The first thing that caught my eye in the image attached to the article was the use of modular aluminum extruded structual members. While these are perfect for a prototype, one has to think about how much they contribute to the 1.5 ton weight savings. Would a production generator of this design use aluminum for its support structure (Not just modular elements as shown, but purpose-built structure)?
The question is why it even weighs a ton much less saving 1.5tons!!?
A 150HP alum diesel, a 3ph 100kw alt/ ACProulsion EV motor/ inverter and a 10kwhr, 200kw peak A123 Litium battery pack would weight 1200lbs and use 50% or less fuel using stock componants on am alum or composite skid/casing available 15 yrs ago or more except the batteries .
The challenge of any generator system is not just in making it lightweight and efficient, but more in making it durable and reliable. The abuse of being hauled off road must be seen to be understood. And the abuse suffered while "running under fire" is a lot worse than that. IT would be interesting to see another photo of that system package after one mile off-road at 45 MPH.
The sad reality is that, just like race cars, reliability is vital, and a broken generator is not very useful. And unfortunately, most of the time durability equates to more weight.
I had a similar thought when looking at the description and the picture. I like the variable speeds and load following features, as well as the towable off-road ruggedness. It looks like a good candidate for mountain living.
Jerry, as William alluded to in his post, the cause of the weight is its ruggedness. For a miliatry application this would go way beyond what you would expect for commercial or industrial applications. It's not just off-road. It's WAY off-road and pretty much needs to be built for, or have add-ons for, the most extreme environments imaginable. All of this adds weight.
A slew of announcements about new materials and design concepts for transportation have come out of several trade shows focusing on plastics, aircraft interiors, heavy trucks, and automotive engineering. A few more announcements have come independent of any trade shows, maybe just because it's spring.
Samsung's Galaxy line of smartphones used to fare quite well in the repairability department, but last year's flagship S5 model took a tumble, scoring a meh-inducing 5/10. Will the newly redesigned S6 lead us back into star-studded territory, or will we sink further into the depths of a repairability black hole?
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.