Is there any version of CFM56 with can combustors?

Question

This lamp is sold online:

They claim it's made from a CFM56 combustion chamber. It looks like a can combustor, and I read everywhere that CFM56 uses an annular combustor.

Is there a version of CFM56 with can combustors?

• If yes: is this lamp look like one?
• If not: from what engine the body of that lamp would be from?

Answer 1

In short

It's the flame tube of an individual can of a cannular combustor, a mix between can and annular combustors. The can may come from auxiliary power unit turbine or a JT8D powering older Boeing 737 and MD-80 or an . It cannot be from a CFM56, all models use annular combustors.

The three main types of combustors:

Source.

All types are approximately to the same scale, meaning an individual can of a can or a cannular combustor is much smaller than an annular combustor.

The can of the lamp support has interconnectors, pipes used to connect the cans.

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Details

Recent Boeing 737 and Airbus A320 can use different engines:

• CFM56 models -3B, -5A, -5B, -7B,
• IAE V2500,
• PW1100G,
• LEAP

All have annular combustors, single fuel nozzle (SAC) or dual fuel nozzle (DAC) for NOx reduction. However older versions of Boeing 737, -100 and -200, used a JT8D engine with 8 cannular combustors, the beast you got. In cannular type, the individual combustion zones share a common annulus casing:

Source.

Detail of a combustor:

Source.

The part making the lamp support is the flame tube (liner) of the combustor. The external air casing has been removed. I wasn't able to identify the exact version of the combustor, there has been multiple improvements over time on the JT8D, a famous engine, still used today.

More information about turbofans (pdf).