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Category Archives: Design
Congratulations to SpaceX who landed the first stage intact. Assuming cost is roughly related to stage mass and engine count, reusing the first stage saves 9/10 of the whole rocket cost. If they can run the stage ten times, that … Continue reading
They say “Space is hard” Orbital Sciences crashed a rocket equipped with two 40 year old engines. Physically that old. They were an interim solution and they were working towards new engines. We don’t know at this point if the … Continue reading
The next fifteen years. Pure Electric – will be marginal Battery energy density will probably be lousy and they will be expensive so that pure electric cars can’t fill that many needs in the next fifteen years. What kind of … Continue reading
Can’t disclose my source right now, but a big Japanese camera maker has been secretly working on this ever since the first small sensor interchangeable lens systems by its competitors Olympus, Panasonic, Samsung and Sony started getting some market share. … Continue reading
Here’s my estimate of the situation. I’m no nuclear engineer but I know something… We use data from JAIF: And an annotated picture of a GE boiling water reactor from UCS: Now, using the above: At least half of the … Continue reading
The movie’s available on Google Video, embedded above. Enjoy!
Described by Barnaby Wainfan in the nineties: And in use in 2010 (click to get huge full view): Here’s another view of the beautiful Sukhoi T-50 / PAK FA: All photos from Sukhoi.
This 1:1 crop contains a clue: More below
Back when digital cameras started appearing around the turn of the millennium, it pretty quickly turned out that just making a digital version of an 35 mm SLR camera was not a very efficient move. The image quality with full … Continue reading