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ddd3h/README.md
Daisuke Nishihama — Astrophysicist · Aerospace & Systems Engineer · CTO

Website Zenn Qiita X ORCID ResearchGate Email



Typing SVG

$ whoami — Daisuke Nishihama, CTO & Rocket Development Lead at Chart Inc., Ph.D. student in Astrophysics at The University of Osaka

  • 🚀  CTO & Rocket Development Lead — Chart Inc. (2024 – present)
  • 🔭  Ph.D. student, Astrophysics — Cosmic Evolution Group (OUTAP), The University of Osaka
  • 🛰️  Shipping avionics, telemetry links, ground stations and the simulations that design them
  • 🧮  Running cosmological & fluid simulations on supercomputers; HPC and cluster tuning
  • 🔐  Full-stack engineer with a security mindset — from bare-metal C to Next.js
  • 📍  Osaka, Japan  ·  🇯🇵 Japanese (native)  ·  🇬🇧 English (professional)

🛰️ Mission Domains

Rockets & Avionics · Space Comms & Networks · Defense-Grade Systems · HPC & Simulation · Data Analysis & ML · Full-Stack Systems

⚙️ Tech Arsenal

Languages C, C++, Rust, Python, Julia, TypeScript, JavaScript, Bash
Frontend Next.js, React, Astro, Tauri, Tailwind CSS, Vite, HTML, CSS
Backend & Data FastAPI, Node.js, Prisma, PostgreSQL, SQLite, Redis, Nginx
Science & ML scikit-learn, PyTorch, Anaconda, MATLAB, LaTeX  HDF5 LightGBM Optuna MLflow Prefect
Infra & Tools Linux, Docker, Kubernetes, Git, GitHub Actions, CMake, Vim, VS Code  MPI Slurm
Hardware Arduino, Raspberry Pi  LoRa UART / Telemetry Flight Computers

🚀 Featured Missions

🛰️ AetherLink
Modern ground-station GUI for open, extensible telemetry visualization.

TypeScript React Tauri
🚀 IgnisYeet
6-DOF rocket flight simulator with leapfrog integration and ECEF / geodetic output.

C 6-DOF
🌊 ff-room
3-D indoor airflow CFD: incompressible Navier–Stokes with Chorin projection on a MAC grid.

C++17 pybind11
🌌 nbody-collapse-hdf5
N-body gravitational collapse with HDF5 snapshot storage; cross-platform Makefile build.

C++ HDF5
📡 GrandGUI
Real-time UART telemetry dashboard — map, charts and status widgets, config-driven frame formats.

FastAPI React
🎈 Falling-position-simulator
High-altitude balloon landing prediction with Monte Carlo distributions and launch-condition optimization.

React FastAPI
🔲 systolic-mac-sim
Cycle-accurate systolic MAC-array GEMM simulator with design-space exploration, a pre-RTL proving ground.

Python Hardware Sim
🔍 ScopeFind
Incremental TUI code search for huge research trees; runs over SSH on supercomputers.

Python Textual
🦀 rs-pi
Arbitrary-precision π via the Chudnovsky algorithm, the method behind world-record digit counts.

Rust rug

🔭 Research

  • CROCODILE — cosmological hydrodynamic simulations: AGN feedback and circumgalactic-medium metallicity with top-heavy IMF models. 📄 Cosmic Himalayas in CROCODILE: Probing the Extreme Quasar Overdensities by Count-in-Cells Analysis and Nearest Neighbor Distribution (2025) — doi:10.3847/1538-4357/ae5798
  • ANCO-project — stratospheric balloon payloads with real-time image transfer over LoRa, custom GUI telemetry, radiation measurements. Communications team lead.
  • CORE / HIBARI — hybrid rocket and CanSat programs: simulation, electronics, recovery system design.
  • Member, Japanese Astronomical Society · Committee member, Ehime Nanyo & Japan–Mongolia joint balloon experiments.

📡 Telemetry

GitHub statistics
GitHub streak



Contribution snake

End of transmission — per aspera ad astra

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  1. CodeSubmitted4ex CodeSubmitted4ex Public

    Source code for computer experiment submission

    Julia

  2. iden-algorithm iden-algorithm Public

    Jupyter Notebook

  3. Akatoki-Saidai/GroundSystem_GUI_Project Akatoki-Saidai/GroundSystem_GUI_Project Public

    HTML 2

  4. ScopeFind ScopeFind Public

    ScopeFind is a lightweight TUI code search tool built with Python + Textual. It allows incremental literal search across project files with fast filtering and navigation.

    Python