PZL M28 Skytruck

https://en.wikipedia.org/wiki/PZL_M28_Skytruck

The PZL M28 Skytruck is a Polish STOL light cargo and passenger plane, produced
by PZL Mielec, as a development of license-built Antonov An-28. Early
licence-built planes were designated PZL An-28. The maritime patrol and
reconnaissance variants are named PZL M28B Bryza ("sea breeze").

The Antonov An-28 was the winner of a competition against the Beriev Be-30 for a
new light passenger and utility transport for Aeroflot's short haul routes,
conceived to replace the highly successful An-2 biplane. The An-28 is derived
from the earlier An-14. Commonalities with the An-14 include a high wing layout,
twin fins and rudders, but it differs in having a reworked and longer fuselage,
with turboprop engines. The original powerplant was the TVD-850, but production
versions are powered by the more powerful TVD-10B, with three-blade propellers.

The M28 is a twin-engined high-wing strutted monoplane with an all-metal
airframe, twin vertical fins and a tricycle fixed landing gear. If an engine
fails, a spoiler forward of the aileron opens automatically on the opposite
wing. This limits the wing drop to 12° in five seconds instead of 30°.

It is capable of Short takeoff & landing (STOL) and hot and high altitude
operations. Aerodynamically deployed leading edge slats when approaching stall
speed enable a 64 kn (119 km/h) low stall speed and while the certification
landing field is 1,640 ft (500 m), PZL has demonstrated landing in 512 ft (156
m). Inlet air ducts inertial separators and inverted configuration of the PT6
and the high wing configuration protect the engines and propellers against
foreign object damage for unprepared runways operations.

Role
STOL transport and patrol aircraft

Manufacturer
PZL Mielec

Design group
Antonov/PZL Mielec

First flight
22 July 1984 (PZL An-28)
24 July 1993 (PZL M28 Skytruck)

Status
In production, In active service

Primary users
Polish Air Force
Polish Navy
Venezuelan Army
United States Air Force

Produced
1984-1993 (PZL An-28)
1993- (PZL M28 Skytruck)

Number built
176+ (including PZL An-28)

Unit cost

US$6.5-7 Million


Developed from
Antonov An-28

176 An-28s and M28s in all variants were built in Poland by 2006. Most numerous
users are former Soviet civil aviation and the Polish Air Force and Navy (about
25 as of 2006), smaller numbers are used by the Polish civil aviation and in the
United States, Nepal, Colombia, Venezuela, Vietnam and Indonesia.

On 4 November 2005, a Vietnamese Airforce M28 crashed in Gia Lam district,
Hanoi. All three crewmembers were killed.

On 12 February 2009, The weekly periodical Air Force Times reported that the Air
Force Special Operations Command (AFSOC) would receive 10 PZL M28 Skytrucks in
June 2009. These aircraft carry the U.S. Air Force model design series (MDS)
designation of C-145A Skytruck. In 2011 one aircraft crash landed in Afghanistan
and was damaged beyond repair.

Specifications (PZL M28)

General characteristics
Crew: 2
Capacity: 19 passengers (17 paratroopers)
Payload: 2,300 kg (5,070 lb)
Length: 13.10 m (43 ft)
Wingspan: 22.06 m (72.38 ft)
Height: 4.90 m (16.08 ft)
Wing area: 39.72 m² (427.5 ft²)
Empty weight: 4,354 kg (9,601 lb)
Max. takeoff weight: 7,500 kg (16,534 lb)
Fuel capacity: 1,766 kg / 3,894 lb, 2,278 l / 602 US Gal
Cabin Length × Width × Height: 5.26 × 1.73 × 1.72 m / 17.25 × 5.66 × 5.63 ft
Powerplant: 2 × Pratt & Whitney Canada PT6A-65B turboprops, 820 kW (1,100 shp)
each

Performance
Maximum speed: 355 km/h (192 kts)
Cruise speed: 244 km/h (132 kts) long range
Stall speed: 120 km/h (65 kts) MTOW
Range: 1,592 km (860 NM) 10,000 ft, 45 min. reserve
Endurance: 6.2 hrs (10,000 ft, 45 min. reserve)
Service ceiling: 7,620 m (25,000 ft)
Rate of climb: 12.29 m/s (2,420 ft /min)

Take-off: 548 m / 1,800 ft
Landing: 499 m / 1,640 ft
Fuel Consumption: 268 kg/h / 591 lb/h (10,000 ft)





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