Delta-v planning
Use a quick orbital estimate (altitude plus losses) or enter your own total ascent delta-v.
v_circ = sqrt(mu / r)- Losses: drag + gravity + steering
- Stage split + feasibility check
Flight control aesthetic | real math | edge auth
Vehicle sizing that fits on one screen.
The Hangar is a practical two-stage sizing assistant: pick your assumptions, get a mass breakdown, check TWR, and generate a copyable mission packet.
Output
Mass breakdown
Stage dry/prop plus liftoff mass
Checks
TWR sanity
Liftoff and upper-stage start
Security
Server-side login
Signed cookie, edge middleware
The Hangar tool
A two-stage sizing assistant that turns assumptions into a deployable mission packet.
Mass breakdown
Given Isp and structural fraction, compute stage prop/dry and overall liftoff mass.
- Two-stage rocket equation sizing
- Impossible configs flagged
- Payload plus extras accounted
TWR sanity
Bring thrust (kN) and get liftoff and upper-stage start TWR as quick red/green checks.
- Liftoff thrust-to-weight
- Upper-stage start TWR
- Assumption transparency
Mission packet
Auto-generates a copyable brief you can paste into a doc, issue, or flight readout.
- Inputs plus computed outputs
- Units included
- Timestamped
How it works
It's intentionally first-pass: fast, assumption-driven, and honest about feasibility.
Two-stage sizing model
For each stage we solve for the stage mass that delivers the requested delta-v given Isp and
structural fraction. If your assumptions imply an impossible mass ratio, the tool calls it out.
Edge-first access
Login sets a signed session cookie. Middleware verifies it before serving anything under
/hangar.
Secure
HttpOnly
SameSite=Strict
About
This is a lightweight starter you can customize: drop in your projects, add more protected pages, or wire up a real identity provider later.
Next step
Set SITE_PASSWORD and AUTH_SECRET in Cloudflare Pages, then deploy.