PZL.27
P.Z.L. 27 | |
---|---|
P.Z.L. 27 prototype | |
Role | Airliner / Mail-plane |
Manufacturer | P.Z.L. |
Designer | Zbysław Ciołkosz[1] |
First flight | September 1934[1] |
Status | prototype only |
Primary users | LOT Polish Airlines (P.L.L. - Polskie Linie Lotnicze LOT S.A.)[1] Polish Air Force |
Number built | 1[1] |
The P.Z.L. 27 was a prototype airliner/mail plane designed by Zbysław Ciołkosz and constructed at P.Z.L. in 1933.[1]
Design and development
Ordered by the
Technical design
Construction of the P.Z.L. 27 consisted of a welded steel tube fuselage and tail-unit covered with fabric and a wooden 2-spar wing. Three 130 hp (97 kW)
Operational history
After initial flight testing the prototype P.Z.L. 27 the aircraft was returned to P.Z.L. to have a revised wing fitted to alleviate problems with insufficient stiffness and poor lateral stability. After a second phase of testing a
After accumulating 70 hours flying with LOT, the P.Z.L. 27 was bought by the Polish Air Force for the I.T.L. (Instytut Techniczny Lotnictwa - Technical Aviation Institute). It was used for transport, but crashed in an accident near Piaseczno in 1937, when piloted by Andrzej Włodarkiewicz.[2]
Operators
- LOT Polish Airlines operated the sole prototype.
- Polish Air Force
Specifications (P.Z.L. 27)
Data from Polish Aircraft 1893-1939.[1]
General characteristics
- Crew: 2
- Capacity: 5
- Length: 10.74 m (35 ft 3 in)
- Wingspan: 13.6 m (44 ft 7 in)
- Height: 2.52 m (8 ft 3 in)
- Wing area: 25.2 m2 (271 sq ft)
- Empty weight: 1,470 kg (3,241 lb) (fully equipped, including radio)
- Gross weight: 2,320 kg (5,115 lb)
- Powerplant: 3 × de Havilland Gipsy Major I4-cyl. inverted in-line air-cooled piston engine, 97 kW (130 hp) each
- Propellers: 2-bladed Szomański wooden, fixed pitch
Performance
- Maximum speed: 266 km/h (165 mph, 144 kn) at sea level
- Cruise speed: 238 km/h (148 mph, 129 kn)
- Range: 700 km (430 mi, 380 nmi)
- Service ceiling: 4,800 m (15,700 ft)
- Rate of climb: 4.6 m/s (910 ft/min)
- Time to altitude: 1,000m in 3min 37s
- Wing loading: 92.5 kg/m2 (18.9 lb/sq ft)
- Power/mass: 0.125 kW/kg
See also
Aircraft of comparable role, configuration, and era
- RWD-11
References
- ^ ISBN 0-370-00085-4.
- ^ Morgała 2003, p.310
- Morgała, Andrzej (2003). Samoloty wojskowe w Polsce 1924–1939 [Military aircraft in Poland 1924–1939] (in Polish). Warsaw: Bellona. ISBN 83-11-09319-9.