Turn rate & radius API

Computes turn rate, radius, load factor and full-turn time from TAS plus either bank angle or desired turn rate (defaults to standard rate). Answers 'What bank gives a standard-rate turn at 120 kt?', 'What is the radius of a 30-degree banked turn?'.

Price$0.04per request

MethodPOST

Route/v1/nav/turn-performance

StatusLive

MIME typeapplication/json

Rate limit120/minute

Cache0s public

aviationturn-rateturn-radiusstandard-ratebank-angleload-factormaneuverg-force

API URLhttps://x402.hexl.dev/v1/nav/turn-performance

Integration docs

Example request

{
  "trueAirspeedKt": 120,
  "bankAngleDeg": 30
}

Example response

{
  "bankAngleDeg": 30,
  "turnRateDegPerSec": 5.255,
  "turnRadiusM": 673.1,
  "turnRadiusNm": 0.3634,
  "turnDiameterNm": 0.7269,
  "loadFactorG": 1.155,
  "timeForFullTurnSec": 68.5,
  "interpretation": "30 deg bank -> 5.3 deg/s, radius 673.1 m (0.363 nm), 1.15 g."
}

Input schema

{
  "type": "object",
  "required": [
    "trueAirspeedKt"
  ],
  "properties": {
    "trueAirspeedKt": {
      "type": "number",
      "examples": [
        120
      ]
    },
    "bankAngleDeg": {
      "type": "number",
      "examples": [
        30
      ]
    },
    "turnRateDegPerSec": {
      "type": "number"
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}