As above. It’s about wing ribs

Interesting, she speaks well, I hope you are proud.

I am. Thanks

Good talk, not too long and we’ll presented. Thnaks.

Your family is far too interesting Ampthill 🙂

I’m all for additive parts where there is a genuine benefit – size, shape, unusual hollow features, prototypes etc. I hate it when they are used “just because”.

The local uni made a big song and dance about some ventilator adaptors they printed for the hospital. Only a simple thing and took many hours to make each one, but it looked like a lathe could have knocked them out in minutes.

Very interesting topic. I first saw some Titanium printed parts around 8-10years who but they were very difficult to finish machine as they were very abrasive. I was also involved with another machining company that tried to develop a new business for printed parts, but couldn’t make it work.

#Like

Whilst this is right up my street (thanks), the fact you are trying to sell your sister is a concern. Not sure I’d get much for mine.

I’ll give that a watch – I love a ted talk me!

Advise her that the next time she delivers, that it might be better to focus on a different component or, if committed to wing ribs, to use an A350 outboard wing rib made from titanium as the focal point. It’s very, very difficult to make a decent business case for aluminium components as the ££/kg is so tiny and the machining rate for aluminium is so high, that AM really cannot compete unless it’s for a low number of specialist parts. For aluminium wing ribs where there are over 50 per aircraft and 7000 aircraft to produce they do not fall into this category. Forged, machined, titanium and inconel parts make the most sense.

TED talk buy by sister on additive manufacture

Whilst this is right up my street (thanks), the fact you are trying to sell your sister is a concern. Not sure I’d get much for mine.

You misinterpreted the misspelling, he’s really embarrassed by his sister’s performance and meant to type “bye bye sister”. Not “Buy my sister”

If @ampthill meant “Buy my sister” obviously he would have specified, price, general condition, number of previous owners and posted in the classified 🙂

It’s very, very difficult to make a decent business case for aluminium components as the ££/kg is so tiny and the machining rate for aluminium is so high, that AM really cannot compete unless it’s for a low number of specialist parts

As I understand it no additive manufacture parts are licenced for use in aircraft. Or if they are its quite token.

The case made here wasn’t cost but environmental impact and design freedom

They certainly are in use. In 2018 GE surpassed 30,000 additively manufactured fuels nozzles produced for the CFM LEAP (a common single isle aircraft engine). You’re reasonably likely to have been taken on a European holiday by AM fuel nozzles.

Other companies are making AM bearing housings etc (structural components within engines) for use in land based gas turbines. The primary reason behind this is the relatively low production volumes making AM make financial sense. Once the cost catches up with casting (not far off) then AM will take over for these components too.

On the finishing front – have you seen a titanium casting being chemically machined (a routine process in aerospace)? Not a pretty or healthy process (although I do admire it, especially the selective depth used on some thin walled structures).

Edited to clarify AM use for GE fuel nozzles

They certainly are in use. In 2018 GE surpassed 30,000 additively manufactured fuels nozzles produced for the CFM LEAP (a common single isle aircraft engine)

Small world. Her husbands field is combustion including nozzles and fuels