggressive roll rate. The differential
deflection of the ailerons reduces adverse yaw eliminating the need
for rudder in turns.
The aluminium leaf main gear legs provide excellent shock
absorption. Wheels and hydraulic disc brakes are of the aircraft
type. Toe brakes provide positive steering control. The parking
brake is controlled through a pressure lock valve. The steerable
nose wheel was designed to resist high impact loads and is suitable
for flight school training.
The engine is set low and the cowling slopes down from the
windshields to provide excellent forward visibility. The side
windows provide for 300 degrees of visibility and the windshield
provides for excellent visibility overhead when the pilot leans
forward. The cabin is 43 inches wide with ample head room. Many tall
people are amazed at the roominess of the cockpit. In fact, the
cockpit easily accommodates a 6’ 4” man and still provides
sufficient head clearance. The large luggage area behind the seats
has sufficient room for 2 jump seats for children. Of course, this
area can store considerable amount of luggage.
The control stick has considerable movement and is connected to the
controls via push-pull rods, rod ends, and well-designed cable
routing. A rocker switch between the seats controls the pitch trim.
Aileron and rudder trim are optional. The instrument panel has
sufficient space to allow for installation of VFR and IFR panels.
Cabin ventilation is provided by ram air. A defrost system is
available as well.
The engine compartment is easily accessible allowing for quick and
thorough ground inspections and maintenance.
The Rallys’ performance, handling, stability, and safety has been
developed over ten years of intensive research and development by
experienced and qualified aeronautical engineers.
Rotax 100 hp 3 Blade C/S prop
Blade C/S prop
23 ft 2 in
30 ft 1 in
124.96 sq ft
682 – 790 lbs
22 - 34 US gal
rate of climb
landing distance, ground roll
limiting and recommended speeds
design manoeuvring speed (Va)
never exceed speed (Vne)
stall, power off (Vsl)
landing approach speed
All specifications are based on manufacturer's