Main Menu

Apis Sailplanes Apis

apis2
Apris 2


The Apis series includes both a 13- and 15-meter sailplane, is a combination of composite construction and old world craftsmanship. The Apis is intended for the sport flyer, but still holds several world records. They offer a forward-hinged canopy, automatic control hookups, in-flight adjustable rudder pedals, full-span flaperons, blended winglets, and Schempp-Hirth type airbrakes. They also make the Apis M, a 15-meter motorglider.

The Apis 2 is built with CFRP technology with 15 m span and T-tail. The wings are a multi trapezoid with raising tips. Aileron and flaps are interconnected (flaperons) and standard SH airbrakes give short landing approaches.


The spars are connected with two bolts in tongue/tongue technique. Rigging is straight forward and can be easily accomplished by one person. The glider fits in a standard sailplane trailer. The large canopy opens to the side and allows easy access to the ergonomic and roomy cockpit.


The Apis 2 includes a parachute rescue system. Wearing a pilots parachute is therefore not necessary and allows tall pilots to fit in the Apis 2.


The Apis 2 has a large canopy that opens to the side. The back-board can be adjusted continuously, the rudder pedals have some detents, and both can be readjusted during flight. The electric starter button and the throttle are located in the arm rest on the left side. The panel offers space for six instruments with 57 mm diameter in addition to the ECU indicator. One of these six can be replaced by a 80-mm-instrument alternatively. The battery fits into the quick-release rack in the fuselages nose. It energises both the ECU and the instruments.


The Apis 2 cockpit is made up of a double hull. The lightweight hollow section frame of the canopy offers a maximum stiffness in this area.
The Apis 2 takes off under its own power as a self launch glider. Despite the fixed tailwheel it is easy to control on the ground. Two aerodynamic tip wheels help eliminate the need for a wing runner. The Apis 2  has a fixed gear with a wheel brake on the 4" wheel.


After a short roll only climb rate is about 2.5 m/s (4.8 kt) at a speed of 80 to 85 km/h (45 kt). After about 150 m (500 ft) it will be airborne and it takes about 290 m (950 ft) over the 50 ft obstacle.


There is almost no trim change flying under engine or in gliding mode or while extending or retracting the engine. The camber changing flaps with a neutral trim will give you a speed range of 80 km/h (43 kt) at +9° to 160 km/h (86 kt) at -6°.


Thermal speed is about 80 km/h (43 kt) and minimum sink is 0.6 m/s (115 fpm). Best glide speed is 95 km/h (52 kt) which will give you a L/D of 39. Landing approach is at 90 km/h (48 kt) with positive flaps. The highly efficient airbrakes allow safe and steep approaches into short airfields. The Apis 2 can be landed with retracted or with extended engine.


The Apis 2 powerplant is an aircooled single cylinder Hirth F33 with intake and exhaust silencer. It generates 27 hp from 303 cc. The 148 cm ground adjustable carbon fibre propeller has been developed by Martin Wezel specially for the Apis 2. The noise level of the Apis 2 is at 57.7 db(A).


The powerplant is retractable. The process is controlled by ECU (Engine Control Unit) an instrument by TL elektronic. The extension of the powerplant is started by switching on the main switch, then the ignition. The ECU then takes over the process and the pilot can start the engine with the starter button. It is not necessary to manually control fuel valve or a choke lever. The ECU is optimizing the engine according to the temperature. During the retraction procedure for the powerplant the ECU is activating the propeller stop as soon as the RPM allows. Then the ECU is controlling the full procedure until the engine is completely stowed away.
The whole process takes about 20 seconds.


German certification in the Ultralight category was issued on 4 September 2003.

Apis 2
Span: 15 m
Wing area: 12.4 sq.m
Aspect ratio: 18.2
Length overall: 6.5 m
Empty weight: from 210 kg
Max. gross weight: 320 kg
Max. load factor: +5.3 / -3.3 g
L/D: 39 at 95 km/h (52 kt)
Min. sink rate: 0.6 m/s at 80 km/h (43 kt)
Flap settings: +9°, +5°, 0°, -3°, -6°
Stall: 35 kt / 40 mph / 65 kmh
Cruise: 81 kt / 93 mph / 150 kmh
VNE: 200 km/h (108 kt)
Engine: Hirth F 33 B, 27 PS / 19.3 kW
Carburetor: Mikuni membrane carburetor
Drive: Poly-V-belt 1:2.5
Propeller: Wezel 2-blade CFRPØ 1.48 m
Fueltank: 14 liter
Fuel consumption while climbing: 9 l/h
Noise level: 57.7 dB(A)

Apis 15M

Cruise: 51 mph
Stall: 36 mph
Aspect Ratio: 17-1
L/D: 40:1
Min sink: 115 fpm
Empty weight: 327 lb
Gross weight: 661 lb
Length: 20.6 ft
Wing span: 49.2 ft
Wing area: 132 sq.ft
Cockpit width: 32 in
Landing gear: tailwheel
Seats: 1

Apis M
Cruise: 56 mph
Stall: 36 mph
Aspect Ratio: 17-1
L/D: 40:1
Min sink: 115 fpm
Engine: Rotax 447, 40 hp
Fuel cap: 3.5 USG
Empty weight: 445 lb
Gross weight: 710 lb
Length: 20.6 ft
Wing span: 49.2 ft
Wing area: 132 sq.ft
Cockpit width: 32 in
Landing gear: tailwheel
Seats: 1

Apis Electric Self-Launch
Cruise: 51 mph
Stall: 36 mph
Aspect Ratio: 18.35-1
L/D: 40:1
Min sink: 108 fpm
Engine: Brushless DC, 13 kW
Empty weight: 452 lb
Gross weight: 710 lb
Length: 20.6 ft
Wing span: 49.2 ft
Wing area: 132 sq.ft
Cockpit width: 32 in
Landing gear: tailwheel
Seats: 1

 

 


Copyright © 2017 all-aero. All Rights Reserved.
Joomla! is Free Software released under the GNU General Public License.