If you want to drop Bombs here is what you do..add to your sim folder,Here is my example.
[fltsim.0]
title=Paveway
model=
texture=
ui_type="Paveway"

[General]
category=SimpleObject

[Geometry]
//Reference size (in feet) used in moment of inertia estimations.
Length = 14.2      
Width  = 0.15
Height = 2.8

[Mass Properties]
//Reference weight, in pounds
Empty Weight = 970

[contact_points]
destroy_on_impact=1

[effects]
ImpactLand  =fx_iris_a10_explosion.fx
ImpactWater = fx_watercrash.fx

\\Paveway Releaseable object copyrighted by Chris Sykes

       <Weapon>
           <Gun>Paveway</Gun>
           <Shell>Paveway</Shell>
           <Unlimited>1</Unlimited>
           <Station name="LeftWingOuter" params="3.5,0,0,0,-0.039,0,4" />
           <Mode name="AUTO" setshots="4" shotrate="8" sequence="1,2,3,4" reset="0" />
           <Mode name="1+4" setshots="2" shotrate="8" sequence="1,4" reset="0" />
           <Mode name="2+3" setshots="2" shotrate="8" sequence="2,3" reset="0" />
           <Mode name="SINGL" setshots="1" shotrate="32" sequence="1,2,3,4" reset="0" />
           <DefaultMode>AUTO</DefaultMode>
       </Weapon>

            <Gun>
           <Type>MachineGun</Type>
           <Name>Paveway</Name>
           <Desc>Paveway Bomb</Desc>
           <HudString>BOMB</HudString>
           <Pix />
           <ConeAngle>0.005</ConeAngle>
           <TargetRange>10000</TargetRange>
           <MaxGForce>3</MaxGForce>
           <Delay>0.0</Delay>
           <FxFire />
           <Sound />
           <Shell>
               <Name>Paveway</Name>
               <Desc>Paveway</Desc>
               <HudString>Paveway</HudString>
               <Pix />
               <Container>Paveway</Container>
               <FxWake />
               <Weight>540</Weight>
               <TargetWeight>5000</TargetWeight>
               <Lifetime>99.0</Lifetime>
               <CtrLifetime>99.0</CtrLifetime>
               <Efficiency>1.0</Efficiency>
               <RadiusRatio>2.0</RadiusRatio>
               <DragCoeff>0.5</DragCoeff>
               <OpArea>0.465</OpArea>
               <GravCoeff>1.0</GravCoeff>
               <InitSpeed>0</InitSpeed>
               <EngThrust>0</EngThrust>
               <ThrustDuration>0.0</ThrustDuration>
           </Shell>
       </Gun>
             
   If you are wanting to use the great B52 bomb overlay Made by Lost in Isaan,But dont use an aircraft with bomb bay doors Like the CS F-18,this will make it useble for you,open XLM with notepad and change this.   <Element>
                                            <Visible>(L:BB_Door_pos,position) 0 ==</Visible>



                  IRIS F-15E Mudhen Driver  Here is the placement of the hud 3d location and the vulcan machine gun.
       
<GaugeInfo>
       <!-- gau section -->
       <AntiAlias2d>1</AntiAlias2d>
       <!-- 2D HUD anti-aliasing. 1-yes, 0-no (1).  0 increases performance.  -->
       <AntiAlias3d>1</AntiAlias3d>
       <!-- VC HUD anti-aliasing. 1-yes, 0-no (1).  0 increases performance.  -->
       <HudFov2d>15.01</HudFov2d>
       <!-- 2d HUD field of view. Degrees -->
       <HudFov3d>17.00</HudFov3d>
       <!-- vc HUD field of view. Degrees -->
       <CollimationData>0.0,-8.983,5.064,-4.47</CollimationData>
       <!-- see SDK -->
       <EyePtDeltaRatio>0.8</EyePtDeltaRatio>
       <!-- hud acceleration sensetivity factor -->
       <Collimate>1</Collimate>
       <!-- VC HUD collimation. 1-yes, 0-no (1). -->
       <TestFrame>0</TestFrame>
       <!-- HUD test pattern. 1-yes, 0-no (0). -->
   </GaugeInfo>
       
        <Weapon>
           <Gun>M61 Vulcan</Gun>
           <Shell>Vulcan Bullet</Shell>
           <Unlimited>1</Unlimited>
           <Station name="Nose" params="1.59,0.50,0.59,0,0.00,0,1200" />
           <Mode name="AUTO" shotrate="100" setshots="0" sequence="1" skipFrm="0" />
           <Mode name="X10" shotrate="100" setshots="100" sequence="1" skipFrm="0" />
           <DefaultMode>AUTO</DefaultMode>
       </Weapon>
       
   
         <Gun>
           <Type>MachineGun</Type>
           <Name>M61 Vulcan</Name>
           <Desc>M61 Vulcan six-barreled cannon</Desc>
           <HudString>GUN</HudString>
           <Pix />
           <ConeAngle>0.0015</ConeAngle>
           <TargetRange>1500</TargetRange>
           <Delay>0.0</Delay>
           <FxFire />
           <Sound name="..\..\..\Captain_Sim\Weapon\Sound\VulcanCannon.wav" loopBeg="05.5139" loopEnd="0.0000" finishLoop="0" gain="1.0" />
           <Shell>
               <Name>Vulcan Bullet</Name>
               <Desc>20mm Vulcan Bullet</Desc>
               <HudString>M61</HudString>
               <Pix />
               <Container>CS_Weapon_M61Vulcan</Container>
               <FxWake>fx_contrail_l</FxWake>
               <Weight>0.1024</Weight>
               <TargetWeight>5000</TargetWeight>
               <Lifetime>3.0</Lifetime>
               <CtrLifetime>2.0</CtrLifetime>
               <Efficiency>0.026</Efficiency>
               <RadiusRatio>1.0</RadiusRatio>
               <DragCoeff>0.295</DragCoeff>
               <OpArea>0.0003141</OpArea>
               <GravCoeff>0.0</GravCoeff>
               <InitSpeed>1050</InitSpeed>
               <EngThrust>0</EngThrust>
               <ThrustDuration>0</ThrustDuration>
           </Shell>
       </Gun>

         [Vcockpit01]
Background_color=0,0,0
size_mm=1024,1024
visible=1
pixel_size=1024,1024
texture=$HUD

gauge00=CSWeapon!hud3d, 10, -148, 1000, 1000,//..\panel\F15E-HUD!HUD-F15E,                              182, 15, 1000, 1000,
gauge01=..\panel\F15E-SYS!F15E-SYS-HUD,                      1,1,1,1,

        [Views]
eyepoint = 18.353, 0.0, 4.494