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2.75 inch Rocket Launchers


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#1 ravenclaw_007

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Posted 06 August 2015 - 12:49:20 PM

i´m currently working on the 2.75 inch rockets and the LAU-3 rocket launcher and i found some problem here

 

the flight manuals i have mention this 2.75 inch warheads M151 / M156 / M247 / M274 / Mk67 / WDU-4A / WTU-1B all of this warheads are short in lenght and fit perfectly in to a LAU-3 rocket  launcher with a nose cover

but as i mention above i rework all rockets and so i made the M229 / M259 and not yet done are the M261 / M267 / M264 / M255 / M257 and M278 this warheads are all long and will stick out of the launchers nose cover

 

now my question why on earth do we have in game this LAU-3 (and other) launchers with rockets that never fit in to it ???

are this long warheads only for Army launchers without any nose cover as i mention above the long warheads are not mention in any fighter weapons manual i have ???

another possibility is that the dimensions i have for the LAU-3 are wrong , if anybody has reliable info on this dimensions that would help

 

 

the 2 rockets on the left are to long for the LAU-3

Image1.jpg

 

and that is the result

Image2.jpg

 

 

any help or info are more than welcome

 

 

 

 


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#2 yakarov79

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Posted 06 August 2015 - 01:44:19 PM

Lau launchers are in few "sizes" . I think it also depends on manufacturer.  I wil try to find something in my "library"

New Lau are capable of firing Mk40 and mk66 motors and are sligltly longer than old ones. but also there are few sizes (but some sources says that ther is only one size)

I think i never seen army launchers with covers.

Navy launchers have larger radius.

 

Problem wirh sources about rockets is that you are not sure which fuse was measured.

So need to measure fuse-warhead-motor.

 

By the way nice job with those rockets.


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#3 ravenclaw_007

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Posted 06 August 2015 - 02:39:59 PM

for the rockets i have pretty good material including drawings and almost all measurements , for the launchers i have only a few drawings and the weapons manual from some fighter aircrafts

 

for the LAU-3 i have 2 measurements one with 6,4 feet and one with 7,3 feet i took the metric measurements from the first drawing

-

C2302U02.jpg

Image2.jpg

 

 

 

 


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#4 ravenclaw_007

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Posted 06 August 2015 - 03:23:26 PM

i found this picture of a LAU-3A loaded with WDU-4/A and M151 and this is how it looks on my LAU-3 model

LAU-3.png

Image9.jpg

 

it looks like that my LAU-3 model is ok , i loaded the rocket fully to the end of the launcher , i dont know how far this rockets reach in to the launcher on the real thing

 

what brings me back to the question above , are this long warheads only for use on ARMY  M - launchers ???  they dont have any cover 


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#5 KJakker

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Posted 06 August 2015 - 05:31:02 PM

I ran the numbers listed above using the measurements from the upper and lower diagrams. Is it possible that the lower one is showing an alternate front fairing, one that is about 731mm long for longer rockets, in contrast to the standard 521mm fairing? If you looking at the images the lower illustration also shows a more gradual curve ending in a point which differs from the hemispherical shape of the shorter cover and might allow for the extended length to be fully covered.

 

It is just an idea, I did a little looking around but have yet to find anything to support it.    


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#6 ravenclaw_007

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Posted 06 August 2015 - 10:30:21 PM

the drawing with the more pointed front fairing is from the F-4F weapons delivery manual , i think it is more for low drag purpose as for more length

 

i think i make two versions of this Rocket pods one with cover and without this long warhead rockets and one version without cover but with long warhead rockets until we know for sure that this long warhead rockets not only for the army's M-pods


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#7 yakarov79

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Posted 06 August 2015 - 10:56:27 PM

army model M261 - 168.15 cm lenght, diameter- 40.32 cm

LAU-61 - (dpends on model)  G/A - 194,4cm  lenght, some are 167.94 cm I think C/A model and D/A. diameter 41,32cm.

l thermocoated models are larger in diameter by around 1cm.

 

As for 7 tube rocket launcher , M260 - 168.15cm  same as 19 shooter, while LAU-68 some are same as 61 but there you can find extended version like F/A - 180.6cm.

LAU-131/A -  152cm.

 

That photo above with A-1, are we 100% sure this is LAU-3 ?


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#8 ravenclaw_007

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Posted 06 August 2015 - 11:04:28 PM

yap it is a LAU-3A


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#9 ravenclaw_007

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Posted 07 August 2015 - 02:33:10 AM

i just found this picture , it is the first picture i have shown the M151 and the long M229 warhead together with Mk40 rocket motors and guess where i found it  , 189th Assault Helicopter Company , Avenger Photo Page

dave6a.jpg

 

i´m more and more convinced that this large warheads are for use on helicopters by Army , Air force and Navy


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#10 Spectre8750

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Posted 08 August 2015 - 08:42:28 PM

What about the LAU-5003 (CRV-7)?

 

LAU-5003/A 19 Round 70mm (2.75 in) Rocket Launcher; manufactured by Bristol Aerospace; used in CRV7 rocket system

Model: Mestic Munitions LAU 5003A Rocket Launcher
Type: Air-to-surface rocket launcher
Scale: Speeder
Ammo: 19 CRV7 rockets
Cost: 5,045 meters
Fire Rate: 2
Fire Control: 1D
Range: 1-2/2.9/6.4 km
Blast Radius: 5 meters
Damage: 4D

The LAU 5003A rocket launcher fires up to 19 air-to-ground missiles
effective against light armor, vehicles and other soft targets.

 

LAU-5003_zpsdkja5i5z.jpg

 

Has a cover on the Front when Loaded.


Edited by Spectre8750, 08 August 2015 - 08:58:10 PM.

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#11 ravenclaw_007

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Posted 09 August 2015 - 02:55:33 AM

i made that one already but i could make a new model with a bit more details

 

 

 

but i have an other problem , i dont get the YellowWilliePeteGroundExplosion to work ( the tga is working ) 

as soon as i add this effect to a rocket the rocket shows no explosions or any smoke effects

Attached File  YellowWilliePeteGroundExplosion.7z   1.26KB   69 downloads

if sombody could help me on that one that would be great


Edited by ravenclaw_007, 09 August 2015 - 03:00:03 AM.

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#12 Spectre8750

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Posted 09 August 2015 - 11:43:56 AM

Check out the MK40_HYDRA_MK67MOD3 from McGunny Weapons Pack 2

 

[WeaponData001]
TypeName=Mk40_Hydra_Mk67mod3
FullName=2.75" Mk 40 Rocket (Yellow Smoke) w/Mk67 MOD 3
ModelName=Mk40_Hydra_lores
Mass=10.660000
Diameter=0.070000
Length=1.440000
SubsonicDragCoeff=0.120000
SupersonicDragCoeff=0.222000
AttachmentType=
SpecificStationCode=
NationName=
StartYear=0
EndYear=0
Availability=0
BaseQuantity=0
Exported=FALSE
ExportStartYear=0
ExportEndYear=0
ExportAvailability=0
WeaponDataType=1
RailLaunched=FALSE
RocketPod=TRUE
Retarded=FALSE
FinStabilized=TRUE
SpinStabilized=TRUE
HasGrowl=FALSE
EffectClassName=WPYellowRocketEffects
ReleaseDelay=0.000000
WarheadType=0
Explosives=0.000000
FusingDistance=0.000000
ClusterBomblets=0
ClusterDispersion=0.000000
GuidanceType=0
Accuracy=70
MaxTurnRate=0.000000
MaxLaunchG=2.500000
LockonChance=0
LaunchReliability=70
ArmingTime=2.000000
SeekerFOV=0.000000
SeekerGimbleLimit=0.000000
SeekerTrackRate=0.000000
SeekerRange=0.000000
CLmax=14.000000
MinFreq=0.000000
MaxFreq=0.000000
MinLaunchRange=0.000000
MaxLaunchRange=0.000000
Duration=60.000000
CounterCountermeasure=20.000000
NoiseRejection=20.000000
CapabilityFlags=0x00000000
LoftAngle=0.000000
DescentAngle=0.000000
MaxLoftAltitude=0.000000
BoosterStart=0.000000
BoosterDuration=1.700000
BoosterAccel=122.449997
BoosterEffectName=RocketFireEffect
BoosterSoundName=Rocket
BoosterNodeName=
BoosterPosition=0.000000,-0.730000,0.000000
SustainerDuration=0.000000
SustainerAccel=0.000000
SustainerEffectName=
SustainerSoundName=
SustainerPosition=0.000000,-0.730000,0.000000
InFlightEffectName=RocketInFlightEffect
InFlightSoundName=
ReleaseAnimationID=1
ReleaseAnimationTime=0.500000
ReleaseAnimationDelay=0.000000
EODisplayFlags=0
CEP=0.000000

[WpYellowRocketEffects]
GroundHitEffectName=YellowWilliePeteGroundExplosion
GroundHitSoundName=SmallExplosion.wav
WaterHitEffectName=MediumRocketWaterHitEffect
WaterHitSoundName=
ObjectHitEffectName=YellowWilliePeteGroundExplosion
ObjectHitSoundName=SmallExplosion.wav
ArmorHitEffectName=YellowWilliePeteGroundExplosion
ArmorHitSoundName=SmallExplosion.wav
CraterModelName=
CraterType=1

 

Unless you already have.

I think the "WPYellowRocketEffects" is a stock effect.


Edited by Spectre8750, 09 August 2015 - 12:46:35 PM.

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#13 ravenclaw_007

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Posted 09 August 2015 - 01:38:06 PM

Thank you very much , it was my mistake i forgot to add the Effects entry on the bottom , now everything works

 

 

do you have by any changes the [SmokeMarkerEffects) ???  it is listed in the M274 ini but it does not work and i can not find this effect in my effects folder


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#14 Spectre8750

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Posted 09 August 2015 - 04:46:39 PM

I will find it if it exists.


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#15 CrazyhorseB34

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Posted 09 August 2015 - 05:10:16 PM

I have seen a bunch of pics from Nam with are choppers with the longer warhead sticking way far out the tube.

 

In fact I think that might be mentioned in the text of the Osprey Cobra Units in Vietnam book.

 

I think on an M-159 they should stick out quite a bit.


Edited by CrazyhorseB34, 09 August 2015 - 05:17:54 PM.

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#16 KJakker

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Posted 09 August 2015 - 05:13:54 PM

Here are the Smoke Marker effects I have.

 

Attached File  Smoke Marker Effects.7z   3.74KB   63 downloads


Edited by KJakker, 09 August 2015 - 05:58:03 PM.

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#17 Spectre8750

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Posted 09 August 2015 - 05:16:46 PM

It's in the MISSILEOBJECT.INI from the Original Ordinance Pack. the Original in the ObjectData001 doesn't have the Effect.

 

http://combatace.com...-ordnance-shop/

 

Attached File  MISSILEOBJECT.7z   1.53KB   74 downloads


Edited by Spectre8750, 09 August 2015 - 05:24:03 PM.

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#18 CrazyhorseB34

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Posted 09 August 2015 - 05:17:35 PM

Found this:

 

Except for the specialized installations in early high-speed interceptors, the MK 4/40 rockets were almost exclusively employed from multi-tube launch pods. A wide variety of these pods were used, and the most important were:

  • LAU-3/A: 19-tube launcher
  • LAU-32/A: 7-tube launcher
  • LAU-59/A: 7-tube launcher
  • LAU-60/A: 19-tube launcher
  • LAU-61/A: 19-tube launcher
  • LAU-68/A: 7-tube launcher
  • LAU-69/A: 19-tube launcher
  • M158: 7-tube launcher; M158A1 was identical to LAU-68/A
  • M159: 19-tube launcher; M159A1 was identical to LAU-61/A
  • M200: 19-tube launcher; M200A1 was identical to LAU-69/A

The LAU-series was generally used by the fixed-wing aircraft of the Air Force and Navy, while the M-series launchers were used by the Army's helicopters. Most (possibly all) of these pods could be used with either the MK 4 or the MK 40 rockets.

 
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#19 CrazyhorseB34

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Posted 09 August 2015 - 05:46:42 PM

Pic of 17 lbs. rockets in an Army 19 shot pod.

 

beerwagon.jpg

 

 


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#20 ravenclaw_007

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Posted 10 August 2015 - 08:04:25 AM

Thanks it is working now

 

do we need this variation of pods LAU-3A , LAU-3C , LAU-3D  there is no real difference between them ??? or would the list below enough ???

 

i have now the

- LAU-3A_____________ replacment for the TW launcher

- LAU-3_MK40_xxx_____without nose and tail fairing

- LAU-3A_MK40_xxx____with nose and tail fairing

- LAU-3_xxx_Twin______twin launcher without nose and tail fairing

- LAU-3A_xxx_Twin_____twin launcher with nose and tail fairing

 

-

Image6.jpg

Image12.jpg

Image8.jpg

Image16.jpg

Image14.jpg

 

 

 


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