Photos and videos where helicopter's main rotor emits light like an angel's ring

A helicopter is a type of aircraft that fly by rotating a rotor attached to the upper part of the fuselage, and unlike a general airplane, it is capable of vertical takeoff and landing and hovering, so it is used for various purposes. Of course, the military is also widely used for transportation and attacks, and it is also active in Iraq and Afghanistan, but in such sandy places, the rotating main rotor can emit light like a ring It seems there is.

Details are as below.
This videoHH-60HIt was taken with a night vision of the state of takeoff and landing of a rescue helicopter called as.
YouTube - Night vision HH - 60 H Landing

Approaching HH - 60H.


When the altitude is lowered, the circumference of the rotor begins to glow.


I draw nearly a circle.


It is still shining even at re-takeoff.


In addition, the following was taken by Mr. Michael Yon at Sangin in Afghanistan. In Afghanistan, the main road of transportation is a helicopter because the road is destroyed by enemy bombardment and bombs, which is a helicopter from Bastion garrison to Jackson Front Operation Base at nightCH-47It seems to be carrying out transportation using.

The Kopp-Etchells Effect

The landing posture of CH - 47 hanging baggage entered.


Sand dust is rolled up so that light grains can be seen.


CH-47 that further lowers altitude.


Both rotors with front and rear are wrapped in light.


Landing complete, loading work has begun.


I looked up at the descending CH - 47.


You can see the ring of doubled light.


Light as if it is illuminating with light.


According to Mr. Yon asking Jeff Mellinger's first senior high-ranking upper-ranking superior, this phenomenon is a phenomenon in which static electricity generated between a rotor blade of a rotating helicopter (made of titanium nickel) and dust wound up is visible, an airplane Although it can not be seen in takeoff and landing, it seems to be common. Mr. Yon took the name of two soldiers named Benjamin Cope and Joseph Eckels who died in the battle on this front line and calls it "Kopp-Etchells Effect (Cup · Ecklus phenomenon)" .