The enemy, the size of the country, and the foulness of the weather were all grossly underestimated

August 9th, 2023

How Hitler Could Have Won World War II by Bevin AlexanderHitler’s greatest strategic mistake, after he’d decided to invade Russia, Bevin Alexander explains (in How Hitler Could Have Won World War II), was his refusal to concentrate on a single, decisive goal:

He sought to gain — all at the same time — three widely distant objectives: Leningrad, because it was the birthplace of Russian Communism; Ukraine and the Caucasus beyond, for its abundant foodstuffs, 60 percent of Soviet industry, and the bulk of the Soviet Union’s oil; and Moscow, because it was the capital of the Soviet Union and its nerve center.

[…]

He hoped to seize a million square miles of the Soviet Union in 1941, a region the size of the United States east of the Mississippi. The campaign in the west, on the other hand, had been fought out in an area of 50,000 square miles, roughly the size of North Carolina or New York State. Therefore, the ratio of space to men was twenty times greater in the east than in the west.

Field Marshal Brauchitsch, commander of the army, and General Halder, chief of staff, wanted the primary objective to be Moscow:

Stalin would be compelled to fight for Moscow. It was the hub of railroads, mecca of world Communism, headquarters of the highly centralized government, and a great industrial center employing more than a million workers.

Moreover, an attack into the center of the Soviet Union would turn the nation’s vastness—generally thought of as its greatest asset—into a liability. Once the Germans possessed Moscow’s communications node, Red Army forces on either side could not coordinate their efforts. One would be cut off from aid and succor to the other, and the Germans in the central position between the two could have defeated each separately.

The German army and economy could support a drive on Moscow. Though 560 miles east of the frontier, it was connected by a paved highway and railroads.

This would have still been a direct, frontal assault against the strength of the Red Army, but the ratio of force to space was so low in Russia that German mechanized forces could always find openings for indirect local advances into the Soviet rear. At the same time the widely spaced cities at which roads and railways converged offered the Germans alternative targets. While threatening one city north and another city south, they could actually strike at a third in between. But the Russians, not knowing which objective the Germans had chosen, would have to defend all three.

Hitler, by trying for too much and then altering his priorities failed everywhere:

These failures meant Germany had lost the war. By December 1941, there was no hope of anything better than a negotiated peace. This Hitler refused to consider.

Hitler’s plan rested on two false assumptions. The first was that he would have time enough (even without the shift of panzers to the Ukraine) to switch armor to the north then back to the center in time to win a decisive victory before the rains and snows of autumn. Distances were simply too great, Russian roads and climate too poor, and Red Army resistance too intense for such a plan to have had any hope of success. As Guderian summarized the campaign to his wife on December 10, 1941, “The enemy, the size of the country, and the foulness of the weather were all grossly underestimated.”

Normal aging reduces the amount of nitric oxide in the body, which reduces nitrosylation, which reduces memory and learning ability

August 8th, 2023

Researchers from the University of Colorado Anschutz Medical Campus believe they have identified the central mechanism behind cognitive decline associated with normal aging:

“The mechanism involves the misregulation of a brain protein known as CaMKII which is crucial for memory and learning,” said the study’s co-senior author Ulli Bayer, Ph.D., professor of pharmacology at the University of Colorado School of Medicine.

[…]

Bayer said that aging in mice and humans both decrease a process known as S-nitrosylation, the modification of specific brain proteins including CaMKII.

“The current study now shows a decrease in this modification of CaMKII is sufficient to cause impairments in synaptic plasticity and in memory that are similar in aging,” Bayer said.

Normal aging reduces the amount of nitric oxide in the body. That in turn reduces nitrosylation which reduces memory and learning ability, the study said.

If you join the commander can be a fool and not know how to conduct quality operations

August 7th, 2023

The Guardian profiles one of Ukraine’s deadliest drone pilots:

Earlier this week, Ukraine’s defence minister, Oleksii Reznikov, announced the 10th model of first person view drone (FPV) “that officially goes into operation in the armed forces of Ukraine”.

Not only has Olexsandr, nor any of his colleagues, not seen this drone, but they say they have not received any such hardware from the ministry of defence.

Olexsandr’s drones are all made from components bought online from China and then put together by two of his friends on the 24th floor of an apartment block in Kyiv.

He either picks them up on his monthly trips back to Ukraine’s capital where he lives or they are delivered by post to him close to his field of operation.

The price is about $400 (£314) a drone and the costs are largely met by generous unnamed donors. That is said to be significantly less than the $650 being paid by the big voluntary organisations that are buying up drones for other army units due to the lack of equipment from the defence ministry. “We can win this war with drones,” says Olexsandr. And yet the Russian drive to build them in their thousands and provide them cheaply to the frontline is not being replicated on the Ukrainian side, he adds.

“It is why even now I am not joining the armed forces — if you join the commander can be a fool and not know how to conduct quality operations,” he says. “I’m very effective by myself. I am ready to fight until the end of the war like this. According to official information, Russia produces 3,000 drones from the plants. In Ukraine, some small rich tsars [profiteering businessmen] produce these drones for selling, volunteer funds buy them and then charge them $650 a drone.”

He has lost eight reconnaissance drones to Russian fire, including two last month when a tank shot close to his position leaving him with a deep gash to his leg. “The Russians have changed their strategy to try and kill drone crews,” he says.

[…]

Olexsandr had little experience of drones before February 2022 but could see they could be crucial to the war effort and so practised with one purchased from the internet. “I wanted to find something where I could be most useful,” he says.

[…]

On a reconnaissance mission, Olexsandr prefers to be alone. He will typically be set a kilometre square piece of ground to monitor, working from as close as 800m from the target and as far away as 12km.

When he is working with kamikaze drones, he operates in teams of three to four. One will operate a reconnaissance drone and another pilots the kamikaze drone itself, which is attached to up to 600g of C4 explosive material. Then there will be at least one other person overseeing the signal and wider communications.

The Ukrainian crew could be as close as 400m from the target or as distant as 5.5km away.

Nanoplastics are small enough to slip across cell membranes

August 7th, 2023

For the love of God, Wired pleads, stop microwaving plastic:

Microwaving delivers a triple whammy: heat, UV irradiation, and hydrolysis, a chemical reaction through which bonds are broken by water molecules. All of these can cause a container to crack and shed tiny bits of itself as microplastics, nanoplastics, and leachates, toxic chemical components of the plastic.

[…]

Our kidneys remove waste, placing them on the front lines of exposure to contaminants. They are OK at filtering out the relatively larger microplastics, so we probably excrete a lot of those. But nanoplastics are small enough to slip across cell membranes and “make their way to places they shouldn’t,” Boland says.

[…]

“Babies are at greater risk from those contaminants than full-grown people,” Hussain says. So to test how much plastic babies are exposed to, Hussain’s team chose three baby-food containers available at a local grocery store: two polypropylene jars labeled “microwave-safe” according to US Food and Drug Administration regulations, and one reusable food pouch made of an unknown plastic.

They replaced the original contents of each container with two different liquids: deionized water and acetic acid. Respectively, these simulate watery foods like yogurt and acidic foods like oranges.

They then followed FDA guidelines to simulate three everyday scenarios using all three containers: storing food at room temperature, storing it in the refrigerator, and leaving it out in a hot room. They also microwaved the two polypropylene jars containers for three minutes on high. Then, for each container, they freeze-dried the remaining liquid and extracted the particles left behind.

For both kinds of fluids and polypropylene containers, the most microplastics and nanoplastics — up to 4.2 million and 1.2 billion particles per square centimeter of plastic, respectively — were shed during microwaving, relative to the other storage conditions they tested.

In general, they found that hotter storage temperatures cause more plastic particles to leak into food. For example, one polypropylene container released over 400,000 more microplastics per square centimeter after being left in a hot room than after being stored in a refrigerator (which still caused nearly 50,000 microplastics and 11.5 million nanoplastics per square centimeter to shed into the stored fluid). “I got terrified seeing the amount of microplastics under the microscope,” Hussain says.

To test what these plastics do to our bodies once they’re consumed, the team bathed human embryonic kidney cells in the plastic roughage shed by the baby-food containers. (The team chose this kind of cell because kidneys have so much contact with ingested plastic.) After two days of exposure to concentrated microplastics and nanoplastics, about 75 percent of the kidney cells died—over three times as many as cells that spent two days in a much more diluted solution.

The wellness-to-woo pipeline

August 6th, 2023

James Ball, writing in The Guardian, is shocked and appalled that the wellness movement has shifted from hippy to fascist:

“They have been moving generally to far-right views, bordering on racism, and really pro-Russian views, with the Ukraine war,” she says. “It started very much with health, with ‘Covid doesn’t exist’, anti-lockdown, anti-masks, and it became anti-everything: the BBC lie, don’t listen to them; follow what you see on the internet.”

Things came to a head when one day, before a meditation session — an activity designed to relax the mind and spirit, pushing away all worldly concerns — the group played a conspiratorial video arguing that 15-minute cities and low-traffic zones were part of a global plot. Jane finally gave up.

This apparent radicalisation of a nice, middle-class, hippy-ish group feels as if it should be a one-off, but the reality is very different. The “wellness-to-woo pipeline” — or even “wellness-to-fascism pipeline” — has become a cause of concern to people who study conspiracy theories.

This shouldn’t be surprising. German Romanticism led to both hippies and Nazis.

19-year-old MIT dropout is “working to replace gunpowder”

August 6th, 2023

Investor interest in defense startups has grown, with nearly $8 billion of VC dollars flowing to aerospace and defense startups last year, and 19-year-old MIT dropout Ethan Thornton’s Mach Industries has landed Sequoia Capital’s first investment into defense tech:

Mach’s seed round, which included participation from Marque VC and Champion Hill Ventures, came to $5.7 million.

Mach is developing hydrogen-powered platforms for the military, including unmanned aerial vehicles (UAVs), munitions and hydrogen generation systems.

[…]

On LinkedIn Thornton has said that the company is “working to replace gunpowder,” and in our interview he described a less expensive approach to munitions.

“Taking a missile [and turning it into] a bullet, every time you do that, you really, really decrease your costs,” he said. “That’s fundamentally one of the changes Mach wants to see happen: taking more away from the rocket equation — because you have to bring your own propellant, your own sensors, and things get very expensive — and back to actually an older model using more projectile-based systems.”

Thornton’s interest in hardware stretches back to his childhood; the way he tells it, it’s part-nature, part-nurture, with a grandfather who built kit aircraft in his spare time, a high school job as an auto mechanic and a small business selling handmade kitchen knives, cutting boards and other products.

At some point along the way, he developed what he called an “[obsession] with electrolysis.” Electrolysis is a process by which water is split into its constituent elements — one of which, of course, is hydrogen. The first result of that obsession was a small arms device he made while still in high school. The entire thing cost around $200 — funded by his parents, after he pitched them with a 20-page paper — and consisted of a couple of deer feeder batteries and an electrolyzer, all powering what was essentially a bazooka.

[…]

Before his first academic year at MIT even commenced, he started working with MIT Lincoln Laboratory, a national R&D center managed by the school for the DOD. The military has long had an interest in hydrogen, especially as a robust energy supply chain for contested war environments, and the lab had its own group focused on energy systems.

While Thornton realized that the Lincoln Lab wasn’t the perfect fit for what he wanted to build, he was able to build his government connections. And then he decided to drop out.

“This was pre-team, pre-revenue, anything,” he said. “I just couldn’t sit through classes anymore.”

Thornton also walked away from Lincoln Lab with two significant hires: Erik Limpaecher, who was a senior technical staff at the lab’s energy systems group, and who had been with the center for nearly 12 years; and Mark Donahue, a former program manager for control and autonomous systems, who departed the lab after 15 years. Limpaecher is now Mach’s chief innovation officer, while Donahue was installed as VP of engineering.

Thornton did end up finishing his first year at MIT this past spring, but not before putting together a team of undergrads and testing a large, mounted gun under the railroad tracks near Charles River, and joining the newest class of Peter Thiel’s Thiel Fellowship in February.

The advanced version replaces the potato projectile, I assume.

In flight, the projectile deploys fins and wings and a motor

August 5th, 2023

The US arsenal has been virtually stripped of 155 mm artillery shells:

This has produced a situation where the US military has a powerful incentive to not only buy more 155 mm shells, but to buy the most technologically advanced version.

The Sub-Caliber Artillery Long-Range Projectile is designed to strike targets at long range with extremely high precision using a standard 155 mm gun. It can hit both stationary and moving targets at ranges of well over 68 miles (110 km), greater than the range of its predecessor. The ultimate objective of the shell is to achieve one-shot, one-kill.

[…]

The details of the new projectile haven’t been released, though we do know that it’s a sabot round. That is, the projectile is sealed in a canister that strips away when it leaves the gun muzzle, revealing the aerodynamic projectile. In flight, the projectile deploys fins and wings and a motor (a rocket or a ramjet) to provide additional speed and range.

Inside, there is an avionics package to guide the projectile to its target and electronic countermeasures to fend off hostile jamming. This is particularly impressive engineering because these electronics must withstand a shock of 15,500 gs when fired from the gun.

The NCAA has a “hot girl” problem

August 4th, 2023

The NCAA has a “hot girl” problem:

The [Cavinder] Twins’ attorney, Darren Heitner, calls their stratospheric rise a “blueprint” for other college athletes trying to cash in on the new, multibillion-dollar market. That market is the result of a 2021 Supreme Court ruling that led the National Collegiate Athletic Association, the 117-year-old organization that governs college sports, with roughly 1,100 member schools nationwide, to change its name, image, and likeness (or NIL) policy—enabling student athletes to cash in on their athletic prowess.

Before then, student athletes could generate enormous amounts of money for their schools—in 2019, the year before the pandemic, top-tier schools earned nearly $16 billion in media rights, tickets sales, licensing, and so forth from their athletes—while making nothing for themselves.

Thing is, the athletes now profiting are not necessarily the ones with the most athletic prowess. Or at least that’s the case when it comes to female athletes.

While the Twins are accomplished basketball players—until recently, they played for Division I University of Miami—they’re nowhere near the top of the women’s basketball totem pole. The top players in college women’s basketball—like Keishana Washington at Drexel University or Caitlin Clark at University of Iowa—score close to 30 points per game. In her final year at Miami, Haley Cavinder scored just over 12 points per game; Hanna, just under 4 points. They were good, but not WNBA good.

“If you look at the NIL girls, the first ones who were getting deals were the blonde girls,” Louis Moore, a sports historian at Grand Valley State University, told The Free Press. The Cavinder Twins, Moore said, have benefited handsomely from “their very blonde, girl-next-door looks,” posting videos of themselves in bikinis and tight-fitting dresses. Lots of their videos hint at the possibility of one twin having a boyfriend. Others wink at the male fantasy of group sex with identical sisters, featuring captions like “when he asks for blonde twins for Christmas” and “I want a girl with a twin sister.”

The Twins get their appeal. And even though they think it’s unfair that the mostly black top scorers in women’s college basketball make less than they do—including Louisiana State University’s Angel Reese and Flau’jae Johnson—that’s not stopping them.

[…]

Louisiana State University gymnast Olivia Dunne neatly illustrates this dynamic. Like the Twins, she’s good at her sport, but she’s not heading to the Olympics next year in Paris. And, like the Twins, she’s a button-nose blonde. No surprise, her Instagram is a hit. So is her TikTok, especially this recent video.

Dunne has racked up NIL deals totaling $3.4 million—making her the top-earning female athlete in the NCAA and No. 2 overall. As of this week, she lags behind No. 1 Bronny James, the oldest son of LeBron James who will be playing basketball for USC and is worth nearly $7 million, and she leads No. 3 Arch Manning, a quarterback phenom worth nearly $3 million who is a nephew of former NFL quarterbacks Peyton and Eli Manning. (Nepotism is clearly another driver of NIL success.)

Growth has to come from within

August 3rd, 2023

One of the interesting lines of evidence about the importance of human capital in wealth disparities, Emil O. W. Kirkegaard notes, comes from examples of how groups can recover from setback:

The most obvious example are the losers of World War 2, that is, Japan, Germany, and Italy. Japan and Germany suffered extreme damage to their infrastructure in the later stages of the war but were quickly able to recover.

[…]

Some of this research has been done using slaveholders in the former Confederacy, who lost the US civil war (1861-65). These were wealthy people who owned slaves, but lost this wealth. If they were wealthy because of human capital reasons, we would expect them to regain some fraction of this, and their children to markedly catch-up towards their long-term trend.

[…]

For people who had a lot of wealth from slave owning in 1960, their wealth was still reduced in 1870. However, their sons had actually caught back up by 1900. Likewise with the grandsons.

[…]

In his book The Son Also Rises economic historian Greg Clark tracked elite surnames to gauge social mobility across many countries. One of these was China, where the situation was dire.

[…]

However, when looking up modern data for the elite surnames, these are still over-represented among the current elite, despite the efforts of the communists to eradicate their advantages.

[…]

Here some will object that the recovery of the former Axis powers was due to US subsidies (Marshall plan in Europe). The problem with this idea is that wealthy countries have also tried doing the same kind of growth program in other regions of the world, and they have never worked very well.

[…]

Growth has to come from within.

His most disastrous error was to go into the Soviet Union as a conqueror instead of a liberator

August 2nd, 2023

How Hitler Could Have Won World War II by Bevin AlexanderThe advice to attack an enemy’s weak points goes back at least to Sun Tzu in the fifth century B.C., Bevin Alexander explains (in How Hitler Could Have Won World War II), but it is extraordinarily difficult for human beings to follow:

Attacking Russia head-on was wrong to begin with, because it guaranteed the greatest resistance, not the least. A direct attack also forces an enemy back on his reserves and supplies, while it constantly lengthens the supply and reinforcement lines of the attacker. The better strategy is to separate the enemy from his supplies and reserves. That is why an attack on the flank is more likely to be successful.

Nevertheless Hitler could still have won if he had struck at the Soviet Union’s weakness, instead of its strength.

His most disastrous error was to go into the Soviet Union as a conqueror instead of a liberator. The Soviet people had suffered enormously at the hands of the Communist autocracy for two decades. Millions died when the Reds forced people off their land to create collective farms. Millions more were obliged to move great distances and work long hours under terrible conditions in factories and construction projects. The secret police punished any resistance with death or transportation to horrible prison gulags in Siberia. In the gruesome purges of the 1930s, Joseph Stalin had systematically killed all leaders and all military officers who, in his paranoid mind, posed the slightest threat to his dictatorship. Life for the ordinary Russian was drab, full of exhausting work, and dangerous. At the same time, the Soviet Union was an empire ruling over a collection of subjugated peoples who were violently opposed to rule from the Kremlin.

Vast numbers of these people would have risen in rebellion if Hitler’s legions had entered with the promise of freedom and elimination of Soviet oppression. Had Hitler done this, the Soviet Union would have collapsed.

Such a policy would not have given Hitler his Lebensraum immediately. But once the Soviet Union had been shattered, he could have put into effect anything he wanted to with the pieces that remained.

Hitler followed precisely the opposite course of action.

Nearly half-a-million people were living within a 150-mile radius of the explosion

August 1st, 2023

The first atomic bomb test site — selected in 1944 from a shortlist of eight possible test sites in California, Texas, New Mexico, and Colorado — had been selected, in part, for its supposed isolation:

Yet in reality, nearly half-a-million people were living within a 150-mile radius of the explosion, with some as close as 12 miles away. Many, if not most, of these civilians were still asleep when the bomb detonated just before dawn.

Several civilians nearby — stunned by the blast — later reported that they thought they were experiencing the end of the world. A local press report stated that the flash had been so bright that a blind girl in Socorro, New Mexico — about 100 miles from the bombing range — was able to see it, and asked: “What’s that?” In Ruidoso, New Mexico, a group of teenage campers were jolted out of their bunk beds onto their cabin floor. They ran outside, worried that a water heater had exploded. Barbara Kent, one of the campers, recently recalled in an interview with National Geographic that “[A]ll of a sudden, there was a big cloud overheard, and lights in the sky. It hurt our eyes. It was as if the sun came out tremendous. The whole sky turned strange.”

A few hours later, white flakes began to fall from the sky. The campers began to play in the flurry.

“We were grabbing the white flakes, and putting it all over ourselves, pressing it on our faces,” Kent said. “But the strange thing, instead of being cold like snow, it was hot. And we all thought, ‘Well, the reason it’s hot is because it’s summer.’ We were only thirteen; we didn’t know any better.”

One family in Oscuro, about 45 miles away from the site, hung wet bed sheets in their windows to keep the flakes from floating into the house. The strange substance continued to fall from the sky for days, coating everything: orchards, gardens, herds of livestock, cisterns, ponds, and rivers.

The biggest challenge of the coming decades might simply be maintaining the systems we have today

August 1st, 2023

Complex systems won’t survive the competence crisis, Harold Robertson argues:

In a span of fewer than six months in 2017, three U.S. Naval warships experienced three separate collisions resulting in 17 deaths. A year later, powerlines owned by PG&E started a wildfire that killed 85 people. The pipeline carrying almost half of the East Coast’s gasoline shut down due to a ransomware attack. Almost half a million intermodal containers sat on cargo ships unable to dock at Los Angeles ports. A train carrying thousands of tons of hazardous and flammable chemicals derailed near East Palestine, Ohio. Air Traffic Control cleared a FedEx plane to land on a runway occupied by a Southwest plane preparing to take off. Eye drops contaminated with antibiotic-resistant bacteria killed four and blinded fourteen.

[…]

The core issue is that changing political mores have established the systematic promotion of the unqualified and sidelining of the competent. This has continually weakened our society’s ability to manage modern systems. At its inception, it represented a break from the trend of the 1920s to the 1960s, when the direct meritocratic evaluation of competence became the norm across vast swaths of American society.

In the first decades of the twentieth century, the idea that individuals should be systematically evaluated and selected based on their ability rather than wealth, class, or political connections, led to significant changes in selection techniques at all levels of American society. The Scholastic Aptitude Test (SAT) revolutionized college admissions by allowing elite universities to find and recruit talented students from beyond the boarding schools of New England. Following the adoption of the SAT, aptitude tests such as Wonderlic (1936), Graduate Record Examination (1936), Army General Classification Test (1941), and Law School Admission Test (1948) swept the United States. Spurred on by the demands of two world wars, this system of institutional management electrified the Tennessee Valley, created the first atom bomb, invented the transistor, and put a man on the moon.

By the 1960s, the systematic selection for competence came into direct conflict with the political imperatives of the civil rights movement. During the period from 1961 to 1972, a series of Supreme Court rulings, executive orders, and laws—most critically, the Civil Rights Act of 1964—put meritocracy and the new political imperative of protected-group diversity on a collision course. Administrative law judges have accepted statistically observable disparities in outcomes between groups as prima facie evidence of illegal discrimination. The result has been clear: any time meritocracy and diversity come into direct conflict, diversity must take priority.

The resulting norms have steadily eroded institutional competency, causing America’s complex systems to fail with increasing regularity. In the language of a systems theorist, by decreasing the competency of the actors within the system, formerly stable systems have begun to experience normal accidents at a rate that is faster than the system can adapt. The prognosis is harsh but clear: either selection for competence will return or America will experience devolution to more primitive forms of civilization and loss of geopolitical power.

[…]

After the early 1970s, employers responded by shifting from directly testing for ability to using the next best thing: a degree from a highly-selective university. By pushing the selection challenge to the college admissions offices, selective employers did two things: they reduced their risk of lawsuits and they turned the U.S. college application process into a high-stakes war of all against all.

In 1984, Yale sociologist Charles Perrow’s Normal Accidents: Living With High-Risk Technologies explained that catastrophic failures are unavoidable and cannot simply be designed around, when you have systems that are both complex and tightly coupled:

The biggest shortcoming of the theory is that it takes competency as a given. The idea that competent organizations can devolve to a level where the risk of normal accidents becomes unacceptably high is barely addressed. In other words, rather than being taken as absolutes, complexity and tightness should be understood to be relative to the functionality of the people and systems that are managing them. The U.S. has embraced a novel question: what happens when the men who built the complex systems our society relies on cease contributing and are replaced by people who were chosen for reasons other than competency?

The answer is clear: catastrophic normal accidents will happen with increasing regularity. While each failure is officially seen as a separate issue to be fixed with small patches, the reality is that the whole system is seeing failures at an accelerating rate, which will lead in turn to the failure of other systems. In the case of the Camp Fire that killed 85 people, PG&E fired its CEO, filed Chapter 11, and restructured. The system’s response has been to turn off the electricity and raise wildfire insurance premiums. This has resulted in very little reflection.

[…]

Americans living today are the inheritors of systems that created the highest standard of living in human history. Rather than protecting the competency that made those systems possible, the modern preference for diversity has attenuated meritocratic evaluation at all levels of American society. Given the damage already done to competence and morale combined with the natural exodus of baby boomers with decades worth of tacit knowledge, the biggest challenge of the coming decades might simply be maintaining the systems we have today.

The ability to fly lower means it won’t have to spend time climbing

July 30th, 2023

Eviation, a Washington State-based startup aiming to be one of the first companies to produce electric planes for commercial use, says its electric planes due in 2027 will make air travel less costly and cleaner:

The Alice is a nine-seater aircraft with a length of around 57 feet and a wingspan of 62 feet. These dimensions put it in the ballpark of a Cessna Citation Excel or a Piaggio P.180 Avanti. “I like to say that we found the sweet spot for electric aviation with this aircraft: we have a nine-passenger plane,” Aviation CEO Gregory Davis told InsideEVs. “You can fly with a single pilot in North America, so it means that it is more cost-effective to operate than a ten-passenger plane where you need two pilots.”

Keeping this plane flying in the air requires significant research and development — and that starts with the battery. Namely, the Alice stores a 900kWh battery pack in its underbelly. “In terms of the size of the battery, it is an 8,000-pound battery,” says Davis. “That 8,000-pound battery is fairly similar to what a full fuel load on a plane that size might weigh,” Davis told InsideEVs. “It actually works out well inside the existing rules for aircraft sizing.”

The 900kWh battery pack gives the Alice a range of around 250 nautical miles (with an additional 30 minutes for reserves), meaning it’s geared strictly for short-distance travels.

[…]

We need to have a good battery life, but it doesn’t need to be a 20-year battery. What we’re actually doing is designing our battery to be a 3,000-cycle or 3,000-hour battery, and they’ll get replaced during routine maintenance. We make sure that you’re also operating in the top 10% of battery utilization.”

Interestingly, aircraft turbine engines need to be rebuilt around every 3,000 cycles, and after several rebuilds, they’ll need to be replaced entirely.

[…]

“For the aircraft, electricity that is derived from the grid is between 30 and 70% cheaper than aviation fuel, and that’s in today’s environment,” Davis told InsideEVs. Besides the fuel cost savings, electric motors providing thrust will be less maintenance intensive than a turbine engine. “The electric motors are so much less costly to maintain than a traditional turbine engine,” Davis said.

But ditching the turbines comes with an unexpected benefit. Namely, the plane won’t have to reach 30,000+ feet to achieve maximum efficiency.

[…]

The ability to fly lower also means that Alice won’t have to spend more time climbing, which is a highly energy-intensive task. Along with cutting down carbon emissions, the Alice will also reduce noise pollution, an adversary of residential communities located near airports. “One of the advantages of an electric aircraft is that it’s very quiet. It’s incredibly quiet, especially compared to a turbine aircraft,” Davis said. With the quieter flight, these planes might be allowed to fly into airports with curfews during off-hours, like John Wayne Airport (SNA) in Irvine, California.

“The idea is that with an {electric} aircraft, you can access the airport infrastructure at 2:00 in the morning to do an overnight package delivery,” Davis told InsideEVs. “That rapid point-to-point package delivery for the freight provider is {highly beneficial}. Being able to knock twelve hours off your delivery time is very valuable to freight companies.”

There is no neutral party that really is playing the role of trying to end the conflict

July 29th, 2023

William Arkin is afraid that the Biden administration has squandered the possibility of being a third actor in the Ukraine-Russia war:

The United States has aligned itself 100% with Ukraine. And as a result of that, I don’t see much movement or much interest even on the part of the U.S. government in Washington to be a third party, to actually be a negotiator, to find a peaceful resolution. So, really, no one is playing that role. The United Nations is not playing that role. Sweden is not playing that role anymore, now that it aspires to be a member of NATO. There is no neutral party that really is playing the role of trying to end the conflict between the two parties, who are essentially stalled right now in combat, where there’s not really much movement on either side, but the killing continues.

So, it was the case that in the minds of Russia, the expansion of NATO was provocative and may, in the theory of national security, been a strategic threat to Russia. And it is probably the case that when history is written, we will say that NATO was a little bit too greedy in its zeal to expand into Eastern Europe. But the reality is that that doesn’t excuse the Russian invasion, not in 2014 nor in 2022. And the reality for the CIA is that they need to understand what Putin’s intentions are, not only to understand the implications of Ukraine’s actions, particularly its increasing actions in Crimea and across the border in Russia, but also to understand what it is that Putin will settle for as part of a settlement and also what it is that Zelensky will settle for. So, it’s a tricky situation where I don’t really have a lot of confidence that the CIA is fully on top of what either of these two leaders think.

It was too “technically sweet” not to develop

July 28th, 2023

Oppenheimer opposed the H-bomb, which would be 1,000 times more powerful than the atomic bombs that ended World War II, but not entirely for moral reasons:

At first, he thought it was infeasible. Then, when the math proved it feasible, he dropped his resistance, admitting that it was too “technically sweet” not to develop. (The film does not quote this rather famous line of his.) Still, he remained unenthusiastic, worrying that the H-bomb would divert money from Hiroshima-type A-bombs, which he thought the Army should continue building as weapons to be used on the battlefield if the Soviets invaded Western Europe. He argued that H-bombs were too powerful for battlefield targets—they could destroy only big cities—and, if the Russians built them, as they would if we did, a war would devastate American cities, too. He did eventually come to the view, as portrayed in the film, that this mutual vulnerability might deter both sides from using the weapons or even from going to war at all. But he was not opposed to nuclear weapons in general.

[…]

His hedged attitude toward the H-bomb threatened the project’s funding. And so its leading advocates set out to destroy him.