Andrew Côté Profile picture
Mar 28 21 tweets 8 min read Read on X
It would be mistaken to say companies like Pratt and Whitney have not innovated on jet engine design in the last 70+ years of making them.

For example, 13 years ago they added this single gear between the compressor stage and turbofan at a program cost of only $10 billion. 🧵 Image
This lets the fan operate at a different speed than the compressor stage, though the ratio is still fixed. Still, having this small amount of adaptability improved fuel efficiency by 16%.

Today, their best-selling engine is the JT8D.

It first ran in 1960. Image
Commercial PW designs are built for reliability and cost management in large, disaggregated aircraft procurement supply chains.

Jet engine and aircraft companies have preferred to 'cost-optimize' in small areas of a large process rather than innovate on the whole process Image
This is a common pattern in both the space launch as well as the automotive industry.

In the past, companies became horizontally integrated to drive cost-efficiencies. But, this made it harder to create altogether new things.

The scope of optimization narrows Image
This made sense when you're seeking cheaper labor from different countries and US workers are expensive

But, you miss the high-level overview of the entire process, and miss what steps can be condensed or skipped altogether.

Automation makes vertical integration the better way Image
Thanks to automation, optimizing across the entire production stack lets you drive far past the cost savings you used to get by outsourcing labor.

Meanwhile legacy makers in both aerospace and automotive act more like 'parts integrators' Image
What makes it harder for legacy companies to re-vertically integrate is they've now spread operations over a large number of different voting districts for political capture.

Their cost-inefficient structure is now propped up by tax breaks they can't afford to lose Image
The irony is the strategy of outsourcing didn't work at all for the Aerospace industry.

Boeing outsourced 70% of design, engineering, fab, and testing of the 787 Dreamliner

Projected cost: $5 bn
Actual cost: $22 bn

This experienced has cowed both Boeing and Airbus into taking even less risks with engineering development while leaving them trapped in cantankerous supply chain logistics.

Boeing's most popular airframe, the 737, first flew in 1964 Image
This overall pattern of outsourcing for labor cost-management and political district capture, which creates a rigid cost-structure and life-line dependency on government assistance, which stifles high-level innovation and fundamental breakthroughs is common in a few areas Image
Defense, aerospace, automotive, pharmaceuticals, energy, construction, are all industries ripe for a disruption as people realize they can beat current cost-floor with vertical integration, and more innovation, and legacy companies can't keep upImage
I think as a culture we've grown pessimistic because we no longer see the rapid pace of change in our material built environments that led to such optimism in the 1950s and 60s.

Instead we see $10 billion dollar gears in 60 year old planes and are told its a 'breakthrough' Image
This gradual creeping-in of 'shittiness' in so many organizations, services, industries, and realms of politics has a common root - the politicization of what should be a competitive process, that stifles new ideas to protect incumbent interests.

I call it "The Blight"

As we learn to identify and burn out the Blight wherever we find it, the future material abundance and prosperity of human civilization is far beyond the small doled-out percentage improvements and hidden inflation we've learned to cope with through myopic doomerism Image
It's not that PW jets or Boeing planes or Ford cars didn't do a good job in their time. They were industrial and engineering triumphs that built Western prosperity, fought two World Wars, and industrialized the world.

But it's time for a new age of industry and manufacturing Image
Nowhere is there a better glimpse of this entirely-achievable future than what SpaceX is doing building Starship and creating the entire New Space industry with Falcon 9

It turns out, when you burn out the Blight you shatter even the most seasoned industry veterans expectations Image
Going to space is exotic, transcendental, and beyond the life paths of most humanity. Cars are far more domesticated as vehicles we drive, and Tesla is bringing blightless cars to the masses.

But there is still an important one missing: planes Image
This is why I think a jet company that builds the successor to Boeing can't use the same business model of Boeing of getting their parts from other people.

They need to design new engines from the ground up, not just add a gear here and there.
@AstroMechanica is doing exactly this and the more time I spend with @k2pilot the more I fully believe this vision of future flight.

3x faster than any existing plane for the same fuel cost. SF to Beijing in 4 hours, in a plane that costs less, too.

That is real progress Image
I'm optimistic that in hindsight we'll look back on past decades as a time when industrial progress temporarily stalled, while software and compute grew to maturity.

But eventually we turned our focus back to the world we live in - of atoms, steel, ships, and importantly, cities Image
The Golden Age of Flight, Space, and Atomic Energy are all ahead of us, in fact, if we learn to open our eyes a little bit wider and see past our local horizon.

If we let ourselves escape the past there is no telling where we can end up

Aspera Ad Astra Image

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More from @Andercot

Mar 30
This plot presents a sad truth:

Media has failed it's duty to inform the public

Instead, a business model of selling fear, stoking conflict, pandering, and pushing advertisers propaganda.

McKinsey-ification and it's consequences has been a disaster for the human species 🧵 Image
It wasn't always like this.

In the past newspapers made money by selling newspapers, and they competed on quality of research, clarity of insight, and reliability of sources.

Then newspapers started raking in massive sums in advertising revenue and things went sideways Image
The issue is that the advertising revenue model fundamentally drives a race to the bottom in hacking dopamine, while favoring content that can be digestible to the largest number of people.

Clickbait for the lowest common denominator

Marketers are very overt about this Image
Read 14 tweets
Mar 26
The reality is we could've easily mastered energy, food, and material abundance with 1970s era Technology.

Instead, we loaded up on virtue signaling, stakeholder engagement, and regulatory capture.

I call this general phenomenon "The Blight"
The Blight is what gives you things like billion-dollar a mile railroad tracks in San Francisco, never completed high speed rail in California, the NRC killing nuclear energy, ArianeSpace, a bunch of go-nowhere climate tech bubbles, Don Lemon, affirmative action, etc
The Blight is a disease of wealth.

Any society faced with genuine survival pressure can't afford the Blight, or else they perish

The Blight exists solely as a parasite suckling off the insane wealth generated by industrial capitalism
Read 9 tweets
Mar 11
AGI must be decentralized and cheap to be accessible for all

Yet scaling laws in data and energy mean it will take trillions of dollars, leading to centralized control

The solution is a total hardware revolution

Here's the Thermodynamic Computing Explainer 🧵 w/@Extropic_AIImage
I've spent the last few months getting to know @BasedBeffJezos, @trevormccrt1 and his team at @Extropic_AI.

What they're building is the Transistor of the AI era - the most natural physical embodiment of probabilistic learning.

To appreciate how, we need to dive deep:Image
The essence of machine learning is to accurately model the statistical distributions governing natural phenomena

You start with a guessed distribution, and slowly shape it to a target distribution - reality - through repeated observations.

Each sample helps better fit reality https://blog.ml.cmu.edu/2021/12/17/learning-observation-models/
Read 24 tweets
Feb 29
How to Get to Orbit Cheaper than SpaceX's Starship

Ian Brooke has developed a new kind of jet engine that can act as the first stage of a rocket.

I get brunch with him every Sunday and have grilled him for hours on how it works.

Adaptive Cycle Jet Engines, the primer 🧵
Two facts about rockets:
- They have to carry a lot of fuel
- Structurally they are quite weak

The miracle of the Falcon 9 and Starship is they can be re-used, 10, maybe even 20 times.

But even a Falcon 9 that lasts forever has to consume massive amounts of fuel Image
On the other hand, commercial airplanes are designed for 30,000 cycles. They don't carry as much fuel for an important reason:

Jets use the atmosphere as a ladder

Air is mixed with fuel, combusted, and used as reaction mass. Rockets have to carry their own liquid airImage
Read 15 tweets
Feb 19
A Weekend at the El Segundo Defense Tech Hackathon - The UNIX Timestamp of the Deep Tech Renaissance

This weekend smashed all of my expectations.

Here's my honest impressions and takeaways, and where this fits in to the evolving startup scene.

The Gundo Thread: 🧵Image
Organizers @apollo_defense did a fantastic job bringing together a room full of talented students, defense industry engineers, and investors.

Teams built through the night and even had calls with members of the Ukrainian defense ministry who were keen to see and use the results Image
The winners of the hackathon delivered a functional prototype with thoughtful consideration of real world requirements, to use drones as relays for free space laser comms.

For many teams ML and AI were used but not as the main show - just part of the stack Image
Read 17 tweets
Jan 31
Did you know that all kinds of tubes use physics?

Here's the physics of some of my favorite tubes 🧵

First up: The Vortex Tube, a thermodynamic mystery for over 80 yearsImage
A Vortex tube takes a stream of compressed air and separates it into two streams of high velocity air, one thats cold, one thats hot.

It has no moving parts and uses no electricity, invented in 1933 it wasn't fully explained until 2012.
Image
Image
You might be thinking - molecules of air have a distribution of temperatures, maybe it just separates the hot ones from the cold ones.

But thats thermodynamically impossible without using energy! No, this tube does not employ a Maxwell demon. Image
Read 21 tweets

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