Plane Force

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class HeadFlight : MonoBehaviour
{
    public float airSpeed;
    public float calibration;
    public Rigidbody plane;
    public Transform epty;
    public Vector3 fDirection = new Vector3(0, 0, 0);
    public float thrust = 1f;

    // Start is called before the first frame update
    void Start()
    {

    }
    void Update()
    {

    }

    // Update is called once per frame
    void FixedUpdate()
    {
        airSpeed = plane.velocity.x * 10000f;
        airSpeed = (Mathf.Round(airSpeed * 100f)) / 100.0f;
        if (Input.GetKey(KeyCode.E))
        {
            Debug.Log("E");
            plane.AddForce(fDirection.normalized * thrust, ForceMode.Force);
            //plane.AddForce(fDirection * thrust, ForceMode.Acceleration);
            //plane.AddForce(fDirection * thrust, ForceMode.Impulse);
            //plane.AddForce(fDirection * thrust, ForceMode.VelocityChange);
        }
    }
}