Motorlet M-701

M-701
Motorlet M701 turbojet engine (displayed at the Aviation Museum in Košice, Slovakia)
Type	Turbojet
National origin	Czechoslovakia
Manufacturer	Motorlet
First run	1958
Major applications	Aero L-29 Delfín
Produced	1961-1989
Number built	more of 9,250 [1]

The Motorlet M-701 is a Czechoslovakian jet engine. It was used to power the Aero L-29 Delfín jet trainer, with about 9,250 engines built between 1961 and 1989.

Development and design

In 1955, the Czechoslovakian aero-engine company Motorlet commenced design of a new turbojet engine to power the Jet trainer being designed by Aero for a competition to equip all Warsaw Pact air forces, the Aero L-29. The resulting design, designated Motorlet M-701 was a single shaft centrifugal turbojet and was the first jet engine designed in Czechoslovakia (although Motorlet had previously built the Klimov VK-1 under license).^[2]

The engine number 4th. was tested at special flying laboratory at IL-28 at December 1959. ^[3]

The engine was first run in 1958, and engine number 8th. powered the third prototype L-29 when it flew in 12.JUL 1960 (the first two prototype had flown the previous year powered by a Rolls-Royce Viper). The L-29 was selected as the winner of the competition, and was ordered in large numbers, with the M-701 entering production at Jinonice near Prague in 1961. By the time production ended in 1989, more of 9,250 had been built.^[3]

Applications

• Aero L-29 Delfín

Specifications

From: Jane's All the World's Aircraft 1971-72 ^[4]

General characteristics

• Type: Single shaft centrifugal turbojet engine
• Length: 2,067 mm (81.38 in)
• Diameter: 896 mm (35.28 in) (Max width): Max height 928 mm (36.53 in)
• Dry weight: 330 kg (728 lb)

Components

• Compressor: Single-stage centrifugal
• Combustors: 7 straight flow combustion chambers
• Turbine: Single-stage axial-flow with 61 blades

Performance

• Maximum thrust: 8.75 kN (1,962 lbf) (Take-off power -15,500 rpm), 7.87 kN (1,764 lbf) (Rated power - 14,950 rpm)
• Overall pressure ratio: 4.3:1
• Air mass flow: 19.6 kg/s (37.25 lb/s)
• Specific fuel consumption: 1.14 (at rated power)
• Thrust-to-weight ratio: 2.7:1 (0.026 kN/kg)

See also

Related lists

• List of aircraft engines

References

• Taylor, John W R (editor) (1971). Jane's All The World's Aircraft 1971-72. London: Sampson Low. ISBN 0-354-00094-2. 

External links

Wikimedia Commons has media related to Motorlet M701.