Initial Nozzle Design

The most critical part of the wind tunnel is the nozzle, it must accelerate the flow to the desired Mach number while leaving the test section free of shock waves. The two methods I have used have been a numerical technique to create the geometry and later on I'll use computational fluid dynamics (CFD) to... Continue Reading →

Supersonic Wind Tunnel part 1

  Previously I had mentioned the use of water flow to simulate supersonic flow, however after having done some research I've abandoned this approach for now in favour of building a supersonic wind tunnel. The main reason for this is I'd like to some investigation on combustion stability at the small scale I want to... Continue Reading →

Solid Fuel Regression Part 2..

So in this second of my posts on solid fuel grain regression I'll cover more complex grain core shapes, although the process is not overly dissimilar to the methods discussed previously. An average web length is found and an incremental distance is then defined, this distance is then used to regress each point of the... Continue Reading →

Solid Fuel Regression Part 1

In the first of a series on the modelling of rocket motors I'm going to cover the aspects of the design of the solid propellent grain, which is the hardened mass of combustible propellent within the motor itself. Solid fuel rocket motors range from the model rocket motors produced by the likes of Estes with their... Continue Reading →

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