Rigidbody.inertiaTensor

Description

Диагональный тензор инерции массы относительно центра массы.

The inertia tensor is rotated by the inertiaTensorRotation. If you don't set intertia tensor from a script it will be calculated automatically from all colliders attached to the rigidbody. You can reset the inertia tensor to the automatically computed value by calling Rigidbody.ResetInertiaTensor.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    public Vector3 tensor;
    public Rigidbody rb;
    void Start() {
        rb = GetComponent<Rigidbody>();
        rb.inertiaTensor = tensor;
    }
}