Honeywell_TSCP700

Honeywell TSCP700

Honeywell TSCP700

Small turboshaft

Honeywell TSCP700 is a small turboshaft, used as auxiliary power unit on wide-body airliners.

Power output shaftLP compressorHP Compressor
Technical drawing. Air Intake is on the left

Origin and use

It was initially developed by Garrett AiResearch, for use as an APU for McDonnell Douglas DC-10.[1] Garrett was merged into AlliedSignal in 1985, then into Honeywell in 1999. Honeywell still provide support for the TSCP700's in circulation. Besides the DC-10, it is also used as APU on the MD-11 and Airbus A300/A310.[2]

Design

TSCP700 provides a mechanical output of 105 kW (for TSP700-5 version used on Airbus aircraft).[2] It has a two-shaft architecture. The compressor design is quite peculiar, as the LP compressor is axial and the HP compressor is centrifugal. After the HP compressor, air is fed to a combustion chamber, and blown through two turbines. The first high-pressure turbine drives the HP compressor and provides the "useful" output (driving, e.g., a power generator), while the second, low-pressure turbine drives the LP compressor shaft.[3]

Derivative

A small geared turbofan named Garrett TFE731 was developed from TSCP700, borrowing its internal parts. It was successfully marketed for business jets and military trainer aircraft.[1]

References

  1. [1]
    "Life Ahead For TFE731 As Honeywell Plans Upgrade At 50th Anniversary | Aviation Week Network". aviationweek.com.
  2. [2]
    "EASA.A.172 - Airbus A300, A310 and A300-600". EASA.
  3. [3]
    Malohn, Donald A. (1 February 1970). "TSCP700 Auxiliary Power Unit for the DC-10 Aircraft": 700815. doi:10.4271/700815. {{cite journal}}: Cite journal requires |journal= (help)
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