ThenAsNow

16 ms·

91.
by ThenAsNow 8y ago
While the points you make are true, they don't address the parent's hypothesis about engines, which is true. Once you get into commercial jetliner engine sizes, the fewer the number of engines for a given thrust level, assuming e
92.
by ThenAsNow 8y ago
There already is (and has been) knee-jerk reaction to this comment, but fundamentally I think your first clause represents territory that should be explored. I'm a huge believer in the value of retaining senior staff and making it par
93.
by ThenAsNow 8y ago
It will be very hard to displace Matlab out of certain very important niches. For example, across both academia and industry, Matlab is king in control systems design/analysis thanks to its toolboxes, Simulink, and (at least in indust
94.
by ThenAsNow 8y ago
> Is there some sort of bonus just because it's physical vs virtual? No, it's not about a "bonus" because it's physical. erikpukinskis [1] and blihp [2] captured essential reasons for the differences in their co
95.
by ThenAsNow 8y ago
> My computer engineering degree included Chemistry, Physics, Mechanical Engineering (statics/dynamics) Multivariate Calculus, Differential Equations / Linear Algebra, as well as Humanities (writing, history, art) in addition t
96.
by ThenAsNow 8y ago
> (BTW, I get seriously uptight at all the web designers who like to call themselves engineers :-) ) I feel similarly to you, but would extend it to cover most software development, period. With feet in multiple traditional engineering
97.
by ThenAsNow 8y ago
Was this comment meant pejoratively?
98.
by ThenAsNow 8y ago
It's not a simple matter of how frequently it occurs, the fundamental question is one of rigor. The principal difference between craftsmanship and engineering is also rigor. Historically, the ability to prove your code was free of cl
99.
by ThenAsNow 8y ago
> With respect, that amount to much of the same with different words. They are describing two different intents; one is to seek to settle conflict through the use of violence, and the other is to accomplish the same end through the ab
100.
by ThenAsNow 8y ago
Having multiple conveniently-located branches, at potentially broader operating hours, where you can talk to a real person is one significant reason.
101.
by ThenAsNow 8y ago
Google and their ilk picking these childish cutesy names ("Project Loon", "Project Fi", "Malta") is incredibly grating and needlessly detracts from their objectives. Do it once and maybe it's clever. Do
102.
by ThenAsNow 8y ago
> It’s adiabatic compression heating. If we're being pedantic (and I don't mean that pejoratively), this would have been more correct if you'd left out "adiabatic". If gasdynamic compression heating is being ind
103.
by ThenAsNow 8y ago
> Have you ever tried that? I have. I have been able to find offending runaway Flash sessions and kill them without taking out all my Firefox windows. I have been able to force wifi associations when some software flaw is preventing an
104.
by ThenAsNow 8y ago
This is a very fair point about Linux being an uncompelling target for commercial software. Sadly, even many engineering tools such as CAD systems have stopped supporting Linux. There is a lot of value to having some organization have both
105.
by ThenAsNow 8y ago
> Also all of the desktop environments I've used have been really ugly (GNOME, KDE, Unity). This is very much in the eye of the beholder. Linux with KDE has been my daily driver since at least as far back as 2009 (with the KDE 3.5
106.
by ThenAsNow 8y ago
> I don't think semiconductors would be better handled by the public sector - even if one could somehow get political support for that, which seems very unlikely in the US. Again, take a look at the SEMATECH example discussed above.
107.
by ThenAsNow 8y ago
I am taking your comment as a concise way to imply significant inefficiency and poor efficacy at NASA. If I am misreading, please let me know. Such polar implications about the efficacy of private vs. government (whether in R&D or othe
108.
by ThenAsNow 8y ago
While it's ultimately going to help to shame vendors regarding their poor security practices, it's really irritating and unfortunate this is all being framed as a Supermicro issue. How about the other companies in the same market
109.
by ThenAsNow 8y ago
> Vegetable farming is not a great thing for the environment either, and sometimes "organic" production does more harm. Could you explain these points more?
110.
by ThenAsNow 8y ago
In his position at Convair, he lists "Flight Test Engineer" as one of his roles. If he performed these duties onboard an aircraft (as many FTEs do), these could be relevant parameters. If he listed them for that reason, he proba
111.
by ThenAsNow 8y ago
> (SR-71 is his work) One unfortunate trait of the original Lockheed Skunkworks culture was to make Kelly Johnson (brilliant as he was) the only face of the organization. As just one such example, many know of the clever inlet system
112.
by ThenAsNow 8y ago
So at least to GE's credit, the end of Welch's tenure and during Immelt's GE solidified its position at the pinnacle of aeropropulsion and related research (namely, GE Global R&D). Until recently, GE had maintained this
113.
by ThenAsNow 8y ago
The assumption inherent in the question is that there is some kind of autopilot mode or logic change based on whether ejection has occurred or not. It is pretty unlikely that such explicit logic exists. Also, ejection only makes sense in t
114.
by ThenAsNow 8y ago
> Musk has shown that the key to making space flight affordable isn’t breakthroughs in engine performance, and its not reusability, at least not yet. Before SpaceX ever landed a booster they were 30x cheaper than the Shuttle, and 20x che
115.
by ThenAsNow 8y ago
Not that I'm expecting any replies given the thread's age, but for future reference of any interested party... > At sea level it has vurtually no advantage, it’s not until Tye rocket ge s to thin air that the Aerospike efficien
116.
by ThenAsNow 8y ago
Conventional ways to do this include casting or, as is done on the RL-10 and SSME, building the nozzle out of thin-walled tubes (very labor-intensive and expensive). 3D printing is the future here, but there's still lots of improvemen
117.
by ThenAsNow 8y ago
Regeneratively cooling nozzles (i.e., circulating liquid or gaseous propellant in embedded cooling channels) is standard fare for liquid rocket engines. GP used graphite because it was a student project. Probably not what would be done fo
118.
by ThenAsNow 8y ago
> Bigger tank does mean less payload because of the rocket equation (you now have to lift the bigger tank and the extra fuel, which takes more fuel, or less payload). For fixed gross mass. The point is, for a given payload mass fraction
119.
by ThenAsNow 8y ago
There's also a D-21 out for all to see at Blackbird Air Park in Palmdale (which has plenty of other awesome stuff as well, such as an A-12/SR-71 - don't remember which airframe - wind tunnel model).
120.
by ThenAsNow 8y ago
> Surely it's a massively important cost in terms of weight? Engine efficiency isn't just about cutting costs, it's about maximising payload - and the majority of a rocket's mass is fuel. Even a 5 percent efficiency g

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