Block 5 new features:
1.Fully upgraded high angle-of-attack performance activated by AG1. Short runway takeoff performance improved greatly.
2. CLOS mode targeting bug fixed.
3.Autopilot and auto-aimming system upgraded.

General instructions:
AG1: HIGH ANGLE OF ATTACK MODE AND Short runway FCS takeoff mode. Do not forget to open flap when AG1 is on.

AG2: Activate AGCAS Automatic ground collision avoidance system.

AG3: CLOS MODE, all the Weapon Command to line of sight of the cockpit, including guided rocket and minigun.
You should use CLOS mode in cockpit sight mode.
VTOL is for setting target altitude for AIM-7R CLOS mode, so it would not work for flap while AG3, do not AG3 while takeoff or landing.
AIM-7R CLOS mode instruction:
Using VTOL to adjust the altitude of target first before launch, then activate group 5 and launch the selected rocket, use the helmet-steered sight to look at the target at the same time and keep for about 1 second in normal speed. The Launched AIM-7R rocket will directly move towards any untagged target you selected seconds ago. It is especially useful for any ground target in any place, and even useful for untagged target.

AG4: FOTD fiber optic trailing decoy System, Open guide head electronic false target, do not activate that on the ground, or you will destroy the plane.

AG5: Open rocket bay to activate air-to-air rockets. The upgraded AIM-7R is an unjammable air-to-air rocket. Each countermeasure is useless when faced with upgraded AIM-7R. Even when the enemy continuously releasing the countermeasures, you could still launch upgraded Aim-7R at the gap of the countermeasure release.
However, you should continuously switch on the selected rocket before it hit the target. For example, after you launch AIM-7RSparrow1, you should keep selecting AIM-7RSparrow1 before the rocket hit the target. You could only guide the rocket to one target at the same time.

AG6: Autopilot helps to aim at the target. With autothrottle when throttle from 30 percent to 70 percent.
When AG1 OR AG3 AT AG6 MODE, THE PLANE WOULD FLY LEVEL AND STRAIGHT by autopilot, the autopilot could automatically aim at the target only when AG1 AND AG3 are off.
AG7: Anti-sidewind half-automatic landing mode, you need to target at the runway by yourself and do some trimming. The correct landing speed is 400-450kmph. The correct altitude is 100m per 1.1km from the airport. Do not activate AG1 or AG2 or AG4 or AG5 or AG6 when AG7 is on. You must land in this mode, or It is too dangerous. Automatically release drag parachute while touch-down.

AG8: Activate 360-degree retractable 7.62mm minigun system. more than 12000 rounds per minute each side.
Tips:
So large trimming force that you could even sustainably turn the plane only by trimming the plane at mach 0.9. Superiority sustainable turning at M0.9 FOR 15deg per second. Very outstanding roll performance. Enabling to defend AIM9 or AIM120 air-to-air rocket in reality. Enemy would be hit within 2 kilometers away from the aircraft.
Afterburner on after 63 percentage throttle.

Main armament: AIM-7R

EOTAS 360-DEGREE LOCK ABILITY

Takeoff
Flaps: 50%
Pitch up: 350km/h

Landing
Flaps: 100%
Trottle: 5%
Speed: 400-450km/h
Touchedown speed: 360-450km/h
Remember to AG7 before landing for drag parachute

Block 4 CLOS mode rocket guidance bug fixure:
Change 5 variables in variable setters:
XO=
(XT*cos(RollAngle)-ZT*sin(RollAngle))*cos(Heading)+(YT*cos(PitchAngle)-(ZT*cos(RollAngle)+XT*sin(RollAngle))*
sin(PitchAngle))*sin(Heading)

YO=
(YT*cos(PitchAngle)-(ZT*cos(RollAngle)+
XT*sin(RollAngle))*sin(PitchAngle))*cos(Heading)-(XT*cos(RollAngle)-
ZT*sin(RollAngle))*sin(Heading)

ZO=
((ZT*cos(RollAngle)+
XT*sin(RollAngle))*cos(PitchAngle)+YT*sin(PitchAngle))

TGTPOSX=
smooth(TDisL*cos(CH)+Latitude,(LAU>20?0:10000))

TGTPOSY=
smooth(TDisL*sin(CH)+Longitude,(LAU>20?0:10000))

After that change, all rockets in CLOS mode to every direction would aim at the correct position.

Enjoy the tremendous air-to-surface capability!

F-104 stealth starfighter primer plus block 4 major upgrades:

1.Brand New CLOS mode operated in cockpit Activated by AG3.
It enables the minigun and AIM7R guided rocket to aim and fire at the direction of pilot sight directly using helmet-steered aiming system.

AIM7R CLOS mode is especially useful for attacking untagged ground target from very far away from the plane.
The target altitude is measured in meter.
Pilot should adjust the target altitude manually by adjusting VTOL tab before launching the AIM7R guided rocket, then turn the camera towards the target and force launch a selected rocket, keep the camera turning at the target for 1 second at normal speed, then the AIM7R guided rocket in CLOS mode would fly towards the selected target automatically.
Autopilot of AG6 in CLOS mode is specifically modified for stability to help aiming at the target manually in CLOS mode.
CLOS MODE, all the Weapon Command to line of sight of the cockpit, including guided rocket and minigun.
You should use CLOS mode in cockpit sight mode.
VTOL is for setting target altitude for AIM-7R CLOS mode, so it would not work for flap while AG3, do not AG3 while takeoff or landing.
AIM-7R CLOS mode instruction:
The target altitude is measured in meter. Using VTOL to adjust the altitude of target first before launch, then activate group 5 and launch the selected rocket, use the helmet-steered sight to look at the target at the same time and keep for about 1 second in normal speed. The Launched AIM-7R rocket will directly move towards any untagged target you selected seconds ago. It is especially useful for any ground target in any place, and even useful for untagged target.

2.Totally upgraded cockpit, with much more user-friendly screen and gauge sets and advanced helmet-steered aiming system.

Block 3 new features:
1.Both air-to-ground and air-to-air Multipurpose capability: New AIM-7R guided rocket have added air-to-ground capability, and its air-to-ground capability is also unjammable.
2. Better landing operation feeling due to automatically released drag parachute by AG7, it would automatically release as soon as the plane touches the ground. Automatic drag parachute could add the safety of landing.
So it would say goodbye to the nickname Widowmaker with the help of digital flight control system.
3. Automatic enemy search by Left-side and right-side EOTAS. It turns and searches when no target have been selected, however it would automatically aim at a target when one object is found.

Block 2 new features:
1.Unjammable aerodynamic-controlled guided rocket. The upgraded AIM-7R is an unjammable air-to-air rocket. Each countermeasure is useless when faced with upgraded AIM-7R. Even when the enemy continuously releasing the countermeasures, you could still launch upgraded Aim-7R at the gap of the countermeasure release.
However, you should continuously switch on the selected rocket before it hit the target. For example, after you launch AIM-7RSparrow1, you should keep selecting AIM-7RSparrow1 before the rocket hit the target. You could only guide the rocket to one target at the same time.

For the guided rocket, refer to:
https://www.simpleplanes.com/a/898i4s/AIM-7R-unjammable-guided-rocket-block-4

2.FOTD Fiber Optic Trailing Decoy have been employed and could be used by activate group4. It would easily mislead the rocket of enemy. Open guide head electronic false target, do not activate that on the ground, or you will destroy the plane.

F104 Stealth project aims at an extremely cheap very light stealth multipurpose aircraft for poor countries, or in less materials, cheaper price and mass production for larger countries. Equipped with a single RM8 ENGINE with thrust 112kN or a single F100 or F110 engine, It might become the lightest stealth fighter in the world, which might be very ideal for small countries to protect themselves without expensive heavy fighters. With the help of rearranged locations of wings and canards, plus new digital flight control systems, this plane is much safer and easier to control than original F104 nicknamed Widowmaker. Two stealth rocket pods are at the end s of the primary wings.
Speed M0.9 at sea level for sustained flight, speed M1.2 in diving at sea level is pretty safe.
M1.8 at 12000m, the same speed as SAAB 37.
Roll rate more than 360 degrees per second at 600kmph.

Its advantages in combat is mainly on very fast acceleration, very high climb rate, as well as high sustained turning about 16 degrees per second at 900kmph. Thanks to its high wing loading, the plane is extremely strong while diving and could reach and maintain a very terrifying speed.

However, when you are landing, you must change FCS flight control system control mode.

Its range is not fine, which is only about 1200km in normal fight. So please save fuel and please do not throttle to more than 63 percent throttle too often.
Its total fuel plus the wing-end pod is 4200L only, however this also is a little bit better than original F104.

For naval version of it, refer to:
https://www.simpleplanes.com/a/yb0X25/F-104PrimerPlus-aircraft-carrier-based-block-4-naval-5-generation-StealthStarfigh

For updated new version, refer to:
https://www.simpleplanes.com/a/255AGA/F-104PrimerPlus-block-5-5-StealthStarfighter-RM8-5-generation-land-based-version