Hello Donald McKinney Keeper of Traveller Errata,
I believe that Consolidated CT Errata version .07 page 31 entry for Missiles in Traveller (JTAS #21, Special Supplement 3, 1984) concerning the Page 3, Missile Identification correction needs a correction to the propulsion system.
Per Consolidated CT Errata:
"A 5G6 continuous burn (36 kg, Cr 3,600, TL 8).... missile, costing Cr 5,600 and massing 48 kg."
The following are the calculations I've made:
01. Model 5G6 max acceleration = 5G with fuel for a Burn of 6
Continuous Burn Casing Mass = G = 5 kg
Continuous Burn Casing Cost = 100 x Casing Mass = 100 x 5 = Cr 500
Fuel Mass = Burns x G = 6 x 5 = 30
Fuel Cost = 100 x Fuel Mass = 100 x 30 = Cr 3,000
Specification:
5G6 continuous burn propulsion system (35 kg, Cr 3,500, TL 8).
The corrected Continuous Burn Propulsion System Table entry on errata page 32 cross references from the Burn 6 row to the 5G columns as 35 and 3500 which appears to support the calculations made using the equations.
On the topic CT Special Supplement 3 Missiles & Consolidated CT Errata Piper indicated that the missile appeared to be 6G6. Unless my math is way off I don't believe the missile in the example is using a 6G6 system.
02. Model 6G6 max acceleration = 6G with fuel for a Burn of 6
Continuous Burn Casing Mass = G = 6 kg
Continuous Burn Casing Cost = 100 x Casing Mass = 100 x 6 = Cr 600
Fuel Mass = Burns x G = 6 x 6 = 36
Fuel Cost = 100 x Fuel Mass = 100 x 36 = Cr 3,600
Specification:
6G6 continuous burn propulsion system (42 kg, Cr4,200, TL 8).
The errata's corrected table numbers for a 6G6 propulsion system match the numbers
03.Model 6G5 max acceleration = 6G with fuel for a Burn of 5
Continuous Burn Casing Mass = G = 6 kg
Continuous Burn Casing Cost = 100 x Casing Mass = 100 x 6 = Cr 600
Fuel Mass = Burns x G = 6 x 5 = 30
Fuel Cost = 100 x Fuel Mass = 100 x 30 = Cr 3,000
Specification:
6G5 continuous burn propulsion system (36 kg, Cr 3,600, TL 8).
My third comparison with the corrected continuous burn propulsion system matched. Adding the specifications of the other missile components with a 6G5 continuous burn propulsion system results in a "missile, costing Cr 5,600 and massing 48 kg."
Recommendations:
1. Change 5G6 to 6G5, this way only two items change.
2. Change (36 kg, Cr 3,600, TL) to (35 kg, Cr 3,500, TL 8) and "missile, costing Cr 5,600 and massing 48 kg." to "missile, costing Cr 5,500 and massing 47 kg."
Actually, can you confirm that this all matches up to the 2011 revision of Special Supplement 3 re-released by FFE? The 1984 edition of SS3 has been replaced.
Back story: In 1986, a fan asked Marc a bunch of questions about SS3, and Marc sent him an extensive response, which largely replaced the whole work... but SS3 was never updated, and when Marc left GDW in 1990 the errata was lost -- until uploaded as a set of images by the fan who had received it. At the same time in 2011, I was trying to find a good proof of concept for the idea of redoing the CT materials in pure PDF (not scans, but rebuilt completely), and used the errata as a justification for the attempt.
So if this errata is derived from the published errata plus the original SS3, it might actually still be wrong. You need to work from the new SS3, and I haven't updated the compiled errata because it would almost mean putting the whole SS3-R into the errata document.