Vehicles that can
fly can have different ways to
take off and land. Conventional aircraft accelerate along the ground until sufficient
lift is generated for
takeoff, and reverse the process to
land. Some aircraft can take off at low speed, this being a short takeoff. Some aircraft such as helicopters and
Harrier Jump Jets can
take off and land vertically. Rockets also usually take off vertically, but some designs can land horizontally.