Source: https://guthlabs.ai/docs/instruments/gyroscopic-precession-calculator/implementation/

instrument implementation / implementation-contract

# Gyroscopic Precession Calculator implementation

A source-bound implementation contract for Gyroscopic Precession Calculator; deployment and executable qualification remain separate.

Status: **VERIFIED_CLEAN**Lifecycle: **implementation-contract**

## Binding contract

This record describes what an executable surface must bind and validate. It does not claim that a public calculator, package, or production route is deployed.

**Record owner**: Guth Instruments

**Lifecycle**: verified-clean

**Evidence ID**: t5-043

**Effect**: Computation or source lookup only

## Input and validation requirements

A zero spin input produces division by zero and must be rejected. The specification also does not define a true piecewise formula branch or unambiguously define sign, unit, and directional conventions.

## Required corrections

No binding erratum is attached to this unique-name record. Implementers must still preserve the declared units, domain, and failure behavior.

## Inspectable interface fixture

The sample below is evidence for interface and validation tests, not a production implementation.

````
{
  "inputs": {
    "mass": 1.2,
    "r": 0.08,
    "spin_omega": 120,
    "I": 0.006,
    "units": "kg, m, rad/s, kg*m^2",
    "assumed_angle": "90 degrees",
    "g": 9.80665
  },
  "expected_outputs": {
    "Omega": 1.307553333,
    "Omega_unit": "rad/s"
  },
  "working": "tau=mgr=1.2*9.80665*0.08=0.9414384 N*m. I*omega=0.006*120=0.72 kg*m^2/s. Omega=tau/(I*omega)=0.9414384/0.72=1.307553333 rad/s."
}
````

## Other records

[01**Overview**](<https://guthlabs.ai/docs/instruments/gyroscopic-precession-calculator/>)[02**Mechanism**](<https://guthlabs.ai/docs/instruments/gyroscopic-precession-calculator/mechanism/>)[04**Qualification**](<https://guthlabs.ai/docs/instruments/gyroscopic-precession-calculator/qualification/>)

## Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

- `VERIFIED_LEDGER.json`

- `evidence-tranche5/tranche5-results.json`