To meet the rising demand for environmentally quiet (light) aircraft engines, CKT have approached this need since 2001 by designing heat resistant exhaust systems compatible with limited space available and achieving low noise levels demanded by the Regulatory Authorities and Military customers.

 To date we have directed our design and manufacturing for the Rotax 900 series market, with some 1100+ units in operation servicingtwelve airframe makers with O.E. exhaust systems.We are now receiving requests from other engine manufacturers to assist with their exhaust requirements, including Wankel-type Rotary Engine manufacturers. We have recently received enquiries for annular exhausts for the flying-donut-type MAV’s.

Within the scope of our service, customers supply us with the necessary firewall forward components to which we attach an appropriate engine and determine the most satisfactory position for the choice of silencer. De-coupled and free-flowing exhaust Downpipes are ”modelled” to meet “fit and function”.

Once this basic engineering is completed individual fixtures are prepared and tube-bending programmes concluded to ensure accurate repeatability for production units.  The prototype is then developed and tested for operation in line with the customer’s noise reduction requirements. Test graph results printouts of Dba’s from our Computer System are supplied along with graphs of engine back pressure over the customers pre-determined rpm range. These ground-runs’ results, usually without Propeller but fitted to our dynamometer  isolate the Exhaust-only noise.

The “first-off” exhaust system is then submitted to our customer for final checking.In keeping with industrial practise we need to recover development costs, which vary depending upon complexity. This is usually a three-stage process. We receive the customer’s requirements and time frame for development. Next, Prototype and Pre-production testing. Finally, into production.

Our Exhausts in most cases use the CKT muffler design, records a noise ratingof 75 dBA according to CAA/EASA regulations.  The newly developed, rotary engine exhaust and silencer contains some new and unique features. Rotary engines are notoriously noisy, and starting at 110Dba with the manufacturers exhaust/silencer assembly, we are now down to 88Dba, backpressure of around 20 Millibars at 7000rpm and no power loss! Our customer is very pleased.

With 30 years design and manufacturing experience with Design work we place ourselves at your disposal and remain confident we can spare our customers the often the often unfamiliar engineering task of exhaust system preparation.