How JAXA, the Japan Aerospace Exploration Agency, Designed their Rocket Engine Turbopump?

At the present time, Stepanoff’s design methodology based on empiricism using an experimental database is still widely used in pump design.

This design is so popular because based on his experimental investigation of the correlations between many design parameters and pump performance he “strongly suggested” that the optimum blade exit angle was 2β = 22.5 degrees. It is true that designers using Stepanoff’s method can design pumps that demonstrate moderate performance with very cheap design costs.

These facts along with a rich experimental database make this method attractive as a standard design methodology. However, it is also true that Stepanoff’s method can not be applied to breakthrough designs beyond the design range he originally tested.

 

7 LOX turbopumpLE-7 LOX turbopump

 

 

“TURBOdesign1 is an intelligent design tool, which gives us fresh insight into the fluid dynamics of the flow through the pump stage”.

 

 

Read the Case Study

Book a LIVE demo on the design of a turbomachinery application of your choice.

Our demo is tailored to your specific application and design challenges

Book a Demonstration

Mehrdad Zangeneh

Mehrdad Zangeneh is Founder and Managing Director of Advanced Design Technology and professor of Thermofluids at University College London.

View All Articles

MORE ON THIS TOPIC

Optimization of a Mixed Flow Pump

In the first part of this article on the design and analysis of a high specific speed mixed flow pump, we showed that there is a complex trade-off...

Design of a Mixed Flow Pump

Mixed-flow pumps are widely used at drainage pumping stations, power plants and in water-jet applications. When the specific speed is high, the...

Sirocco Fan: Manual Redesign of Impeller Wheel and Volute

In the first part of this article on the design of a Sirocco fan stage, we showed that there is scope for improvement in the baseline impeller...