Mailing List Message #67373
From: Doug Lomheim <>
Subject: Re: [FlyRotary] Fun with AI for the rotary
Date: Fri, 3 Feb 2023 06:53:18 -0600
To: Rotary Motors in Aircraft <>
So where can we find the proposed “specialist in exhaust systems” that it suggests?  For our applications that would probably be someone on this list!?     :)



Designing a muffler for a Mazda rotary engine requires taking into account several factors, including:

  1. Engine specifications: The muffler must be compatible with the size and output of the engine.
  2. Noise reduction: The muffler should reduce engine noise to an acceptable level, while also allowing the engine to function efficiently.
  3. Performance: The muffler should not restrict exhaust flow and impact engine performance.
  4. Durability: The muffler must be durable and withstand the high temperatures and vibration generated by the rotary engine.

A muffler design for a Mazda rotary engine could include a straight-through perforated core, surrounded by sound-deadening materials such as fiberglass or ceramic wool. The muffler should be mounted using flexible connections to reduce vibration and ensure a secure fit. Additionally, heat shields could be used to protect the muffler from high temperatures.

These are general guidelines and the exact design may vary based on specific engine and performance requirements. Consulting with a specialist in exhaust systems is recommended to ensure a muffler that is optimized for your specific engine and application.

You're welcome. 

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