Unlike games that often require the player to collect resources and build new units, Ground Control typically limits the player to the forces deposited on the planet's surface at the start of a mission.
The ABRS/GIS Flight unit was housed in the Express Rack on the ISS, and the Ground Control unit was housed in the Orbital Environmental Simulator (OES) at Kennedy Space Center.
The configurations of the Flight and Ground Control ABRS/GIS units were identical, although the aim of the imaging camera in the Ground Control GIS results in the capture of the plate image that is shifted about 3 mm compared to the Flight unit.
A few days later, investigators found the problem: the orbiter reported its thruster firings in newtons, the metric system's unit of force, while navigation software at ground control used pounds.
The Ground Control runs were conducted within a complete, second ABRS unit that was housed in the Orbital Environmental Simulator (OES) chamber in the Spaceflight Life Sciences Laboratory at Kennedy Space Center.
But Korda's narrative stalls when he injects the stories of pilots who fought in the Battle of Britain (he also heaps praise on the valorous men and women who staffed radar control towers, ground control rooms, maintenance crews and all the other units that combined to support Britain's aces in the air).
United Industrial's AAI Corporation unit, based in Hunt Valley, Md., makes aerospace and defense systems, including unmanned aircraft and ground control stations and countersniper devices.
Ground Control's "path-finding" -- the artificial intelligence that instructs your units how to negotiate terrain to reach a new location -- manages to carry out its tasks with realism that is impressive.
By the third day the flies from spaceflight had completely cleared all the bacteria, while the ground control flies still had a level of approximately 1,000 colony-forming units (CFU) per fly.
Both the flight and ground control components of the experiment were grown in specialized growth chamber units developed by Kennedy Space Center referred to as the ABRS Advanced Biological Research Systemm) growth chamber [ 30, 58, 59].
