The young people came from University Technical Colleges, whilst some apprentices came from defence firms.
Eaton apprentice Sam Forster said:
"I've enjoyed the camaraderie really with getting to know things, and being able to design it yourself - it's been really good."
Danny Sutton WMG Academy for Engineers, Coventry said:
"So it's been really helpful in the STEM area; I've been able to use lots of different machines that I wouldn't be able to usually.
"I've done lots of CAD modelling, I've done lots of other stuff like that, all in this one project which has done really well."
"The whole thing's been a learning exercise because we have had to change things and design things from scratch, and work as a team to get it done before today, and it's just been really tough but the challenge has been fun", said Liam Bullard from Peterborough University Technical College.