Strange behavior with spot lights.

I haven’t been involved in CG for approximately seven years now. However, since my current development work benefits from creating my own 3D models, I am getting back into Blender. Last night I installed Blender and created a quick project, just to get started. Inside the engines of this primitive aircraft, I placed spotlights to simulate exhausts. However, whenever I render the scene from the front of the aircraft, the dispersion of the light emitted by the spotlights differs from the other angles.

Here is what I mean:

The two images on the left have the light being dispersed toward the front of the ship, while the side and the side-rear angles show the light being emitted and dispersed toward the rear of the ship, which would make more sense. I’m not entirely sure what’s going on.



I suggest creating an animation (with low samples for quickness) to see what exactly is going on. I don’t understand why the light is even showing on the hull of the plane, given that the turbines are facing directly downwards.