I know one F1 team when in Melbourne this year received 3D printed Titanium+ parts from Titomic which is in Melbourne. There 3D printing process can lay up metals of differing melt temperatures and very low porosity 0.3% and fast @ 70kg Ti6AL4V an hour, including Inconel, copper, stainless, and metalised plastics if need be. Producing a very large rocket for GIlmore Space Systems in around a week. So the possibilities are now endless it's cheap as it uses irregular morphology powders which are about 1/5 the price.MHR650 wrote: ↑27 Apr 2020, 19:13The vast majority of turbine wheels are made from Inconel, until you get above 1000C, there are a few alloys that allow higher temperatures but are heavier than Inconel. It is possible, if it is allowed by the rules, that they are using Titanium Aluminide turbine wheels, those have great temperature resistance and are very light, but are very difficult to work with.
No way they are using Titanium compressor wheels, we only use those on a few heavy-duty diesel applications where the durability improvements are worth the performance loss due to the higher weight. Compressor wheels are made from aluminum or possibly aluminum lithium alloys.
I'm wondering the same.Jolle wrote: ↑03 May 2020, 16:06Is weight really a problem for the current formula? I mean for the compressor wheel itself. The wheel probably has quite a steady RPM of 125.000 and spun up if asked for by a quite powerful electric motor. A few grams have almost no gain in performance while it becomes more durable.
I don’t see much room to use the H as some kind of flywheel to store energy, as there is the limit of 125.000 rpm. The moment you want the K energised again, there is also air demand for the ICE.sosic2121 wrote: ↑08 May 2020, 09:33I'm wondering the same.Jolle wrote: ↑03 May 2020, 16:06Is weight really a problem for the current formula? I mean for the compressor wheel itself. The wheel probably has quite a steady RPM of 125.000 and spun up if asked for by a quite powerful electric motor. A few grams have almost no gain in performance while it becomes more durable.
Having turbo with higher inertia could be an advantage when bypassing 4/2MJ rules.