#navigation

Planetary Classification

Planets are classified based on their geophysical and enviornmental characteristics.

Stellar Classification

For simple navigational purposes stars are classified using the Harvard spectral system based on spectral characteristics. Additional coding specific to luminosity (as used by the Morgan-Keenan MK classification system) is not used.

Class

Colour Temperature

Chromaticity

O

≥ 30,000 K

blue

B

10,000–30,000 K

Navigable Classification System

Star systems containing exoplanets are identified from Earth-based deep space observatories.

Stellar Cartography

Stellar cartography involes the identification of star systems and the mapping of their location so that vessels can naviagte to them.

Gimbal Limit Tables

The following tables show gimbal limits for helm maneuvers (in both drive and cruise modes):

Impulse Deceleration

Simulations have provided estimates of the distance to decelerate to all stop from various speeds  and at various thrust levels. The results provide a guide for quartermasters.

At impulse speeds Endeavour brakes by redirecting drive plasma forward to counteract the vessel’s momentum. The redirection reduces the efficiency of engine output in terms of applied thrust, meaning it takes longer to slow down than to speed up – about 25% longer.

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First Look at the Helm

Meet the flight operations console - more commonly referred to as “the helm”. It’s a multipurpose workstation that will allow a Quartermaster to fly the ship across three navigation modes. The current focus is on the most commonly used mode – impulse navigation.

Held Bearing Execution

A held bearing is where a set bearing is automatically executed every maneuvering cycle until stopped. This makes the vessel follow a circular course. This is useful for when a traversal maneuver is required, or when a large heading change needs to be broken down into smaller maneuvers.

The radius of the circular course is determined by the vessel’s speed and the chosen bearing. The Held Bearing Calculator (HBC) on the Impulse Maneuvering panel calculates the required bearing based on the desired course radius and vessel speed.

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Taking the Helm

Trainee quartermasters (helm operators) are now able to experience what it will be like to have a starship under their control. Engine prototyping has provided sufficient data to enable simulations of vessel maneuvering at impulse (sublight) speeds.

“We were anticipating the experience to be more like operating a large submarine,” says Master Chief Sonya Akakios, the ISDC’s most senior quartermaster. “What we’re actually seeing isn’t too far off that, with the most obvious difference being momentum.”

Navigation Branch

The Navigation Branch is responsible for maneuvering the vessel and ensuring it reaches it's intended desination.

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