RemSchetMash Robust

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RSM-15 Robust
Role Ultralight
National origin Ukraine
Manufacturer RemSchetMash jsc, Druzhkivka
First flight 2006
Number built 1?

The RemSchetMash RSM-15 Robust is a single-seat, single-engine ultralight built in Ukraine. It first flew in 2006 but no production aircraft had been produced by late 2009.

Design and development[edit]

The RemSchetMash Robust is the only aircraft built to date by this general manufacturing company. It has a high wing of constant chord, without flaps. The wings are braced by single struts to the lower fuselage. This is a carbon fibre monocoque with a starboard side door for access to the single-seat cockpit. A conventional tricycle undercarriage is mounted on the fuselage with spring steel cantilever legs bearing the mainwheels. The rear underside of the fuselage tapers upwards to the tail, where a constant chord tailplane carries a single piece elevator between two endplate fins. The fins and rudders are parallel edged but with rounded tips, the rudders noticeably less deep than the fins.[1]

The Robust is powered by a German 41 kW (55 hp) Hirth 2703 twin-cylinder in-line two-stroke engine, driving a three-blade propeller via reduction gearing.[1]

The prototype Robust, serial LA-0872, first flew in 2006. As with some other Ukrainian ultralights, e.g. the Lilienthal Bekas, agricultural spraying was seen as a possible role, but no further aircraft appear to have been built.[1][2] An enlarged version, the RSM-25 Bekas, has been considered. This would have a span increased to 11.40 m (37 ft 5 in), a maximum take-off weight of 495 kg (1,091 lb) and be powered by a 60 kW (80 hp) Volkswagen 2300 engine.[1]


Data from Jane's All the World's Aircraft 2010/11[1]

General characteristics

  • Capacity: 1
  • Length: 5.47 m (17 ft 11 in)
  • Wingspan: 8.94 m (29 ft 4 in)
  • Height: 1.72 m (5 ft 8 in)
  • Wing area: 10.60 m2 (114.1 sq ft) gross
  • Airfoil: TsAGI R-III 16%
  • Max takeoff weight: 340 kg (750 lb)
  • Powerplant: 1 × Hirth 2703 2-cylinder in-line air-cooled two-stroke with 1:2.59 reduction gear, 41 kW (55 hp)
  • Propellers: 3-bladed, 1.645 m (5 ft 5 in) diameter


  • Maximum speed: 200 km/h (124 mph; 108 kn) at sea level
  • Cruise speed: 180 km/h (112 mph; 97 kn)
  • Stall speed: 65 km/h (40 mph; 35 kn)
  • Never exceed speed: 250 km/h (155 mph; 135 kn)
  • Range: 1,000 km (621 mi; 540 nmi) with 7% reserves
  • g limits: +6/-3
  • Rate of climb: 7.0 m/s (1,380 ft/min) at sea level


  1. ^ a b c d e Jackson, Paul (2010). Jane's All the World's Aircraft 2010-11. Coulsdon, Surrey: IHS Jane's. pp. 612–3. ISBN 978-0-7106-2916-6. 
  2. ^ Partington, Dave (2010). European registers handbook 2010. Coulsdon, Surrey: Air Britain (Historians) Ltd. p. 614. ISBN 978-0-7106-2916-6. 

External links[edit]