Simply put, this is an apron logo. H is the first letter of Helicopter (helicopter), indicating that this is the helipad, its apron compared to ordinary fixed-wing aircraft, is a rectangular area, with H marking can be very clear and easy to identify.
There is another point is that you try to see the bottom of the helicopter is not like a work, just can be straight down helicopter, and in line with the first letter of the English alphabet with the bottom shape, so that the direction of approach and landing with the H letter of the opening of the direction of the same, easy for pilots in the air to better observe the helicopter in the landing corrected landing point.
H as a customary sign, on board ships, buildings are used to mark the helipad, in order to be seen from afar, are generally marked in white, so that pilots can better observe in the air. In the outer circle of the H logo, but also very good, the circle is a universal logo, triangular used as an emergency emergency, and in the medical rescue apron, will be embedded in the center of the green apron with a white cross logo, the middle of a red capital "H" as if the bullseye in general. The green circle represents life and hope, while the red color represents emergency helicopter rescue.
You can see the two projects we built for the hospital and the commercial building, and the two H logos are different
Shengxiang Aviation & Beijing Changping Hospital
Shengxiang Aviation & Hangzhou Twin Towers