TURBO ANALYSIS & COMBUSTION CHAMBER DESIGN:

               I used the Jet Specs Turbo Analysis software from the following link  http://www.ivcity.com/turbosoft/

          This software gives approximate estimation of some parameters of the turbocharger turbojet. It also provides combustion chamber and flame tube dimensions for the engine. Most DIY turbines use large combustors allowing for proper fuel combustion thereby achieving low exhaust temperature. Commercial gas turbines have fairly small but efficient combustors. However they are more difficult to design .The above softwares only provide dimensions for a large combustor .Since this is my first time I have decided to stick with the proven design.

Here are some screenshots of the software with my turbo's data

          

TURBOCHARGER SELECTION

THE TURBOCHARGER:

The principle criteria for turbo selection is cost since there will be more costs involved in other parts of the engine .It is better to obtain a good condition used turbocharger .The second criteria is that when it comes to turbochargers for jet engine conversion projects the rule is always the bigger the better. This is because small turbochargers tend to have low turbine efficiencies and mismatched compressor-turbine which is not good for jet engine conversion.The other important criteria is that the turbo should not have a waste gate and it should preferably have a non-divided turbine inlet.

TURBOCHARGER CUT SECTION                             

        The turbo I could find was the Holset HX40 that I found in a used parts market .The turbo was in good condition but needed to be cleaned and lubed for use. However my turbo unfortunately has a divided turbine inlet .I have decided to go ahead with this turbo because it is very hard to find a good used turbo in the used market .I had to reject a lot of turbos with broken blades and other problems till I obtained this.

PREPARING THE TURBOCHARGER:

COMPRESSOR COVER REMOVED

COMPRESSOR

TURBINE

TURBOCHARGER PARTS

PROJECT 2

TURBOCHARGER TURBOJET ENGINE

               The objective of this project is to build a mini turbojet engine using an automotive turbocharger.

 An automotive Turbocharger Uses a Compressor to provide a pressure boost to an engine by increasing the pressure of the air entering the engine’s air inlet .The exhaust from the engine is routed via a turbine in the turbocharger which harvests energy and uses it to run the compressor .This mechanism can be used to make a turbojet engine if the automotive engine is replaced by a gas turbine combustion chamber and by fitting a nozzle to the turbine’s exhaust .

CONCEPTUAL DESIGN: