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The McDonnell PJ40 was a pulsejet engine built by McDonnell Aircraft during the mid 1940s.

McDonnell PJ40
XPJ40-MD-2 on Katydid target drone
Type	Pulsejet
National origin	United States
Manufacturer	McDonnell Aircraft
First run	1942
Major applications	McDonnell TD2D Katydid

Variants and applications

XPJ40-MD-2

McDonnell TD2D Katydid[1]

Specifications (XPJ40-MD-2)

Data from NASM[1]

General characteristics

• Type: Pulsejet
• Length: 71.5 inches (1,820 mm)
• Diameter: 7.5 inches (190 mm)
• Dry weight:

Components

• Compressor: None
• Fuel type: Petrol

Performance

• Maximum thrust: 660 lbf (2,900 N)
• Power-to-weight ratio:

References

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