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  • Showing only topics with the tag "usa". Back to normal view
    1. The US's flirtation with nuclear powered jet aircraft

      If everything had worked perfectly, it still would have been a bum airplane." - Charles Wilson, Secretary of Defense Back in the 1950s and 1960s, the United States attempted to design nuclear...

      If everything had worked perfectly, it still would have been a bum airplane." - Charles Wilson, Secretary of Defense

      Back in the 1950s and 1960s, the United States attempted to design nuclear powered aircraft. This was part of a larger "nuclear craze" in the era where everything and anything was proposed to have nuclear technology applied to it. This led to all kinds of things like the Chrysler TV-8 and "peaceful" earthmoving construction projects. The only place where nuclear power or propulsion really took off was for large ocean going ships both for military navies as well as civilian tankers, cargo ships and icebreakers. Spacecraft technology was the only other "success story."

      Nuclear powered aircraft, while more realistic than say nuclear cars, never quite caught on except for a few experimental engines and just one actual working aircraft. The most extensive efforts towards this during the Aircraft Nuclear Propulsion (ANP) program were the HTRE-2 and HTRE-3 experimental nuclear reactors with heat transfer assemblies designed for nuclear powered aircraft at the Idaho National Laboratory. Rather than burning fuel, the jet turbine would use the heat from the nuclear reaction to heat air sent through a compressor which would then be expelled as exhaust for thrust.

      On of the more fascinating tests were the test flights of the NB-36H which while conventionally powered, flew while carrying a working nuclear reactor to test the protective shielding of the crew. It carried an air-cooled 1 megawatt reactor. The engineers and crew worked within a specially shielded nose cabin with 12-inch-thick lead-glass windows.

      The project was canceled by the Kennedy administration a few months after taking office in 1961 citing high costs, poor management, and little progress towards a flight ready reactor saying:

      At the time of termination, the Aircraft Nuclear Propulsion Program was still in the research and development stage, with primary emphasis on high performance reactors. Although a number of research and development achievements can be credited to this program, at the time of termination an airplane had never been flown on nuclear power nor had a prototype airplane been built. - Joseph Campbell, Comptroller General

      and

      Nearly 15 years and about $1 billion have been devoted to the attempted development of a nuclear-powered aircraft; but the possibility of achieving a militarily useful aircraft in the foreseeable future is still very remote. - John F. Kennedy, POTUS

      Footnote: This post is a rework of a reddit post I made here a couple years back. It's not really meant to be a coherent or lengthy article but has some links and thoughts which I found interesting.

      20 votes
    2. Weekly US politics news and updates thread - week of July 3

      This thread is posted weekly - please try to post all relevant US political content in here, such as news, updates, opinion articles, etc. Extremely significant events may warrant a separate...

      This thread is posted weekly - please try to post all relevant US political content in here, such as news, updates, opinion articles, etc. Extremely significant events may warrant a separate topic, but almost all should be posted in here.

      This is an inherently political thread; please try to avoid antagonistic arguments and bickering matches. Comment threads that devolve into unproductive arguments may be removed so that the overall topic is able to continue.

      19 votes
    3. Affirmative action and its role in your life

      Initial SCOTUS rulings on affirmative action were before my time. I agree with the concept. Do you? Has it affected you positively? Negatively? Now that affirmative action has “ended” and we’ve...

      Initial SCOTUS rulings on affirmative action were before my time. I agree with the concept. Do you? Has it affected you positively? Negatively? Now that affirmative action has “ended” and we’ve totally “solved racism”, what is the path forward? There’s a lot of opinions out there but I want to know what real people think about the consequences in all our lives, U.S. or otherwise. Let’s talk.

      49 votes
    4. Report - The increasing return of legal child labor to the US economy

      Child labor is making a comeback with a vengeance. A striking number of lawmakers are undertaking concerted efforts to weaken or repeal statutes that have long prevented (or at least seriously...

      Child labor is making a comeback with a vengeance. A striking number of lawmakers are undertaking concerted efforts to weaken or repeal statutes that have long prevented (or at least seriously inhibited) the possibility of exploiting children.

      Take a breath and consider this: the number of kids at work in the U.S. increased by 37% between 2015 and 2022. During the last two years, 14 states have either introduced or enacted legislation rolling back regulations that governed the number of hours children can be employed, lowered the restrictions on dangerous work, and legalized subminimum wages for youths.

      Iowa now allows those as young as 14 to work in industrial laundries. At age 16, they can take jobs in roofing, construction, excavation, and demolition and can operate power-driven machinery. Fourteen-year-olds can now even work night shifts and once they hit 15 can join assembly lines. All of this was, of course, prohibited not so long ago.

      Legislators offer fatuous justifications for such incursions into long-settled practice. Working, they tell us, will get kids off their computers or video games or away from the TV. Or it will strip the government of the power to dictate what children can and can’t do, leaving parents in control — a claim already transformed into fantasy by efforts to strip away protective legislation and permit 14-year-old kids to work without formal parental permission.

      In 2014, the Cato Institute, a right-wing think tank, published “A Case Against Child Labor Prohibitions,” arguing that such laws stifled opportunity for poor — and especially Black — children. The Foundation for Government Accountability, a think tank funded by a range of wealthy conservative donors including the DeVos family, has spearheaded efforts to weaken child-labor laws, and Americans for Prosperity, the billionaire Koch brothers’ foundation, has joined in.

      https://tomdispatch.com/caution-children-at-work/#:~:text=The%20Covid%2D19%20pandemic%20of,distinct%20sign%20of%20social%20pathology.

      Here is a Robert Frost poem related to the subject of the article. https://www.poetryfoundation.org/poems/53087/out-out

      I'm GenX and I worked as a teen, but my earliest jobs were babysitting, not industrial labor.

      54 votes
    5. What are some very easy to make meal kits/prepared food that are accessible?

      As mentioned before my partner is a new paraplegic. He was a chef before becoming disabled a decade ago and the primary cook at home until the more recent injury. He's struggling to make sure he...

      As mentioned before my partner is a new paraplegic. He was a chef before becoming disabled a decade ago and the primary cook at home until the more recent injury. He's struggling to make sure he eats in part because making a baloney sandwich is currently an ordeal. We expect that to get easier as he gets OT and more used to being in a chair, but I'm wanting to start with prepared meals and work up to easy meal kits that help him get back into cooking. Difficulty level is things that taste good and have a variety of foods, as well as, for the future, kits that require less manual dexterity.
      Recipes also welcome as well as any must have kitchen items. We have an air fryer, microwave, electric kettle and toaster he can use easily. Oven and stove that are a bit more tricky right now.

      ETA: in the United States and with a large variety of grocery stores around me.

      26 votes
    6. Why doesn’t the US have paid parental leave and do you think we ever will?

      Something that has been bothering me for a long time is that the majority of voters in the US are parents. It seems paid parental leave is something that most people can empathize with needing,...

      Something that has been bothering me for a long time is that the majority of voters in the US are parents. It seems paid parental leave is something that most people can empathize with needing, and that would benefit most people’s lives. So I have such a hard time understanding why it isn’t proposed more often or prioritized as a voting issue. When I was pregnant with my daughter, I was shocked to hear that my own mother had to decide between going back to her job 3 weeks post partum or losing her job. I can’t believe that things have not really improved (in terms of protections for all parents, not just by industry/state/company)

      I read an interesting NPR article about how the AARP solidified the aging population into a powerful voting block that has skewed lawmakers to addressing their needs. Because this organization has clear priorities and influences many voters, lawmakers have incentive to pass laws the AARP supports. This article suggested that if parents could join together and create a similar political group, it would be the biggest and most powerful voting block.

      So I’m interested in what your opinions are. Do you see parental leave as important? If so, why don’t we have a national leave policy? How do we get there?

      39 votes
    7. NASCAR - Chicago weather delay

      Under lighting strike delay for 30 minutes, then started to on/off drizzling rain, hopefully we get the race in today!? Upside though, Cole Custer (Ford Mustang) in 1st place, if you're a Ford...

      Under lighting strike delay for 30 minutes, then started to on/off drizzling rain, hopefully we get the race in today!? Upside though, Cole Custer (Ford Mustang) in 1st place, if you're a Ford person like I am ya gotta be loving it!

      UPDATE -

      NASCAR has canceled the rest of the race do to rain and possibly more lighting strikes until 11AM (ET) tomorrow 7/2 on USA Network

      6 votes
    8. Lockheed Martin teases next generation aircraft

      Recently Lockheed Martin put out a post on social media [1] where they showed a silhouette of a yet-to-be-revealed aircraft. Most people seem to believe it will be the reveal of their entry to the...

      Recently Lockheed Martin put out a post on social media [1] where they showed a silhouette of a yet-to-be-revealed aircraft. Most people seem to believe it will be the reveal of their entry to the NGAD program [2] (Next Generation Air Dominance).

      While not much is publically known one interesting tidbit is how much it looks like the silhouette of the Testor Corp [3] F-19 [4] model that was released back in the mid 80s. Testor said at the time that the model was based on intelligence (aka leaks) of what would eventually become the F-117.

      Aviation forums in the past have said F-19 model is what they WANTED the F-117 and it does look quite a bit like the Have Blue [5] test craft they built, however, the legend is that they couldn't get the math to work for radar deflection properly at that time due to lack of computational power and ended up with the geometrically simpler F117 design we got.

      [1] Lockheed Martin Teaser: https://theaviationist.com/wp-content/uploads/2023/07/LM-NGAD-story.jpg
      [2] NGAD: https://en.wikipedia.org/wiki/Next_Generation_Air_Dominance
      [3] Testor F19: https://en.wikipedia.org/wiki/Testor_Corporation#F-19
      [4] Testor F19 Image: https://test803.files.wordpress.com/2018/10/img_6712-1.jpg
      [5] Have Blue: https://en.wikipedia.org/wiki/Lockheed_Have_Blue

      34 votes