WesWorld

Fokker-Avia Aircraft 1937-1942

The following planes were offered from 1937-1942 by Avia Aviation of Czechoslovakia. Avia’s designers have access to the aviation laboratories in Rotterdam through their Fokker affiliates.

Avia is willing to sell planes with customer’s native weaponry or engine preferences if requested. As a neutral, Czechoslovakia allows export to all nations.

Fokker-Avia B.90 Transport
1937 stats
The B.90 has it’s roots in the Fokker Arend F.36 airliner, and retains it’s robust undercarriage, giant 70” Dunlop tires and ability to operate from mud airstrips. The 2.4m wide fuselage with cargo deck allows light vehicles and artillery pieces to be accommodated. A dorsal track & cable system allows cargo to be hoisted and then

The B.90 has a 58 foot cargo deck and can carry 4000kg of cargo or be fitted for 32 passengers and fly at 300kph for 2,222km. More cargo or passengers can be accommodated for shorter ranges.

Crew : 3
Length: 23.59 m (77 ft 5 in)
Wingspan: 36.05 m (118 ft 3 in)
Wing area: 191 m² (2,053 ft²)
Empty weight: 11,384 kg (25,098 lb)
Max takeoff weight: 19,500 kg (42,990 lb)
Powerplant: 3 x 1290hp Avia Faucon I 14-cylinder radials
Maximum speed: 409km/h (254 mph)
Range: 2,222 km (1,381 miles)
Service ceiling: 10,700 m (35,000 ft)
Wingloading Loaded / Empty : 20.9 lbs/ ft², 16.06 lbs/ ft²
Armament: None

Capacity:
Cargo :
4090kg for 2,222km / 5200kg for 1,500km / 6020kg for 1000km / 6875kg for 500km
(9,000lbs for 1380mi / 11,470lbs for 932mi / 13,275lbs for 621mi / 15,162lbs for 310mi

Seats for passengers may be installed at a rate of roughly 1/125kg(250lbs) to a maximum of 54 passengers

Cost 1937: $124,000
Cost 1942: $138,000

Fokker-Avia B.159 Dive Bomber.
1938 stats
Developed to meet a perceived market for a dive bomber, the plane is built around a large radial engine and designed for repeated short sorties. Expecting rapid short range sorties, a radius of 185nm leaves a 25% reserve. Moving to heavier MGs firing API ammunitions, the plane features 4x13.2mm fore, 1x flexible 13.2mm aft. Self sealing tanks, armored windscreens, and 10mm armor plating before and after the crew complete the aircraft.

Crew : 2
Length: 8.84 m (29 ft 0 in)
Wingspan: 12.5 m (41 ft 0 in)
Wing area: 26.85 m² (289 ft²)
Empty weight: 3,362 kg (7,041 lb)
Max takeoff weight: 4,581 kg (10,100 lb)
Powerplant: 1 x 1375hp Avia Faucon II 14-cylinder radial
Range: 857 km (534 miles)
Maximum speed: 526km/h (327 mph) @ 4000m
Service ceiling: 10,700 m (35,000 ft)
Rate of climb : 615 m/m (2,019 ft/m)
Wingloading Loaded / Empty : 35.0 lbs/ ft², 31.2 lbs/ ft²
Armament: 4x13.2mm fore, 1x flexible 13.2mm aft, 450rpg
Armor : Windscreen, 10mm around engine, 10mm disk aft, self sealing tanks
Payload : 1x500kg or 2x250kg, or 5x100kg bomb at 448km (278miles)
Cost 1938: $41,000

1942 stats
Empty weight: 3,505 kg (7,728 lb)
Max takeoff weight: 5,080 kg (11,200 lb)
Powerplant: 1 x 1735hp Avia FauconXVII 14-cylinder radial
Maximum speed: 574kph (357mph) @ 4000m
Service ceiling: 10,820m (35,500ft)
Rate of climb : 813 m/m (2688 ft/m)
Payload : 1x800kg or 2x400kg, or 4x 200kg, or 5x150kg bomb at 448km (278miles)
Cost 1942: $49,000

Fokker-Avia B.161 Schnell bomber.
1939 stats
In the conflict over Grand Uraguay, fast penetrating raids by bombers against high value targets proved very difficult to intercept and defeat. With a high maximum speed and cruise speed, the available time to intercept the bomber was limited. Expecting that nations may desire to emulate this model, Avia decided to develop a fast bomber. This proved more difficult than expected.

Desiring a good bombload and range, 2 tonnes at 1,000km was settled on. Minimal defensive armament and armor was provided to deal with any fighters that proved to be in their path. If only two were used, available engines could not propel the bomber at acceptable speeds, while 4 nacelles added considerable weight, cost and frontal area for a minimal bombload than normally found on heavy bombers.

So the Avia designers, probably influenced by their time working with Fokker engineers, settled on a twin-boom, central nacelle design with three engines- two pullers fronting the booms, and a pusher on the nacelle. While the pusher would only be 80% as effective due to disrupted airflow, the additional power came with no additional frontal area, and added considerable to performance. Adopting an oval cross-section for the fuselage, narrowing down in a teardrop towards the pusher, aided airflow to the prop, and allowed turrets to be placed on the top & bottom of the oval where they could fire past the blades.

Crew : 5 : Pilot, Copilot/radio, Bombardier/Navigator, Engineer/Dorsal gunner, Radio/Ventral gunner. Option for 6th crewmember.
Length: 16.74 m (55 ft 0 in)
Wingspan: 17.98 m (59 ft 0 in)
Wing area: 60.29 m² (649 ft²)
Empty weight: 8,292 kg (18,281 lb)
Max takeoff weight: 13,749 kg (30,313 lb)
Powerplant: 3 x 1517hp Minerva Paladin II v14-cylinder inline
Range: 2000 km (1,242 miles)
Maximum speed: 617km/h (384 mph) @ 5000m
Service ceiling: 11,430 m (37,500 ft)
Rate of climb : 826 m/m (2,711 ft/m)
Wingloading Loaded / Empty : 46.7 lbs/ ft², 37.9 lbs/ ft²
Armament: 4x13.2mm fore, Twin 13.2mm Turrets dorsal/Ventral 450rpg
Armor : 10mm bulkhead behind cockpit, self sealing tanks
Payload : 2500kg at 1,000km (621mi), or 3,500kg at 500km (310mi)
Cost 1939: $126,000

1942 stats
Powerplant: 3 x 1643hp Minerva Paladin IV v14-cylinder inline
Maximum speed: 663kph (412mph) @ 6000m
Service ceiling: 11,887m (39,000ft)
Rate of climb : 813 m/m (2995 ft/m)
Cost 1942: $135,000

Fokker-Avia B.142 Interceptor
1940 stats
Designed as a short range, high speed bomber interceptor, this plane is a big engine small bodied sports car of a plane, armed with multiple cannons generate a large number of 20mm hits per firing pass. The fairly high wingloading would prove limiting in a traditional lower elevation dogfight, but this is of less import at altitude and for bomber-hunting, where energy fighter tactics are envisioned.

Crew : 1
Length: 9.14 m (30 ft 0 in)
Wingspan: 9.45 m (31 ft 0 in)
Wing area: 14.59 m² (157 ft²)
Empty weight: 2,588 kg (5,705 lb)
Max takeoff weight: 3,200 kg (7,055lb)
Powerplant: 1 x 1517hp Minerva Paladin II v14-cylinder inline
Range: 896 km (557 miles)
Maximum speed: 691km/h (429 mph) @ 5000m
Service ceiling: 12,192 m (40,000 ft)
Rate of climb : 1064 m/m (3,490 ft/m)
Wingloading Loaded / Empty : 44.9 lbs/ ft², 44.2 lbs/ ft²
Armament: 3x20mm 120 rpg, 2x13.2mm 450rpg
Armor : Windscreen, 10mm around engine, 10mm disk aft, self sealing tanks
Payload : None.
Cost 1940: $37,000

1942 stats
Powerplant: 1 x 1643hp Minerva Paladin IV v14-cylinder inline
Maximum speed: 713kph (443mph) @ 6000m
Service ceiling: 12,497m (41,000ft)
Rate of climb : 1168 m/m (3,833ft/m)
Cost 1942: $39,000


Fokker-Avia B.144 Fighter
1941 stats
Designed as a general purpose fighter, it is a well rounded machine. Choosing to use a heavily cowled radial in the pattern of the FW190 and Renard R37, this also means there will be competition with the B.142 for engines. Further, the Faucon can be swapped out for Gnome-Rhone, Bristol and Pratt&Whitney engines of similar diameter, allowing customers to match existing equipment if so desired. .

Crew : 1
Length: 8.23 m (27 ft 0 in)
Wingspan: 10.36 m (34 ft 0 in)
Wing area: 23.32 m² (251 ft²)
Empty weight: 3,184 kg (7,019 lb)
Max takeoff weight: 3,992kg (8,800lb)
Powerplant: 1 x 1735hp Faucon XVII v14-cylinder radial
Range: 1100km (684miles)
Maximum speed: 690km/h (429 mph) @ 6000m
Service ceiling: 11,430 m (41,000 ft)
Rate of climb : 956 m/m (3,138 ft/m)
Wingloading Loaded / Empty : 35 lbs/ ft², 33 lbs/ ft²
Armament: 1x20mm 250 rpg, 4x13.2mm 600rpg
Armor : Windscreen, 8mm around engine, 8mm disk aft, self sealing tanks
Payload : 2x100kg
Cost 1941: $49,000
Cost 1942: $50,000


Minerva -Avia Engines
Minerva -Avia Engines
Two Engines are used, a radial and a inline. The radials are primarily built in Czechoslovakia, and both home designed and licensed copies. While Avia OTL did build licensed copies, here the newer inlines are developed in Belgium by Minerva and built at both Belgian and Czech factories. These engines are available for export independent from the aircraft.

Minerva automobiles and Fokker-Avia teamed up for joint engine design in the mid 1930s. Minerva was known for it’s quality and “Knight” auto engines, essentially being a Belgian Rolls–Royce.

While Minerva cut it’s teeth on licensed copies of the Hispano-Suiza 12Y, it has developed it’s own follow on, analogous to an enlarged (+26%) Klimov M-105, the “Paladin”.

In the 1930s, maximum supercharging for Wesworld Avia is limited to 4,000 and 5,000m. In the 1940s this creeps up to 6,000m before Avia finally develops a three-stage supercharger. This means that Avia planes suffer a performance loss at the very highest altitudes, but are quite competitive at common altitudes.

Generally speaking, these engines are merely +2 to OTL, not +3.

“Faucon” :
Wesword
Date OTL engine & HP.
1937 Faucon I : 1290
1939 Faucon II : 1375
1940 Faucon VI : 1650
1941 Faucon XVII : 1735

“Paladin”

Klimov M-105, 1266lbs 94 octane
WW-3 : OTL hp
1937 : 1050
1938 : 1200
1939 : 1260
1940 : 1300

Which gives a 1600lb
WW-2
1938 Paladin I : 1327
1939 Paladin II : 1517
1940 Paladin III : 1592
1941 Paladin IV : 1643

I've put this excellent stuff into the NPC thread and added the B.90 to the airliner thread.

Thank you Hood.

Though looking back, I see why I should never proof read my own work. I tend to start cutting and pasting and trying different word orders, leading to some odd - or wrong- phrasing.

The B.144
"this also means there will be not competition with the B.142 for engines".. is missing the not

while the B.161 has "added considerable to performance." which probably started as something like 'a considerable boost to performance', but should now say 'considerably"

In other news, I tried dropping a Paladin IV into a D.XXIII as the "E" variant, and boosted the supercharger to 7500m...boy that thing gets up and goes - 4,391f/s climb and 497mph @ 24,606ft. 20mph faster than a Do335, which makes sense- same engine power but far lighter armanent & payload allows 2/3rds the weight.

edit : Interestingly, if I drop the supercharger to 21,300/6500m- like the Do335, then the top is 478 vs the Do335's 474. Maybe I'm penalizing the rear pusher engine too much... naw it's because the Do has a more streamlined presentation, the D.XXIII is a mid 1930s build with has a bigger overall fuselage cross-section to address radiator cooling area issues.

Sorted those errors Kirk.

The D.XXIII improvements sound excellent, certainly a world-leading aircraft even in WW.