SNECMA Atar

SNECMA Atar 9C

The SNECMA Atar is a French axial-flow turbojet engine built by Snecma Moteurs. It was derived from the German World War II BMW 003 design. The engine was developed in 1945-1947 and first tested in April of 1948. SNECMA Atar is a single-shaft turbojet with a 9-stage axial-flow compressor and a 2-stage turbine with or without afterburner.

[edit] Versions

Atar 101 - used in Dassault Super Mystère fighter-bomber
Atar 8 - two-stage turbine and improved compressor, non-afterburning, developed in 1954-1956.
- Atar 8B - used in Dassault Étendard IV
- Atar 8K-50 - simplified non-afterburning version of Atar 9K-50 for Dassault Super Étendard
Atar 9 - integrated starter, improved compressor optimized for supersonic flight, afterburner.
- Atar 9C - used in Dassault Mirage III and 5 fighters
- Atar 9K-10 - improved combustion chamber, turbine blade cooling; used in Dassault Mirage IV bombers
- Atar 9K-50 - improved Atar 9C with a redesigned turbine and upgraded compressor resulting in improved fuel consumption and thrust; used in Dassault Mirage F1 and Mirage 50.
Atar Plus - joint development with ITP and Denel, new compressor, new turbine, new electronics.

Thrust:
- 42.0 kN (9,440 lbf) military power
- 58.9 kN (13,240 lbf) with afterburner
Overall pressure ratio: 5.2:1
Specific fuel consumption:
- 103 kg/(kN·h) (1.01 lb/(lbf·h)) military power
- 207 kg/(kN·h) (2.03 lb/(lbf·h)) with afterburner
Thrust-to-weight ratio: 40.5 N/kg (4.1:1)

Thrust:
- 49.2 kN (11,060 lbf) military power
- 70.6 kN (15,870 lbf) with afterburner
Overall pressure ratio: 6.5:1
Specific fuel consumption:
- 98.9 kg/(kN·h) (0.97 lb/(lbf·h)) military power
- 199.9 kg/(kN·h) (1.96 lb/(lbf·h)) with afterburner
Thrust-to-weight ratio: 44.6 N/kg (4.6:1)