Search results
Results From The WOW.Com Content Network
FIRST Lego League Explore (FLLE) (formerly known as FIRST Lego League Jr.) is a non-competitive robotics program designed for children ages six to ten. It is one of the programs established by FIRST. [1] FIRST Lego League Explore follows the same theme given to the FIRST Lego League Challenge.
The airport was closed for a period of five days. Hurricane Wilma was a Category 2 when its center passed to the west of FLL. In February 2007, the airport started fees to all users, including private aircraft. FLL is one of the few airports to administer fees to private pilots. A minimum charge of $10 is assessed on landing private aircraft.
The 2007–08 Power Puzzle FIRST LEGO League World Festival and the 2008–09 FIRST LEGO League World Festival on Climate Connections were held again in the Georgia Dome and Georgia World Congress Center. Starting with 2010–11, FIRST LEGO League World Festival is held at the Edward Jones Dome and America's Center in St. Louis.
Hydro Dynamics is the name of the 2017/18 FIRST Lego League challenge. It focuses on the water cycle and the ways in which humans can influence it. [2] Each event consists of two main portions: the project and robot gameplay. Teams have fewer than ten weeks to prepare for their competitions. [3]
Until the advent of nuclear power, submarines were designed to operate on the surface most of the time and submerge only for evasion or for daylight attacks.Until the widespread use of radar after 1940, at night a submarine was safer on the surface than submerged, because sonar could detect boats underwater but was almost useless against a surface vessel.
Submerged floating tunnels can be anchored to the seafloor (left) or suspended from a pontoon (right) A submerged floating tunnel (SFT), also known as submerged floating tube bridge (SFTB), suspended tunnel, or Archimedes bridge, is a proposed design for a tunnel that floats in water, supported by its buoyancy (specifically, by employing the hydrostatic thrust, or Archimedes' principle).
If a submerged submarine faces a problem that prevents it from reaching the surface of the ocean, e.g. problems with the ballast tank, it can record a distress call on the buoy and launch it. The buoy will ascend to the surface and immediately activate the radio transmitter and send out the emergency message.
However, the presence of the submerged bridge structure limits the draft of vessels in the waterway. The term submersible bridge is also sometimes applied to a non-movable bridge that is designed to withstand submersion and high currents when the water level rises. Such a bridge is more properly called a low water bridge.