Pratt & Whitney/Allison 578-DX

Model 578-DX
Type Propfan
National origin United States
Manufacturer Pratt & Whitney / Allison Engine Company
First run 1986



The Pratt & Whitney/Allison 578-DX was an experimental aircraft engine, a hybrid between a turbofan and a turboprop known as a propfan. The 578-DX was developed as a joint venture between Pratt & Whitney and Allison. Unlike the competing General Electric GE-36 UDF, the 578-DX was fairly conventional, having a reduction gearbox between the LP turbine and the propfan blades. Noise considerations, plus a significant reduction in the real cost of aviation fuel, brought the NASA funded program to a halt.

The engine was tested with 11.6 ft propfans in 1989 on a modified MD-80.[1]

Specifications

Data from Air Progress

General characteristics

Components

Performance

See also


Comparable engines
Related lists

References

  1. Air Progress: 30. August 1989. Missing or empty |title= (help)

External links


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