termain

That aircraft is more properly called the 367-80, or "Dash 80". While it did serve as the prototype of the 707, its fuselage isn't as wide.

The KC-135 tanker and its derivatives also derive directly from the Dash 80, rather than the 707. It retains the 80's more narrow fuselage.

I wonder if this had an impact on the AT&T backhaul that went wonky today.

Looks like someone is trying to bring about the Diamond Age.

Ah, ok. I can definitely understand your frustration since exoskeleton and aerodynamic efficiency don't generally mix.

Exoskeleton? You mean monocoque construction (aka load bearing skin)?

Medical malls, too, perhaps?

That's a good point. I was thinking along the lines of something that's essentially like reddit or HN, but had a field where you could add additional parent comment ids, so that the parent poster was notified of the reply.

I'd suggest directed acyclic graph comments, too, so that a comment can reply to more than one other comment. Potentially super nice, but I haven't seen anyone implement them yet.

It's how engineers talk in this context.

"IIRC all US government contractors have to be tested on hire"

That must be a new -- post 2007 -- thing, then.

Is it the entire SF-86 database, including contractors? Or just government employees?

John Green states it well: https://www.youtube.com/watch?v=SsFa_MJ0gBs

I can't speak for the rovers, but in my experience you start with the UTC time and the convert to a UT1 for space launches. We have to correct for the difference, which is called DUT1: https://en.wikipedia.org/wiki/DUT1

tbobborap1's channel on YouTube is a good start: https://www.youtube.com/channel/UCMQ5IpqQ9PoRKKJI2HkUxEw

Exhaust plume impingement.

"It is bittersweet for me, the opportunity lost to keep funding NASA at a reasonable level could have a lot of useful data in the 'bank' as it were, but by and large much of the stuff that makes what SpaceX does possible is relatively new."

Minimally, the pintle engine technology came out of NASA work and I suspect much of their technical knowledge comes either directly or indirectly from NASA funding.

" Clearly nobody in the "old guard" really cared about space, they just wanted to keep the money flowing. I am profoundly glad that they are being shaken up."

I think many of their engineers cared. But their corporate culture doesn't seem that interested in spaceflight, or at least spaceflight beyond the status quo.

Quite impressive senior project. I know CalPoly aerospace does well with interacting with the industry and NASA.

It's hard to get a sword into play against massed pikemen. And you want massed pikemen against the heavy cavalry of the period.

Also swords expensive compared to spears.

Roughly:

Redstone: Designer: Army Ballistic Missile Agency (Now Marshall Spaceflight Center) Manufacturer: Chrysler

Atlas: Convair and its successor interests (General Dynamics, Lockheed, ULA)

Saturn V: NASA Marshall, Boeing, North American and Douglas

Ariane: EADS Astrium and Arianespace/CNES (French Space Agency)

So, yeah, they've always been commercial, but they haven't always been commerically driven or (entirely) commercially managed.

"You don't use a generalised pointer-to-rocket-engine system because you aren't going to add more engines at runtime"

Well, we might. Particularly if the vehicle you're modeling for a hardware in the loop sim isn't entirely specified at compile time.

Yeah, that's what I was getting at. Thanks for the more succinct statement.

Perhaps because it's not counterintuitive? Staying warm in a cold environment must require the consumption of energy.

I have a pet theory about the older women part: they're a remnant of gender segregation. When teaching was one of the few professions available to women, the lack of competition from other lines of work made such teachers cheaper and more plentiful. I had a similar experience further south. Though, notably, many of my best teachers were older black women. I suspect combined gender and racial segregation led to that.

Ignition is fantastic and I'm continuously surprised how unknown it is amongst the engine folk at MSFC.

I mean it's a necessity in that you need an elastic supply of labor to respond to the market forces that ostensibly drive a free market economy to meet the needs of its participants.

Unemployment is such a funny thing. In a free market economy, unemployment is a necessity but seems to be treated as a universal evil.

"Turing was decades ahead of the rest of us."

That seems unfair to Alonzo Church.

Which part of Nokia? Networks, HERE or Technologies?

Baseball is more an illustrative example than an analogy. Consider http://www.pankin.com/markov/intro.htm

I believe so.