Wsk-mielec M-15 Belphegor Shopping
M-15
 

Information About

Wsk-mielec M-15 Belphegor




The M-15 Belphegor is a Jet Agricultural Aircraft , manufactured by WSK-Mielec in Poland for the USSR agricultural aviation. It was the only jet Biplane and only jet agricultural plane in the world.


Development

The aircraft was designed in Poland in response to a Soviet requirement for a new agricultural plane to use on great areas of the Soviet collective farms ( Kolkhoz and Sovkhoz ), more modern and efficient than the Antonov An-2SKh And An-2R . Poland had already produced the agricultural Antonow An-2R under licence for export back to the USSR, and agricultural planes became a Polish specialization in the Comecon . The Soviet side insisted on using a Jet Engine in a new plane, and also participated in the design process.

In order to research new problems connected with using the jet engine on a slow agricultural biplane, first an experimental plane Lala-1 for Latajace Laboratorium 1 ( Pl . Flying Laboratory 1) was built in Poland and flown on February 10 , 1972 . It used the whole front part of an An-2, with wings, while the rear part was cut off and replaced with a frame construction, housing jet engine. The Lala-1 was equipped with agricultural devices. Its tests helped to design the M-15.

The first variant of the M-15 was flown on May 30 , 1973 , and the second prototype on January 9 , 1974 . During the next few years it was intensively tested, along with a pre-production series. The M-15 was shown at the Paris Air Show in 1976 , where it was nicknamed the " Belphegor " due to its strange look.

Serial production started in 1976 . Soviet agriculture planned to order as many as 3,000 aircraft, but the first experiences of M-15 service were disappointing. The jet agricultural plane was not economical, and the production ceased in 1981 after building 120 aircraft. It was used in the USSR only.


DESCRIPTION

Metal Twin-boom Biplane , with a jet engine over the crew cab. Part of lower wings and chemicals tanks were made of a Laminate to avoid Corrosion . Upper and lower wings were connected with two thick columns, housing chemicals' tanks, 1450 l (377 US gal) each. Fixed Tricycle Landing Gear . The crew was a pilot; two technicians could be carried if necessary. The M-15 was fitted with spraying and dusting gear, powered with compressed air.


SPECIFICATIONS(M-15)

''The data in different sources vary a bit''
  plane Or Copter plane
  jet Or Prop jet
  crew 1
  capacity two passenger, and up to 2,900 l (770 US gallons) or 2,200 kg (4,850 lb) of chemicals
  length Main 1272 m
  length Alt 41 ft 9 in
  span Main 2233 m
  span Alt 73 ft 3 in
  height Main 534 m
  height Alt 17 ft 6 in
  area Main 679 m&2
  area Alt 731 ft&2
  empty Weight Main 3,270 kg
  empty Weight Alt 7,209 lb
  loaded Weight Main kg
  loaded Weight Alt lb
  max Takeoff Weight Main 5,570 kg
  max Takeoff Weight Alt 12,280 lb
  engine (jet) Ivchenko AI-25
  type Of Jet jet
  number Of Jets 1
  thrust Main 3,300 lbf
  thrust Alt 148 kN
  max Speed Main 200 km/h
  max Speed Alt 125 mph
  range Main 480 km
  range Alt 300 miles
  ceiling Main 4,500 m
  ceiling Alt 14,760 ft
  climb Rate Main 270 m/min
  climb Rate Alt 886 ft/min
  loading Main kg/m&2
  loading Alt lb/ft&2




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