Question

True course 105°True heading 085°True airspeed 95 knotsGroundspeed 87 knots. Determine the wind direction and speed

Answer 1

The wind is blowing from the east at a speed of 8 knots.

Step-by-step explanation:

The wind direction and speed can be determined by analyzing the difference between the true course and true heading, as well as the difference between the true airspeed and groundspeed.

The difference between the true course and true heading represents the angle at which the wind is blowing from. In this case, the difference is 20 degrees (105° - 085°). Therefore, the wind is blowing from 20 degrees to the right of the heading (east).

The difference between the true airspeed and groundspeed represents the impact of the wind on the speed of the plane. In this case, the difference is 8 knots (95 knots - 87 knots). Therefore, the wind is causing the plane to slow down by 8 knots.

So, the wind is blowing from the east at a speed of 8 knots.

Answer 2

To determine the wind direction and speed, subtract the true heading from the true course. The wind direction is the result of the subtraction, and the wind speed can be found by subtracting the ground speed from the airspeed.

Step-by-step explanation:

To determine the wind direction and speed, we can use the concept of vector addition. The true course is the intended direction of the aircraft, and the true heading is the direction the aircraft points due to wind drift. The difference between the true course and true heading gives us the wind drift angle. To find the wind direction, we can subtract the heading from the course, and to find the wind speed, we can use the groundspeed and airspeed.

In this case, the wind direction would be 20° right of the nose (105° - 85°), and the wind speed would be the difference between true airspeed and groundspeed, which is 8 knots (95 knots - 87 knots).