Make AJ37 or AJS37 variant

[NikolaiVChr]

@l0k1 is working on the AJ model. There are some issues to sort out before this can be done though.

The engine issue

The picture below details the RM-8A data from the AJS-37 manual:

What is strange is that the engine data of the RM-8B that should be more powerful, is even mentioned in the JA-37Di manual as seen below, is actually rated lower than the RM-8A. This is strange.

A/T = Auto-throttle

What is also strange is that every online reference and all the books about the Viggen gives these values for performance:

RM8A mil = 65,6 kN aug = 115,6 kN

RM8B mil = 72,1 kN aug = 125,0 kN

These values match the RM8A fine, but they are way higher for RM8B than what the manuals for JA-73C and JA-37Di state.

Another issue: Why is the above performance values not shown for 100% N2? The RPM for 100% is shown, so the engines must be able to do 100%, so why is the max performance quoted at 97.3% and 94.8%??

[NikolaiVChr]

Misc stuff to might differ

Store loadout. Radar range. 3D Model GUI menu name GUI help text HUD symbology Empty weight Fuel content

[l0k1]

For what it's worth, the AJ-37 model is complete (it can also double as an SH-37 model, I believe).

I am working on armament - I plan on the full suite of armament to be modeled as well. Once this is complete I'll submit the models.

One other issue that might pop up is re-working the gun code to accept 1 or 2 ADEN pods.

[NikolaiVChr]

Sounds great Pinto, this project is starting to give me headache though, researching fuel and engine.

I just found a leaflet from Saab (on my HD of all places).

It confirms the high numbers for the JA-37, which means it is underpowered in FG.

Why the hell does the JA manuals lie to the pilots...the AJS-37 pilots gets the right info...grrrrr

[l0k1]

Haha because they can't make it easy!

BK90 Mjolner is done - not going to do submunition per our discussion.

On the todo list is...

• [x] BK90 Mjolner
• [x] ADEN gunpods
• [x] RB04
• [x] RB05
• [ ] RB75
• [ ] M71 type 1
• [ ] M71 type 2

[NikolaiVChr]

Of the stuff I need to do:

• [x] JSBsim refactored into AJ and JA variant, including different engine and fuel contents.
• [x] Welcome message changed
• [x] Splashscreen for AJ37
• [x] Set file and model file refactored into variants.
• [x] Export the new AJ and JA model files.
• [x] GUI menu and help refactored into variants.
• [x] Different radar range

[l0k1]

Add to that todo list...

• [x] Disable Oerlikon

=]

[NikolaiVChr]

Okay I listed them here what you mentioned. If there is any mistakes please tell.

The checkboxes is for the firecontrol system, aerodynamic drag/yaw, missile stats and damage code.

• [x] RB-24 - Sidewinder (fuselage, inner pylons)
• [x] RB-24J Sidewinder (fuselage, inner, outer pylons)
• [x] M70 - ARAK Raketkapsel (364 kg) (fuselage and inner pylons) <-- weight to be changed in FG
• [x] RB-15F - Robot 15 (598 kg) (inner pylons)
• [x] BK M90 - Bombkapsel "Mjölner" (600 Kg) (inner pylons)
• [x] M55 AKAN "ADEN" (364 kg) (inner pylons)
• [x] RB04E - Robot 04 (620 kg) (inner pylons)
• [x] RB05A - Robot 05 (305 kg) (fuselage pylons)
• [x] RB75 - Maverick (210 kg) (fuselage, inner pylons)
• [x] M71 type 1 - Bomblavett "Virgo" (4 x 120 kg M63FFV explosive) (fuselage, inner pylons)
• [ ] M71 type 2 - Bomblavett "Virgo" (4 x 80 kg lightbomb) (fuselage, inner pylons)

[NikolaiVChr]

Lot of work, especially M71 those need a new type of firecontrol system I think.

[NikolaiVChr]

Mjölner Data:

Source 1 http://www.x-plane.org/home/urf/aviation/text/mjolner.htm

Length 3.505 m Span 1.000 m
Width 0.630 m Height 0.595 m, fuselage 0.320 m Weight 600 kg

Release altitude 30 - 500 m Release speed M 0.6 - M 0.9 Flight altitude 30 - 200 m, terrain following Range when launched at 50 m altitude and Mach 0.9 is more than 10 km in the direction the aircraft is flying

Source 2 http://cmano-db.com/aircraft/533/

BK 90 Mjolner Mk1 [72 x MJ1 Anti-Personnel] - (DWS.39) Guided Weapon Land Max: 14.8 km.

[NikolaiVChr]

AKAN Data:

Source 3 https://sv.wikipedia.org/wiki/30_mm_automatkanon_m/55

Vapentyp Automatkanon Kaliber 30 mm Piplängd 1,08 m Ammunition 30 mm x 113 Låsmekanism Revolverkanon Längd 1,59 m Vikt 87,1 kg Eldhastighet 1200-1700 rpm Mynningshastighet 741 m/s

Source 2 http://cmano-db.com/aircraft/533/

30mm ADEN Mk4 x 2 Burst [60 rnds] - (Aircraft) Gun Air Max: 1.9 km. Surface Max: 2.8 km. Land Max: 2.8 km.

Other source 220 gram rounds

[NikolaiVChr]

RB04E data:

Source 4 https://sv.wikipedia.org/wiki/Robot_04

Längd 4 453 mm Vikt 625 kg Spännvidd 1944 mm Diameter 500 mm Stridsspets trotyl Stridsspetsvikt 300 kg Tändrör zonrör Motor IMI Summerfield raketmotor Brinntid 43 s (04C) 65,6 s (04D, 04E) Målsökare aktiv radar Vapenbärare A 32 Lansen AJ 37 Viggen Prestanda Räckvidd 32 km Flyghöjd 10–15 meter Hastighet underljudsfart

[NikolaiVChr]

RB05A data:

Source 5 https://sv.wikipedia.org/wiki/Robot_05

Längd 3,6 meter Vikt 305 kg Spännvidd 0,8 meter Diameter 0,3 meter Stridsspetsvikt 160 kg Tändrör Anslagsrör Motor Vätskeraketmotor Målsökare MCLOS via radiolänk Vapenbärare AJ 37, AJS 37 Prestanda Räckvidd 9 km Maxhastighet supersonisk

[NikolaiVChr]

RB75 data:

Is probably AGM-65B version, which were developed in 1975 and Sweden ordered them that year.

Diameter 30 cm (12 in) Weight 210 kg (462 lb) Speed 1,150 km/h (620 kn) Range Greater than 22 km (12 nmi) Warhead 57 kg (126 lb) WDU-20/B shaped-charge Supersonic

[NikolaiVChr]

So I am thinking about making the HUD/loadout symbology consistent.

I think in the HUD there should be either RB-XX, M?? or AKAN (whether its pods or center mounted). And drop the KCA symbol.

In the loadout, I think it should be RB-XX or M??.

Or do you think we should say ARAK for rocketpods M70?

We could also change the loadout names to include both number and type, like:

M70 ARAK RB-24 Sidewinder RB-75 Maverick M55 AKAN M90 Bombkapsel

Or could flesh it out even more, and write info in english:

M70 ARAK Rocketpod RB-24 Sidewinder A/A RB-75 Maverick A/G M55 AKAN Cannonpod M90 Bombkapsel Clusterbombs

But that will maybe make it seem more gamey and less sim like. Not sure..

Would like the feedback of @l0k1 on this.

[NikolaiVChr]

As per our discussion:

RB 04E Attackrobot RB 05A Attackrobot RB 15F Attackrobot RB 24 Sidewinder RB 24J Sidewinder RB 71 Skyflash RB 74 Sidewinder RB 75 Maverick RB 99 Amraam M55 AKAN M70 ARAK M71 Bomblavett M90 Bombkapsel

[NikolaiVChr]

Just noticed picture on page 7 of this document. Notice the fins on the droptank:

https://drive.google.com/open?id=0B49qitQsNy34RnZISk9TWHcxVkU

[l0k1]

But what about page 5!?!?!

[l0k1]

It'd be easy to add in that top fin to the AJ drop tank

[NikolaiVChr]

Some do not seem to fit:

[NikolaiVChr]

I regard this issue as fixed.