Sunday 12 August 2012

Donovan - what the hell?

Colin Dunn recently asked a question about the Donovan class fighter in SotFA. This deserves a special prize for being possibly the most non-NAM design in any official book.

2300AD starships were written from the illustration. The author got the artwork and made a starship to fit. Liberties were often taken. For example, where the hell are the weapons, target array and sensors on the Wespe? If anything that ship looks like an assault lander, not a starfighter. Same for the Udet (which, oddly for a German starfighter has a French tricolor and has the unfortunate design feature of choosing whether to power the weapons or the engines). This is the picture in SotFA:


Now, we have two sets of surface features we can size the design on. (1) The turrets are 6m in diameter (as all turrets are) and (2) the missile banks are 6m x 4m (Ritage-1 bays are 1x2m each). The overall size of the sphere can be calculated at 24m. Internal volume is ~ 7,238 m3 or in traveller terms 517 dtons (round to 500 dtons). This clearly is not a drawing of a starfighter, but it is in fact a much larger vessel.

What else can we tell about the vessel? In order:

1. It has 4 turrets, each apparently a double turret.
2. It has UTES (no visible TTAs).
3. It does appear to have 24 missiles in something like a space VLS.
4. I would suggest this is the aft of the ship and the major sensor clusters are in the two remaining forward "sections.

The technology level of the ship is way above the level the design date implies. In 2213 the 1st Rio Plata War has just finished and whilst missiles have been introduced they're frankly useless. The Brazilian AAS-2 and the Argentine EM-1 are examples of this early generation of missiles and both are true "unmanned fighters" with a power plant supplying a single laser. The earliest nuke mentioned (with a small 2x2 warhead) is the AAS-4 of the 2230's. The drive is OM. The engine is apparently a NM MHD. The sensors are current generation, making this a 2270's era ship at the earliest.

On another note, the tactical systems (and navigation sensor) take up ~368 m2, with pylons and other bits you physically can't fit the fit onto a hull less than ~ 12 m in diameter (about 65 dtons), which seems to be about the size of the design in SotFA. The profile seems to have had the RCS multiplier used on it, and the surface fixtures.

We're now faced with a series of options when redoing the Donovan, and the most serious is does the picture or the write-up have priority? I'm going to assume the write-up does and write this up as a fighter, because it's the more interesting option.

The next question is what about the 24 missiles? These are such a core feature of the design that I think we have to keep them. However the two man crew is silly, as they can't operate the vast numbers of weapons systems incorporated into the ship. Since the original had cargo space (!) the crew will expand to keep up with the guns etc. As part of this more missile directors will be installed.




Stats
British Donovan Class "Fighter"


The Donovan-class fighter was originally built to police the inner portion of the solar system. Fighters of this type were maintained at stations orbiting Earth and other inner planets; they have no planetary takeoff or landing capabilities. From these orbiting stations, Donovan-class fighters could be scrambled quickly to deal with acts of piracy or smuggling, and they packed enough of a punch to be of use in wartime as well. As the years passed and new types of fighter were built, many of the Donovan-class ships were scrapped. A good number were shipped to British colonies along the French Arm, however, where they served in security forces.

A few unusual features about this fighter are worth noting. First, each carries 24 missiles, in two groups of 12. Rather than provide each group of missiles with one exit port—the standard configuration for missile-carrying fighters—each missile on a Donovan-class fighter has its own, separate bay. This means that any number of the missiles, from one to 24, may be fired at once. Historically, when fighting in the company of larger ships, Donovan-class fighters would rush in close to an enemy, fire off their entire load of missiles, and retreat behind their larger allies.

A second unusual feature is the manoeuvring thrusters on the ends of extensible arms. With the increased leverage provided by the length of these arms, Donovan-class fighters are able to make very precise manoeuvres while travelling at very high speeds. For quicker, less accurate, manoeuvres, thrusters are also built into the main hull.

Another unusual feature is the 14 man crew. Most starfighters have 2 or 3 men, but each man can only do one task at any one time, so in a 2-place fighter like a Martel one officer pilots the ship and the other can either attempt a sensor lock with one of the two installed sensors, or maintain a weapons lock on one target. The decision with the Donovan to have a full crew means no compromise is necessary. In fact the crew of a Donovan can even abandon their combat stations for damage control if necessary (typically 2 teams are available with the usual tactical usage).

Currently the remaining Donovan's are deployed to several British orbital forts and as carrier based heavy strike fighters. Using nuclear conversions of the French Ritage-1 (called Chevaline, with a 7x2 warhead and no sensors - the French equivalent uses a smaller warhead but retained the sensors) they are an exceptionally potent strike arm. British planners major worry is that these ships carry so much heavy ordnance that the loss of one with before weapons launch (and typically all weapons are launched simultaneously with four controlled by the crew, other by other Donovans and the main fleet) is a major loss of combat power. The future of this type of ship in RSN service is either replacement with a better protected vessel for deep penetration into the enemies rear area (the Tactical Strike and Reconnaissance programme - TSR) or complete retirement.

Streamlining: None
Original Design Date: 5th June, 2273
First Example Laid Down: 6th August, 2275
First Example Completed: 29th February, 2276 (a leap year)
Fleets in Service: Britain
Number in Service: Unknown


Performance 
Warp efficiency: 3.26 full engines with missiles, 2.43 all tactical systems powered up with missiles, 3.76 full engines after launching all missiles
Power Plant: 10 MW MHD Turbine Fuel: 14 tons (15 hours)
Range: N/A Mass: 575 tons fuelled, exclusive of 265.68 tons of ordnance commonly carried
Cargo Capacity: none Crew: 14 (Pilot, Commander/Navigator, Communicator,Computer, Active Operator, Passive Operator, 4 Fire Control and 4 Remote Pilots); Passengers: none
Comfort: 0
Emergency Power: -
Total Life Support: N/A
Cost: MLv19.9 without ordnance (4 TCs etc.)


Ship Status Sheet
Move: 5-8
Screens: 0
Radiated Signature: 3
Radial Reflected: 4
Lateral Reflected: 4
Target Computer: +1
Radial Profile: -1
Lateral Profile: -1
Armour: 4
Hull hits: 24/12/6 (standard rules)
Power Plant Hits: 20/4
Active: 10
Passive: 10
Other: Agility 7

Weapons
4x1+1 lasers in masked turrets with UTES (1238, 1278, 4567, 3456)

Ordnance Load
24 Ritage-1 type missiles (launch all in single turn)

Sensors and Electronics
Active-10, Passive-10, Navigation Radar
Crew Hits: Pilot, Commander/Navigator, Communicator,Computer, Active Operator, Passive Operator, 4 Fire Control and 4 Remote Pilots
Damage Control: See below

Wednesday 1 August 2012

Colonial Populations (1): Introduction and Neubayern



I have issues with the Colonial Atlas, or rather with a few of the articles in it. Specifically two writeups don't follow what is written elsewhere and make little sense, whilst another two don't fit descriptions but are less problematic. In fact there is also a systematic problem which I'll address, and I'll address that first.




1. No-one dies.




GDW wrote some fairly sensible rules about population growth. The population of a colony naturally inflates at 4% per year for the first 50 years and then 2% per year thereafter. This is reasonable as it starts to assume people start dying of old age (in fact I'd argue that after 100 years this should drop to 1%). However the tables supplied don't follow this rule for light and heavy efforts. The population keeps expanding an no-one dies.




Kevin Clark noticed this a long time back. Kudos to him.




The compound interest effect of this is huge, and is the root cause of our next problem child:




2. Neubayern




85 million people? Frankly I'm gobsmacked and call "bullshit" on that one, especially in light of the nature of the planet (a tidelocked hellworld with a small livable peninsula). It's worth noting that Neubayern in both the DG and CA is mentioned to be a sparsely settled agricultural world supporting some (largely defunct) insystem mining with food. The primary export is textiles from a local wool.




I can see how this figure was reached. The author of the article (Loren K. Wiseman) set up Neubayern as a "heavy effort" colony and kept inflation at 4%, even past 100 years, the end of the table. If we correct the "4%" error the population of Neubayern the population drops to ~ 18 m.




In fact I'd go further. Several times with population the simple mistake of putting adding a zero was made by GDW (Manchuria especially, whose 2.7 billion implies the population has grown 22 times. Nice, but all the fertile livable land is actually in the 2300 nation of Canton). This would make Neubayern a respectable colony of a little over 8 m people. This is a reasonable fix. In fact I posted my notes on the colony to 2300noncanon ten years ago:




Niebelungen: Bavaria’s First National Colony

Niebelungen was the first colony established independently by Bavaria in 2169, only 2 years after
the establishment of their portion of the ESA claim on Tirane. Bavaria took great pride in this world, found
by the AR-I in 2142, it has parts as almost as habitable as Terra. Even better, tantalum was found on
one of the other worlds in the system, and Bavaria made vast sums of money by charging the various
nations and corporations who came to mine the precious metal for services. Today, Niebelungen is a colony of the new Germany, but fiercely independent, pledging alligence but brooking no interference from Berlin.

The world of Niebelungen

Niebelungen is the first world of the Neubayern system, and is tidally locked to Neubayern. His
presents many problems for human colonisation. Physically, Nibelungen is just under 8,000km in
diameter, with a density roughly equal to Earth. The atmosphere is quite thin, roughly 60% of that of
Earth, and the partial pressure of oxygen is only 0.09 atm, making it only bearly breathable for people who haven’t adapted. Non-natives need respirators.

The geography of the planet is strange, consisting of 6 distinct regions: Hotside, Coldside, Westmeer,
Eastmeer and the 2 Icecaps. The two Oceans occupy most of the habitable belt of the planet, where liquid
water can exist freely, while the separated from each other by the icecaps. The hotside is a vast desert,
with an indentation at the equator where the Ostmeer extends into the region. The coldside is covered by a vast icesheet, and rarely reaches temperatures above –40 centigrade. The environment is similar to
Antarctica on Earth.

The colony

The Twilight Zone is where most of the colonists live. There are two separate livable areas, the Ostmeer and Westmeer, and most Terran life lives on the islands in these two seas or on the shores of it. The colony is situated in the Ostmeer area, the Westmeer is essentially uninhabited.

The Ostmeer is a roughly rectangular sea around 1,000 km across and about 6,000 km from North to South, almost cut in half by the Grosshalbsiel, a huge peninsula jutting out of the Hotside creating by far
the largest living area on the planet, where the main colony site is located. The colony is situated in a
vast grassland used to grow Wollgrasse, Niebelungen Cotton which is the colonies main export, growing on the Eastern and Northern shores, while much of the Southern shores and interior are used for grain and cattle.

Minerals, unfortunately, only exist in quantity on the coldside, where Vulcanism forced them to the surface, only to be buried under a kilometre of ice. This has stopped much of the industrial progress made by the colony, which has never had much of a manufacturing base (which has built mainly on Tirane and Hochbaden) beyond textile processing and tantalum extraction on Wiesbaden, a failed core. It is a rich world though.

Local military presence

Niebelungen currently has no major naval bases, and no DSKM squadron is stationed there (Invasion), the
colonists have a very active militia though.

The people

The inhabitants of Niebelungen look quite strange compared to the terrestrial norm. Their average height
is 7 feet and their chests are enormous, a consequence of the low partial presence of oxygen which requires a much larger lung capacity. Their skins are also quite dark, giving them a Mediterranean look.

Currently, of the 8,500,000 population, 11% are white South African Afrikaners.