Difference between revisions of "HUD"

Revision as of 18:45, 8 November 2021

Overview

The Head-Up Display or HUD is a transparent display (typically located in front of the aircraft's windscreen) used to present information to the pilot without them having to look at their instruments. The design, layout, and functionality of different HUDs varies significantly. Most HUDs have multiple modes, these can be switched between by pressing the "Switch sight mode in cockpit" keybind. This article will provide an overview of each HUD design in the game. Some HUD designs are used by multiple aircraft.

HUD controls

To activate CCRP mode on HUDs you need to have placed your target point before pressing the "Switch sight mode in cockpit" key.

There are only two controls which affect the HUD, these are shown below.

Head-Up Display Controls
Control name	Default Keybind (PC keyboard & mouse)	Description
Toggle Cockpit Sight	`'`	Turns the gunsight reticle (in this case the entire HUD) on / off.
Switch sight mode in cockpit	Unbound	Switches the HUD mode (typically between the standard mode and various ground attack modes)

List of aircraft with HUDs

410SUM1

The 410SUM1 is a HUD design used on the Harrier and Jaguar family of aircraft in game. The HUD has five modes:

Standard
Cannon on ground target
Rockets
Bombs
Bombs (auto)

Standard Symbology

The standard 410SUM1 HUD symbology.

The standard HUD symbology is shown when the HUD is in "standard" mode. The standard symbology can be seen in the image to the right; a summary of the symbology can be seen below.

Symbology	Explanation
Aircraft symbol	The aircraft symbol shows where the aircraft's nose is pointing and the "wings" on the side always remain parallel to the aircraft's wings.
Horizon bar	The horizon bar remains parallel with the horizon and represents level flight when the aircraft symbol is aligned with it. The Horizon bar consists of two solid horizontal lines on either side of the HUD, with a gap between them.
Elevation bar	The elevation bars remain parallel with the horizon and show the elevation of the aircraft in increments of 30°. The positive elevation bars are made up of 4 dashes either side of the gap, while the negative elevation bars consist of two dashes.
True Air Speed	The True Air Speed readout shows the True Air Speed (TAS) of the aircraft in knots).
Radar altitude	The Radar Altitude readout shows the radar altitude (altitude over terrain) of the aircraft in feet. The maximum altitude which can be displayed is 5,000 ft, at higher altitudes this readout is removed.
Angle of Attack	The Angle of Attack readout shows the Angle of Attack (AoA) of the aircraft, indicated by the position of the arrow. The solid line represents 0°. From lowest to highest the three dots above the line represent 8°, 12°, and 16°respectively; the dot below the line represents -5°.
Vertical speed	The vertical speed readout shows the vertical speed of the aircraft in feet per minute (fpm), indicated by the position of the arrow. The solid line represents 0 fpm (no change in altitude). Each dot represents 500 fpm, giving the readout a range from +1,000 fpm to -2,000 fpm.
Heading	The heading readout shows the compass heading of the aircraft. Only the first two digits of the heading numbers are given (i.e. 32 means a heading of 320 degrees).
Sideslip indicator	The sideslip indicator shows the sideslip of the aircraft. The vertical line represents no sideslip, the circle moves either side of the line to show sideslip occurring. This is meany useful for VTOL aircraft.
Gyro Gunsight	The gyro gunsight functions like a regular gyro gunsight.

CCIP Symbology

In this mode the FRL cross is currently offset 6° upwards (i.e. if the cross is level with the horizon line, then the aircraft is pointed 6° nose down.

The CCIP 410SUM1 HUD symbology.

The CCIP symbology is shown when the HUD is in either "cannon on ground target", "rockets", or "bombs" mode. The symbology in this mode is largely the same as the standard symbology, but with a few notable changes. The gyro gunsight is replaced by a computed impact point and the aircraft symbol by a Fuselage Reference line (FRL) cross. As noted above the FRL cross is offset upwards. The CCIP symbology can be seen in the image to the right; a summary of the symbology can be seen below.

Symbology	Explanation
FRL cross	The FRL cross is used like the aircraft symbol in standard mode, but is offset 6 degrees upwards.
Horizon bar	Same as standard mode.
Elevation bar	Same as standard mode.
True Air Speed	Same as standard mode.
Radar altitude	Same as standard mode.
Angle of Attack	Same as standard mode.
Vertical speed	Same as standard mode.
Heading	Same as standard mode.
Sideslip indicator	Same as standard mode.
Computed impact point	The computed impact point marker spot shows the computed impact point of the cannon, bombs, or rockets (depending on which mode the HUD is in).

CCRP Symbology

The CCRP 410SUM1 HUD symbology. Note: To use CCRP you should place the aircraft symbol over the bombing line, the angle in this image is only to make HUD symbology clearer.

The CCRP symbology is shown when the HUD is in "bombs (auto)" mode. The basic symbology is largely unchanged from the standard symbology, however quite a bit of addition CCRP symbology is added. The CCRP symbology can be seen in the image to the right; a summary of the symbology can be seen below.

Symbology	Explanation
Aircraft symbol	Same as standard mode.
Horizon bar	Same as standard mode.
Elevation bar	Same as standard mode.
True Air Speed	Same as standard mode.
Radar altitude	Same as standard mode.
Angle of Attack	Same as standard mode.
Vertical speed	Same as standard mode.
Heading	Same as standard mode.
Sideslip indicator	Same as standard mode.
Bombing line	The bombing line is a vertical line placed such that it intersects the chosen CCRP target.
CCRP Target	The CCRP Target marker is a horizontal line placed on the bombing line such that it marks the location of the chosen CCRP target.
Time circle	The time circle appears when you are flying towards the CCRP target. It starts as an almost complete circle and decreases anti-clockwise as you approach.
Break X	When the aircraft is at risk of hitting the ground or within the blast radius of the bombs it is going to drop an X appears in the middle of the time circle to warn the pilot to pull up.

To use CCRP you should place your target point (see Ballistic Computer for details) then switch the HUD into "bombs (auto)" mode. You will see the time circle appear on the HUD (if you are flying towards the target), along with the bombing line and CCRP target marker placed on the chosen target. You should manoeuvre the aircraft such that the centre of the aircraft symbol is horizontally aligned with the bombing line (meaning you are flying directly towards the target). As you approach the target the time circle will begin to decrease, this is generally a good time to begin holing the bomb release button. Once the range circle completely disappears the bombs will release, hitting the marked target. If you are flying too low then the break X will appear in the middle of the time circle warning you that you need to pull up.

Missile Symbology

The additional symbology added to the 410SUM1 HUD when an air-to-air missile is active.

Whenever an air-to-air missile is activated (regardless of HUD mode) additional symbology is added to the HUD. The missile symbology can be seen in the image to the right; a summary of the symbology can be seen below.

Symbology	Explanation
Static missile cross	When an air-to-air missile is activated this cross appears in the centre of the HUD. While the missile is in the process of activating the symbol flashes, it stops flashing when the missile is ready.
Horizon bar	When an air-to-air missile is activated this cross appears and rotates around the static missile cross. While the missile is in the process of activating the symbol flashes, it stops flashing when the missile is ready. When the missile has acquired a target this cross disappears (it will re-appear if the target lock is lost).