WesWorld

Designs cooked up in planebuilder by Hood

Spartan Sp-20N Corsair III

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

Year of First Flight: 1940

Description

Carrier or Rough Field
Monoplane
Conventional Fuselage

A monoplane carrier-based fighter. Armament comnsists of four 13mm MG forward-firing in wings and two more in the upper fuselage. 5mm armoured bulkhead behind pilot.



Characteristics:

Weight (maximum) 7,500 lbs
Weight (empty) 6,287 lbs

Length 35.6 ft
Wingspan 36 ft
Wing Area 194 sq ft
Sweep 2 degrees

Engines 1
Spartan V12-2000-II-STS
Piston

2,000 hp
at 12,500 ft


Crew 1


Typical cost $0.044 million in 1939
Total number procured 500


Performance:

Top Speed 396 kts = 455 mph
at 15,000 ft
Mach N/A

Operational Ceiling 40,750 ft

Range 730 nm = 841 miles
with 150 lbs payload
159 lbs released at halfway point

Climb 4,160 fpm

Cruise 261 kts = 300 mph
at 20,000 ft

Corner Speed 287 KIAS =
307 kts at 5,000 ft
Mach N/A
Turning Rate 26.5 deg/sec
Radius 2,242 ft



Internal Data:

Intake / Fan Diameter 11.6 ft

Bypass Ratio 81.65

Engine Weight 1885 lbs
Overall Efficiency 22.5 percent

Structural Factor 1.00

Number of Wings 1
Number of Fuselages 1

Limiting Airspeed 500 kts
Wing Ultimate g Load 12.00 g
Wing Taper 0.2
Wing Thickness at Root 0.9 ft

Tail / Canard Factor 0.35

Number of Nacelles 0
Length 0 ft
Diameter 0 ft
Fullness 0

Fuselage Diameter 4 ft
Fuselage Fullness 0.33

Pressurized Volume 0 percent
Cargo Decks 0

Cleanness 85 percent
Unstreamlined section 1.5 sq ft

User equipment 950 lbs

Ripon-Bloch RB-137 Renegade III

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

Year of First Flight: 1939

Description

Conventional Aircraft
Monoplane
Conventional Fuselage

A monoplane short-range interceptor an armmament of four 12.7mm MG. Pilot proteced by 8mm armoured bulkhead.



Characteristics:

Weight (maximum) 7,000 lbs
Weight (empty) 5,416 lbs

Length 30.6 ft
Wingspan 35 ft
Wing Area 205 sq ft
Sweep 3 degrees

Engines 1
Ripon R-1500-004STS
Piston

1,500 hp
at 12,000 ft


Crew 1


Typical cost $0.038 million in 1939
Total number procured 500


Performance:

Top Speed 339 kts = 390 mph
at 12,500 ft
Mach N/A

Operational Ceiling 34,750 ft

Range 840 nm = 967 miles
with 300 lbs payload
325 lbs released at halfway point

Climb 3,085 fpm

Cruise 261 kts = 300 mph
at 15,000 ft

Corner Speed 255 KIAS =
305 kts at 12,000 ft
Mach N/A
Turning Rate 23.3 deg/sec
Radius 2,537 ft



Internal Data:

Intake / Fan Diameter 10.5 ft

Bypass Ratio 86.6

Engine Weight 1650 lbs
Overall Efficiency 22.5 percent

Structural Factor 1.00

Number of Wings 1
Number of Fuselages 1

Limiting Airspeed 500 kts
Wing Ultimate g Load 10.50 g
Wing Taper 0.2
Wing Thickness at Root 1.1 ft

Tail / Canard Factor 0.25

Number of Nacelles 0
Length 3 ft
Diameter 4 ft
Fullness 0.3

Fuselage Diameter 4 ft
Fuselage Fullness 0.3

Pressurized Volume 0 percent
Cargo Decks 0

Cleanness 85 percent
Unstreamlined section 2.75 sq ft

User equipment 800 lbs

Accrisius B-19
(appearance similar to Ju-388 with turret behind cockpit)

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

Year of First Flight: 1940

Description

Conventional Aircraft
Monoplane
Conventional Fuselage

A monoplane medium fast bomber armed with two dorsal 12.7mm in a streamlined turret, one nose 12.7mm MG and and a bombload of 4,000lbs. Self-sealing fuel tanks, 8mm armoured bulkhead.



Characteristics:

Weight (maximum) 25,000 lbs
Weight (empty) 14,838 lbs

Length 52 ft
Wingspan 70 ft
Wing Area 649 sq ft
Sweep 3 degrees

Engines 2
Ripon R-1800-009SS-HR/RL
Piston

1,800 hp
at 10,000 ft


Crew 4


Typical cost $0.086 million in 1940
Total number procured 500


Performance:

Top Speed 306 kts = 352 mph
at 15,000 ft
Mach N/A

Operational Ceiling 37,250 ft

Range 1,729 nm = 1,991 miles
with 3,521 lbs payload
4,001 lbs released at halfway point

Climb 2,862 fpm

Cruise 217 kts = 250 mph
at 15,000 ft

Corner Speed 243 KIAS =
305 kts at 15,000 ft
Mach N/A
Turning Rate 27.8 deg/sec
Radius 2,127 ft



Internal Data:

Intake / Fan Diameter 11 ft

Bypass Ratio 81.6

Engine Weight 1890 lbs
Overall Efficiency 22.5 percent

Structural Factor 1.00

Number of Wings 1
Number of Fuselages 1

Limiting Airspeed 350 kts
Wing Ultimate g Load 9.00 g
Wing Taper 0.3
Wing Thickness at Root 1.8 ft

Tail / Canard Factor 0.3

Number of Nacelles 2
Length 8.7 ft
Diameter 3.75 ft
Fullness 0.3

Fuselage Diameter 6 ft
Fuselage Fullness 0.42

Pressurized Volume 0 percent
Cargo Decks 0

Cleanness 79 percent
Unstreamlined section 4.5 sq ft

User equipment 1,700 lbs

I must say - the specs, particularly the speed, of the Spartan Sp-20N Corsair III look unusually optimistic for 1940, particularly in comparison to land-based planes in service around the world.

Something James noted when he designed it.

Sorry, I posted the wrong file, here is a slightly modified Corsair III file, still fairly fast though.

Spartan Sp-20N Corsair III

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

Year of First Flight: 1940

Description

Carrier or Rough Field
Monoplane
Conventional Fuselage

A monoplane carrier-based fighter. Armament comnsists of four 13mm MG forward-firing in wings and two more in the upper fuselage. 8mm armoured bulkhead behind pilot.



Characteristics:

Weight (maximum) 8,000 lbs
Weight (empty) 6,364 lbs

Length 35.6 ft
Wingspan 36 ft
Wing Area 194 sq ft
Sweep 2 degrees

Engines 1
Spartan V12-2000-II-STS
Piston

2,000 hp
at 12,500 ft


Crew 1


Typical cost $0.046 million in 1940
Total number procured 500


Performance:

Top Speed 392 kts = 451 mph
at 15,000 ft
Mach N/A

Operational Ceiling 40,500 ft

Range 753 nm = 867 miles
with 500 lbs payload
530 lbs released at halfway point

Climb 4,148 fpm

Cruise 261 kts = 300 mph
at 20,000 ft

Corner Speed 296 KIAS =
317 kts at 5,000 ft
Mach N/A
Turning Rate 27.4 deg/sec
Radius 2,240 ft



Internal Data:

Intake / Fan Diameter 11.6 ft

Bypass Ratio 81.65

Engine Weight 1885 lbs
Overall Efficiency 22.5 percent

Structural Factor 1.00

Number of Wings 1
Number of Fuselages 1

Limiting Airspeed 500 kts
Wing Ultimate g Load 12.00 g
Wing Taper 0.2
Wing Thickness at Root 0.9 ft

Tail / Canard Factor 0.3

Number of Nacelles 0
Length 0 ft
Diameter 0 ft
Fullness 0

Fuselage Diameter 4 ft
Fuselage Fullness 0.33

Pressurized Volume 0 percent
Cargo Decks 0

Cleanness 83 percent
Unstreamlined section 1.75 sq ft

User equipment 1,010 lbs

The Accrisius B-19 is far lighter than the cited exemplar, and while weight-savings are possible, I think a 5000 pounds is a lot. The performance is towards the upper end of the spectrum, but not impossibly so. However, 1940 does seem early; that said, given the speed of aircraft development in WW, a first flight is not impossible - though perhaps forced.

Quoted

Originally posted by thesmilingassassin
Sorry, I posted the wrong file, here is a slightly modified Corsair III file, still fairly fast though.

Again, I'd think performance is highly optimistic for a 1940 plane. It's nine MPH slower than a 1945 Sea Fury, and with 450 hp less; and 5mph faster than a late 1944 Vought F4U-4 (with 150hp less). Maybe 1942?

I don't really know why the Corsair III is so fast, I suspect I've cut the drag a little too much.

Really, now I think that planebuilder should no longer be used. Its easy to make a crappier planebuilder version of an OTL aircraft and likewise its too easy to over-compensate for its failings and produce corkers like the Corsair III and the He-100. I don't intend to do anything other than rough-and-ready estimations on planebuilder when complete OTL specs are missing for extrapolating data from now on.

Bruce, the B-19 looks like the Ju-388, it doesn't mean it is a Ju-388 in design or build etc. Its another Wesworld problem that people think the aircraft used in picutres are identical to the real thing. They are not, there are numerous Hawker Henley clones but none of them are identical.

So 1942 for the Corsair III, I can agree with that. The Accrisius B-19 isn't really meant to be comparable to a 388, the referance to the 388 is merely as a guide to appearance. No comments on the renegade III?

Seems to me like the Renegade III is a lively handler. Looks to be a great dogfighter.