The word was coined in 1861 from the French 'helicoptere' meaning a devise for making aeroplanes rise perpendicular. However the experiment failed. The word transferred to helicopters in the modern sense when they were developed in the 1920's
Characteristic properties, I would imagine, are just like qualities. The charateristic of someone/thing that is a property that they have is otherwise known as a quality, for living beings, at any rate.
immortalizing
it is a biologically known fact, that right since the first living....
Secretive/Shy/Has many private plans. Someone to keep an eye on, as they could surprise you in their abilities. In sporting terms a dark horse is often a team that would not necessarily be among the favourites, but could potentially do well, though not enough is known about them to be certain.
AKA is short for "Also Known As" and denotes aliases used by someone.
No They wouldn't have.
no
No
The word was coined towards the end of the 19th century, so no.
There has been no helicopter by that name
Yes, a helicopter is known as a 'rotary wing aircraft'
It is known as "Marine One"
If the blades stop spinning on a helicopter while it is in the sky, the helicopter will enter a state known as autorotation. The helicopter will start to descend as the unpowered rotor blades rotate due to the upward flow of air. The pilot must carefully manage the descent and attempt to safely land the helicopter.
The last answer was answered by me.
rescue copter
Helicopter
That is the Chinook.