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The Marquardt MA-74 was a ramjet engine built by the Marquardt Corporation for use in supersonic target drones in the 1960s.

Marquardt MA-74
Type	Ramjet
National origin	United States
Manufacturer	Marquardt Corporation
Major applications	North American MQM-42

History

The MA-74 was developed by Marquardt for use as a powerplant for high-speed target drones;[1] its primary use was in the North American Redhead and Roadrunner.[2] A nacelle-type ramjet, it used a normal shock inlet, and was designed to be mounted on top of the aircraft; fuel was ordinary JP-4.[1]

Variants and applications

MA-74-ZAB

North American MQM-42[1]

Specifications (XPJ40-MD-2)

Data from Haggerty 1966[1]

General characteristics

• Type: Ramjet
• Length: 90.7 inches (2,300 mm)
• Diameter: 16.5 inches (420 mm)
• Dry weight: 110 pounds (50 kg)

Components

• Compressor: None
• Fuel type: JP-4

Performance

• Maximum thrust: 1,790 lbf (8,000 N)
• Thrust-to-weight ratio: 16.3

References

Citations

Bibliography

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