Hrafnagud
Posts: 87
Joined: 12/9/2018 Status: offline
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I calculate durability as a function of armour, self-sealing tanks, empty weight, gross weight, density, number of engines, and overall wing size. In the case of the F3F, as far as I am aware, it had neither armour (for game purposes) nor self-sealing tanks. If I am incorrect and the aircraft had both these features, the durability increases to 24. The factors influence the F3F's calculated durability (relative to the durability of all other aircraft in the game!) as follows: 1. It's quite a small aircraft - only 3,276 lbs empty. Vulnerable portions of the aircraft (engine, pilot, tail assembly) are proportionally quite large parts of the aircraft footprint. 2. For take-off, it added around 1,250 lbs of weight - of which around 850 lbs alone was flammable aviation fuel, and the rest also deemed mostly vulnerable/flammable (pilot, ammunition, oil). So a large proportion (over a quarter) of the combat-ready craft's gross weight is vulnerable/flammable. That counts against its overall durability. (Out of interest, using the same methodology for the F4F-7 - the flying gas tank - yields a durability of 19 for that aircraft). 3. It's a mostly metal construction, which helps, but overall it's not built to the same density as later designs. 4. Single engine - one critical hit on the engine and it goes down - but that is the same for all single-engine fighters. Multi-engine aircraft get a slight boost to durability in my mod. 5. It has quite large wing area (being a biplane) relative to its size, which helps durability. Again, you have to compare this relative to all other aircraft. The Swordfish II is rated at 20, the Vildebeest III at 21 in stock - and these are larger aircraft (larger structure to soak up more hits). Ultimately, the F3F-3 is similar to the A6M2 or the Ki-43 - if you score decent hits on the fuselage, you have a very high chance of scoring a critical hit (engine, fuel tank, pilot etc.) - but the problem is managing to get those hits in (it is a very agile aircraft below 10,000 feet). TL,DR: Very small aircraft, no armour and no self-sealing tanks.
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