WesWorld

Included in the Dutch news summary was mention of the G-1s entering service.

These two planes are the G-1 versions the Dutch are placing in service in late 1934 and 1935 in conjunction with FW-187As they hope to order from Germany.

The primary version is the G-1A "Aircruiser", basically a fighter bomber. The G-1C is a "Heavy Fighter", The G-1A differs primarily in a larger nacelle, boasting a larger bomb bay, a second crewmen, and twin GAST MGs in a tail turret in comparison to the G-1C. These two versions share both engines (currently Jumo 211Bs) and wings. A second Aircruiser version, the G-1B, (not shown) is still in development with radial engines, currently attaining 287kts with a pair of 1,050hp P&W R-1830-66 Twin Wasps, but designed with the forthcoming Hercules in mind.

The G-1A and C are both equipped with twin 23mm Madsen cannon, and 4x 7.92mm MGs forward (as the historic plan), while the A has the addition rear twin GAST MG. Ammo is included in user weight, which includes an additional 50lbs for the radio, etc.

All performance specs are at max. weight.

=============================================

G.1 A

General Type:
Airplane = 1
Airship = 2
Orbiter = 3
1

Year of First Flight: 1933

Description

Carrier or Rough Field
Monoplane
Twin Fuselage

Aircruiser version of G.1, twin inline Jumo 211Bs, internal 440kg bombload, forward 4x7.92mm & 2x 23mm Madsen, rear twin GAST 7.92mm MG in powered turret. 2 man crew.



Characteristics:

Weight (maximum) 13,900 lbs
Weight (empty) 10,818 lbs

Length 36 ft
Wingspan 54 ft
Wing Area 384 sq ft
Sweep 3 degrees

Engines 2
Jumo 211B
Piston

1,183 hp
at 15,000 ft


Crew 2


Typical cost $0.060 million in 1934
Total number procured 160


Performance:

Top Speed 331 kts = 381 mph
at 15,000 ft
Mach N/A

Operational Ceiling 37,750 ft

Range 756 nm = 871 miles
with 1,133 lbs payload
1,197 lbs released at halfway point

Climb 2,380 fpm

Cruise 170 kts = 196 mph
at 15,000 ft

Corner Speed 232 KIAS =
292 kts at 15,000 ft
Mach N/A
Turning Rate 20.2 deg/sec
Radius 2,797 ft



Internal Data:

Intake / Fan Diameter 10 ft

Bypass Ratio 96.5

Engine Weight 1455 lbs
Overall Efficiency 23 percent

Structural Factor 1.00

Number of Wings 1
Number of Fuselages 2

Limiting Airspeed 390 kts
Wing Ultimate g Load 8.78 g
Wing Taper 0.3
Wing Thickness at Root 1.4 ft

Tail / Canard Factor 0.4

Number of Nacelles 1
Length 18.5 ft
Diameter 3.5 ft
Fullness 0.3

Fuselage Diameter 3.4 ft
Fuselage Fullness 0.1

Pressurized Volume 0 percent
Cargo Decks 0

Cleanness 79 percent
Unstreamlined section 1.9 sq ft

User equipment 1,940 lbs

=============================================

Aircraft Type or Name:

G.1 C

General Type:
Airplane = 1
Airship = 2
Orbiter = 3
1

Year of First Flight: 1933

Description

Carrier or Rough Field
Monoplane
Twin Fuselage

Fighter version of G.1, twin inline Jumo 211Bs, internal 200kg bombload, forward 4x7.92mm & 2x 23mm Madsen, 10mm armor.



Characteristics:

Weight (maximum) 12,200 lbs
Weight (empty) 10,251 lbs

Length 36 ft
Wingspan 54 ft
Wing Area 384 sq ft
Sweep 3 degrees

Engines 2
Jumo 211B
Piston

1,183 hp
at 15,000 ft


Crew 1


Typical cost $0.058 million in 1934
Total number procured 160


Performance:

Top Speed 337 kts = 388 mph
at 15,000 ft
Mach N/A

Operational Ceiling 40,000 ft

Range 756 nm = 871 miles
with 442 lbs payload
467 lbs released at halfway point

Climb 2,852 fpm

Cruise 180 kts = 207 mph
at 15,000 ft

Corner Speed 232 KIAS =
292 kts at 15,000 ft
Mach N/A
Turning Rate 23.2 deg/sec
Radius 2,439 ft



Internal Data:

Intake / Fan Diameter 10 ft

Bypass Ratio 96.5

Engine Weight 1455 lbs
Overall Efficiency 23 percent

Structural Factor 1.00

Number of Wings 1
Number of Fuselages 2

Limiting Airspeed 390 kts
Wing Ultimate g Load 10.00 g
Wing Taper 0.3
Wing Thickness at Root 1.4 ft

Tail / Canard Factor 0.4

Number of Nacelles 1
Length 12 ft
Diameter 3.5 ft
Fullness 0.3

Fuselage Diameter 3.4 ft
Fuselage Fullness 0.1

Pressurized Volume 0 percent
Cargo Decks 0

Cleanness 79 percent
Unstreamlined section 1.9 sq ft

User equipment 1,655 lbs

Interesting choice of the Gast gun as rear armament. Which one? The WWI 7.92x57 or just the name and mech in a new gun?

Performance seems good, especially speed, for such a large aircraft. I have my concerns over the structural strength which I've mentioned before.

The first G-1 I posted up a bit ago matched historical performance pretty well, so that part is close, but switching to much more powerful inlines with the new supercharger helped alot.

I don't recall your mention of structural concerns, but the historical G-1s were apparently well thought of and served until the German invasion, I expect them to be a pre-Lightning analog.

BTW, alternate performance specs,

Full fuel, ammo, no bombs
G-1A, max spd : 384mph climb : 2,674 fpm
G-1C, max spd : 389mph climb : 2,991fpm

light weight
G-1A, max spd : 389mph climb : 3,127 fpm
G-1C, max spd : 392mph climb : 3,446 fpm


The GAST is an updated vesion of the WWI weapon, still in 7.92x57. As you've pointed out in the past it's a marginal benefit, two single MGs would be simpler. However, in the constraints of the conical rear turret I figured the GAST would offer the best current means of more firepower. Considering the limited application, the limited additional fiscal cost would be acceptable.