Ronald Hatcher

Ronald Hatcher

Technologist, Architect, Space Enthusiast

United Kingdom Rocketry Association

East Anglian Rocketry Society



This build is based on the old Rocketry Warehouse (now from Madcow Rocketry) 5.5" kit with some modifications. There is a 6" diameter equivalent that Madcow still sell. The included instructions are sparse but - to be fair - if you need detailed instructions for a kit of this type then it’s probably not the right kit for you.


The Black Brant II was a very successful sounding rocket produced by the Canadian Armament Research and Development Establishment (CARDE) beginning 1960. This is my build of a 5.5" diameter model of the three fin version.

Midland Sky 2021

First flight was at the Midland Sky 2021 event in Twycross. My youngest son managed to get some great video of the launch Photos by Ben Jarvis Photos by Peter Barrett

User Journeys

Views and descriptions of the key user journeys

User Interactions

Views and descriptions of users interacting with UKRA

Technology View

Views and descriptions of the technology context



Tools, calculations and information all about ejection

Open Source Rover

Open Source Rover

The JPL Open Source rover is an open source, build it yourself, scaled down version of the 6 wheel rover design that JPL uses to explore the surface of Mars. I have recently completed the build of this rover, which was rally a challenge!



White Sands V2 rockets The White Sands V-2 Launching Site, or Launch Complex 33, was developed specifically to accommodate V-2 rocket tests at the White Sands Missile Range in New Mexico.