Terl obar at 21:50, 5 April 2010

Terl obar — Mon, 05 Apr 2010 21:50:52 GMT

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	by [[Richard “Shadow Shack” Rose]]<br />		by [[Richard “Shadow Shack” Rose]]<br />
	Artwork by [[GJD]]		Artwork by [[GJD]]

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by [[Richard “Shadow Shack” Rose]]<br />
Artwork by [[GJD]]

Chemical drives burn solid oxygen, available at any
docking station or SCC at the cost of 10Cr per unit.
Fuel cost is doubled when taking off from a planetary
atmosphere, and external tanks must be purchased for
such duty. One external tank is required per drive in
order to double the fuel capacity; price of the external
tank is 10Cr per unit plus fuel. Tanks can be retained
and refilled rather than disposed with no penalty, or
removed and stored once docked at a space station.

As such, a ship equipped with
chemical drives will have a
maximum safe velocity, which can
be calculated by figuring half
the total fuel
capacity
divided by
the
number of
drives, and
divided again by
half. That number
will be divided
again by the
fuel
consumption
rate. This
figure
represents
the
number of
10,000km hexes the ship may travel per turn when
using the fold out map from the KH boxed set.

Note that if a ship accelerates beyond this maximum
safe velocity, it will not have enough fuel to decelerate
at its destination...hence the term “maximum safe
velocity”.

Note that the ADF for a ship equipped with the
specified amount and size drives will be 1. This can be
increased by a factor of 1 by doubling the number of
drives when applicable (no more than eight drives of
any type are permitted, so in cases where doubling the
number of drives exceeds eight this increase is not
possible), which increases fuel capacity and
consumption. Also, supercharged chemical drives have
been recently made available which increase ADF by a
factor of 1, which can be consecutively figured in (re: a
ship that requires two A drives can have four SC drives
with an ADF of 3). SC Chemical drives are only
available through a military contractor and are double
the standard price. Note that doubling the number of
drives can only be performed once for increased
acceleration by a civilian contractor, further doubling
will have no effect unless performed by a military
contractor. Again total number of drives must be
observed for such increases.

Also noteworthy is the deck arrangement of system
ships. Streamlined craft (available for system ships up
to HS:5) will typically have their decks parallel to the
main axis so as to permit movement when on the
surface. Larger craft will typically (but not always)
have the decks arranged perpendicular to the main
axis. The bulk of a system ship’s travel time will be
spent coasting at zero G, as it will spend considerably
less time accelerating to the maximum safe velocity (or
any other desired travel speed) than it will coasting
along to its destination. Larger craft boasting higher
fuel capacities will spend a little more time accelerating
than their smaller counterparts, and as such at ADF:1
(1G) the crew can travel about the craft under such
conditions...but once the desired travel speed is
reached it will spend the bulk of the trip
coasting along at zero-G.

Also note that if a ship
accelerates past 200
hexes per turn, it
will enter the
void...but
this is
unlikely to happen on most system ship designs
considering fuel capacities and consumption rates.
However, assuming if extensive fuel capacity
modifications can be made, it is possible to convert a
system ship into a starship. Also note that it is much
more cost efficient to use the Ion or Atomic drives for
such duty...

{| style="width:300px;"
|- style="color: white; background: navy; font-weight:bold;"
|Engine Size||Fuel Capacity*||Consumption Rate**||Cost (Cr)
|-
|'''A'''|| 12u|| 1|| 50,000
|- style="background:#eeeeee;"
|'''B'''|| 16u|| 2|| 100,000
|-
|'''C'''|| 20u|| 4|| 200,000
|-
|colspan="4"|* Multiply fuel capacity x HS for each engine
|-
|colspan="4"|** This is for each ADF point expended per dive<br />Note: Prices are the same regardless of SCC.
|}

Technical Journal: Chemical Drives - Revision history

Terl obar at 21:50, 5 April 2010

Terl obar: Created page with ' Top:Star Frontiersman main page | Up: Star Frontiersman Issue 14 main index | Up: [[Technical Jo…'

Terl obar: Created page with '
Top:Star Frontiersman main page | Up: Star Frontiersman Issue 14 main index | Up: [[Technical Jo…'