|Prototype S45 Mystere landing at Lachute Airport in 2004|
|Role||Two-seat homebuilt monoplane|
|First flight||16 November 1996 (S44)
4 October 2001 (S45)
|Status||Kits no longer available|
The Partenair Mystere is a Canadian two-seat, pusher configuration monoplane that was designed by Partenair Design of Saint-Jean-sur-Richelieu, Quebec and intended for amateur construction from kits.
Design and development
The Mystere is an all-composite, low-wing monoplane powered by a pusher piston engine. It has a pod and boom configuration with a T-tail and a fixed tricycle landing gear with wheel pants. The cockpit has room for two occupants in tandem with dual controls and a two-piece canopy and windscreen.
The prototype S44 Mystere first flew on 16 November 1996 powered by a Rotax 912 engine. The second prototype S45 was powered by a 160 hp (119 kW) Lycoming IO-320 flat-four piston engine and first flew on 4 October 2001.
- S44 Mystere
- Initial 80 hp (60 kW) Rotax 912UL powered version. Empty weight 700 lb (318 kg) and gross weight 1,250 lb (567 kg), cruise speed 140 mph (225 km/h). The price of the complete S44 kit, including engine in 1999 was US$38,000. Only one prototype was flown.
- S45 Mystere
- Second version with increased power. Acceptable power range 100 to 160 hp (75 to 119 kW), with the standard engine a Lycoming O-320 of 150 hp (112 kW). Kit price in 2003, without engine, was US$27,900. Only one prototype was flown.
- S45 Mystere Mark II
- Third version with aerodynamic refinements, an increase in top speed to 180 mph (290 km/h) and an increase in gross weight to 1,925 lb (873 kg). The engine was raised so that the aircraft could accept a larger diameter propeller and to increase clearance between the tail boom and the propeller. The engine cowling was also re-shaped to smooth airflow into the propeller. These changes were all to reduce the original S45's noise signature. Kit price in 2003, without engine, was US$27,900. Only one prototype was flown and it was the original S45 prototype in a modified Mark II configuration.
- S45 Mark III RG
- A proposed retractable gear model that was never built. The Mark III was announced by the company in 2003, with a first flight initially forecast for 2004. It was intended to have a shorter wing and accept engines up to 250 hp (186 kW) to greatly increase cruise speed.
Accidents and incidents
The prototype Partenair S44 Mystère was involved in a fatal accident on 24 October 1998. While departing Montréal/Les Cèdres Airport, the Rotax 912 engine failed and the aircraft impacted the ground, killing both occupants.
This accident led to the aircraft being redesigned as the S45 with a Lycoming O-320 engine replacing the Rotax powerplant. Kitplanes magazine described the subsequent S45 as a "repowered aircraft for better overall performance and reliability".
- Crew: 2
- Length: 7.32 m (24 ft 0 in)
- Wingspan: 7.13 m (23 ft 5 in)
- Height: 2.44 m (8 ft 0 in)
- Wing area: 9.94 m2 (107.0 sq ft)
- Airfoil: root: NACA 65-218, tip: NACA 65-215
- Empty weight: 522 kg (1,151 lb)
- Max takeoff weight: 861 kg (1,898 lb)
- Fuel capacity: 55 U.S. gallons (210 L; 46 imp gal)
- Powerplant: 1 × Lycoming IO-320 flat-four piston engine, 120 kW (160 hp)
- Propellers: 3-bladed PAC metal propeller
- Cruising speed: 274 km/h (170 mph; 148 kn)
- Stall speed: 89 km/h (55 mph; 48 kn)
- Never exceed speed: 338 km/h (210 mph; 183 kn)
- Range: 1,852 km (1,151 mi; 1,000 nmi)
- Rate of climb: 8.6 m/s (1,700 ft/min)
- Newby-Gonzalez, Tori: 2004 Kit Aircraft Directory, Kitplanes, Volume 20, Number 12, December 2003, page 71. Belvoir Publications. ISSN 0891-1851
- Jane's Information Group (2009). "Delastek S45 Mystere (Canada), Aircraft - Fixed-wing - Civil". Retrieved 24 December 2011.
- Transport Canada (11 November 2015). "Canadian Civil Aircraft Register". Retrieved 11 November 2015.
- Jackson 2003, p. 67
- Downey, Julia: 2002 Kit Aircraft Directory, Kitplanes, Volume 18, Number 12, December 2001, page 57. Kitplanes Acquisition Company. ISSN 0891-1851
- Downey, Julia: 1999 Kit Aircraft Directory, Kitplanes, Volume 15, Number 12, December 1998, page 61. Primedia Publications. ISSN 0891-1851
- Downey, Julia: 2001 Kit Aircraft Directory, Kitplanes, Volume 17, Number 12, December 2000, page 65. Kitplanes Acquisition Company. ISSN 0891-1851
- Aero News Network (24 July 2003). "Partenair Announces Third Model". Retrieved 24 December 2011.
- Aviation Safety Network (2011). "Occurrence # 23492". Retrieved 24 December 2011.
- Lednicer, David (2010). "The Incomplete Guide to Airfoil Usage". Retrieved 24 December 2011.
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