Engine (Двигатель) The prototype of airplane is driven by Trabant auto conversion with 120x70 (48"x27.5") propeller fitted directly on the crankshaft. The Trabant engine is good choice for SD-1 due to its robustness, high reliability, low consumption and cost.
Serial airplanes are till now driven by Hirth F-33 AS, F-23 AS and B&S Vanguard 22 HP engines. It is possible to use any engine of 22-50 HP power range up to 40 kg (89 lbs) weight. This criterion fulfil e.g. Hirth 2702, Simonini Victor 1, 2SI 460 F, 1/2 VW etc.
Fuel system (Топливная система)
The integral tank of 28 l (7.4 US gal.) capacity is placed behind fuselage firewall. It is made of fiberglass-PVC foam sandwich. The Mikuni pump is connected to crankcase. The auxiliary electric pump is placed on the firewall.
Electrical system (Электрика)
The bus is juiced by battery and is charged by alternator integrated in electronic ignition. It is possible to place 12 V outlet under instrument panel for GPS etc.
Instruments (Приборное оборудование)
The airplane is fitted with basic flying instruments-speedometer, altimeter, compass and vario. The RPM´s, total hours, head and exhaust gas temperatures are checked on the engine. There is place for COM transceiver with installing diameter of 57 mm in the instrument panel. The COM antenna is built in the airframe. The transponder could be placed to the socket on the cockpit floor.
Rescue system (Спасательная система)
The prototype airplane is equipped with rescue system GRS 4/270. The container of system is attached on fuselage bulkhead behind pilot´s back. The front ropes are attached on upper engine mount hinges. The auxiliary rope is attached to fuselage behind cabin.
It is possible to use also other systems in serial version. If is used light engine is possible to mount rescue system on the firewall. It is possible to built airplane without rescue system.
Specifications
Performance
*valid for plane equiped with Hirth F-33 AS (28 HP) engine, without rescue system
** Hirth F-33 AS engine
***Hirth F-33 AS engine and propeller 120x95 (48x37.4)
