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Show HN: Walk-through of rocket landing optimization paper [pdf]

https://scpowers.github.io/pdfs/rocket_landing.pdf
16•scpowers•3d ago
Hey all! Long time lurker, first time poster.

I found this rocket landing trajectory optimization paper cool, but it took me a while to wrap my head around it and implement it. I wrote up an expanded version of the paper including details that would have helped me understand it the first time through, with the idea being that it might make the content more approachable for others with similar interests. The source code is also linked in the document.

I'm open to feedback, I'm always trying to get better across the board.

Comments

roumenguha•3d ago
Thank you! I'm excited to dig in

Show HN: Draw a fish and watch it swim with the others

https://drawafish.com
647•hallak•3d ago•185 comments

Does the Bitter Lesson Have Limits?

https://www.dbreunig.com/2025/08/01/does-the-bitter-lesson-have-limits.html
19•dbreunig•1h ago•13 comments

Deep Agents

https://blog.langchain.com/deep-agents/
61•saikatsg•2h ago•15 comments

I couldn't submit a PR, so I got hired and fixed it myself

https://www.skeptrune.com/posts/doing-the-little-things/
118•skeptrune•4h ago•52 comments

Gemini 2.5 Deep Think

https://blog.google/products/gemini/gemini-2-5-deep-think/
354•meetpateltech•10h ago•173 comments

Researchers map where solar energy delivers the biggest climate payoff

https://www.rutgers.edu/news/researchers-map-where-solar-energy-delivers-biggest-climate-payoff
11•rbanffy•1h ago•0 comments

Ask HN: Who is hiring? (August 2025)

111•whoishiring•6h ago•154 comments

Google shifts goo.gl policy: Inactive links deactivated, active links preserved

https://blog.google/technology/developers/googl-link-shortening-update/
134•shuuji3•3h ago•99 comments

Self-Signed JWTs

https://www.selfref.com/self-signed-jwts
34•danscan•3h ago•5 comments

Build an AI telephony agent for inbound and outbound calls

https://github.com/videosdk-community/ai-telephony-demo
21•sagarkava•2d ago•9 comments

Supporting the BEAM community with free CI/CD security audits

https://www.erlang-solutions.com/blog/supporting-the-beam-community-with-free-ci-cd-security-audits/
69•todsacerdoti•5h ago•13 comments

Make Your Own Backup System – Part 2: Forging the FreeBSD Backup Stronghold

https://it-notes.dragas.net/2025/07/29/make-your-own-backup-system-part-2-forging-the-freebsd-backup-stronghold/
67•todsacerdoti•3d ago•0 comments

Show HN: TraceRoot – Open-source agentic debugging for distributed services

https://github.com/traceroot-ai/traceroot
17•xinweihe•4h ago•2 comments

Hyrum's Law

https://www.hyrumslaw.com
75•andsoitis•6h ago•35 comments

Coverage Cat (YC S22) Is Hiring a Senior, Staff, or Principal Engineer

https://www.coveragecat.com/careers/engineering/software-engineer
1•botacode•4h ago

Ergonomic keyboarding with the Svalboard: a half-year retrospective

https://twey.io/hci/svalboard/
46•Twey•4h ago•14 comments

Launch HN: Societies.io (YC W25) – AI simulations of your target audience

57•p-sharpe•9h ago•39 comments

At 17, Hannah Cairo solved a major math mystery

https://www.quantamagazine.org/at-17-hannah-cairo-solved-a-major-math-mystery-20250801/
154•baruchel•4h ago•80 comments

Corporation for Public Broadcasting ceasing operations

https://cpb.org/pressroom/Corporation-Public-Broadcasting-Addresses-Operations-Following-Loss-Federal-Funding
450•coloneltcb•4h ago•439 comments

Ask HN: Who wants to be hired? (August 2025)

52•whoishiring•6h ago•135 comments

Replacing cron jobs with a centralized task scheduler

https://mayhul.com/posts/scheduled-tasks/
140•tlf•4d ago•73 comments

When Flatpak's Sandbox Cracks

https://www.linuxjournal.com/content/when-flatpaks-sandbox-cracks-real-life-security-issues-beyond-ideal
6•dxs•1h ago•3 comments

Fast (2019)

https://patrickcollison.com/fast
69•samuel246•6h ago•18 comments

Pseudo, a Common Lisp macro for pseudocode expressions

http://funcall.blogspot.com/2025/07/pseudo.html
56•reikonomusha•3d ago•4 comments

Bad UX

https://www.google.com/search?q=bad+UX
72•liquid99•2h ago•27 comments

Dynamic programming bursting balloons

https://sylhare.github.io/2025/07/29/bursting-balloons.html
5•ingve•2d ago•2 comments

Show HN: An interactive dashboard to explore NYC rentals data

https://leaseswap.nyc/analytics
62•giulioco•2d ago•44 comments

Our Farewell from Google Play

https://secuso.aifb.kit.edu/english/2809.php
197•shakna•12h ago•70 comments

Atlassian terminates 150 staff

https://www.cyberdaily.au/digital-transformation/12441-atlassian-terminates-150-staff-with-pre-recorded-video-will-be-largely-replaced-by-ai
172•speckx•2h ago•123 comments

OpenAI raises $8.3B at $300B valuation

https://www.nytimes.com/2025/08/01/business/dealbook/openai-ai-mega-funding-deal.html
165•mfiguiere•7h ago•179 comments