Envelope temperature for a target lift

Extraits de code

curl "https://api.oanor.com/hotairballoon-api/v1/required-temp" \
  -H "x-oanor-key: oanor_test_..."

await fetch("https://api.oanor.com/hotairballoon-api/v1/required-temp", {
  headers: { "x-oanor-key": "oanor_test_..." }
});

$ch = curl_init("https://api.oanor.com/hotairballoon-api/v1/required-temp");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);

import requests
requests.get(
    "https://api.oanor.com/hotairballoon-api/v1/required-temp",
    headers={"x-oanor-key": "oanor_test_..."}
)

Exemple de réponse

Une réponse réelle de ce endpoint, capturée lors du dernier contrôle de santé.

{
    "data": {
        "note": "To carry a target gross lift the inside air must drop to a density of outside − lift ÷ volume, which fixes the envelope temperature via the ideal-gas law. If that comes out above ~120 °C the standard nylon envelope cannot take it — you need a bigger envelope, a lighter load or a cooler/denser-air day. This is the everyday pre-flight check: can the balloon lift the planned crew and fuel today?",
        "inputs": {
            "volume_m3": 2500,
            "pressure_pa": 101325,
            "ambient_temp_c": 15,
            "required_lift_kg": 600
        },
        "feasible_for_nylon": true,
        "required_internal_temp_c": 85.2,
        "required_internal_density_kg_m3": 0.985
    },
    "meta": {
        "timestamp": "2026-06-07T08:18:01.472Z",
        "request_id": "fb0a3af6-d8c5-4451-a81a-f584ce1a23fd"
    },
    "status": "ok",
    "message": "Required temperature",
    "success": true
}