Re: Please explain...
As others have already pointed out, a Harrier couldn't perform a vertical take off when fully loaded (it was more of a party piece), but could perform a short take off, using partly vectored thrust to provide extra lift on top of that generated by the wings.
For this same reason, Navy harriers that returned from sorties with a full weapons load and plenty of fuel remaining might be required to reduce weight by dropping external fuel tanks or weaponry in the ocean before they could land vertically.
Why the F-35 can't do a short take off on a normal runway instead of full vertical isn't clear.
Biting the hand that feeds IT
