Landing Gear

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**Small Landing Gear, Airplane Landing Gear**

*What does this mean?*

## Suspension

### Damper

0 ~ 250%

*Not to be confused with Landing Leg*
A **Landing Gear** is used on the underside of planes to allow horizontal take off and landing.  They can retract and extend, and can brake and have motor torque.

## Tradeoffs

The advantages of the Landing Gear are simplicity and customizability. They can be close to a real life landing gear, so the player does not have to use rover wheels to create landing gears. The main disadvantage is wheel limitations. The landing gear cannot have trucks, which means rover wheels and other parts are still required to create gear trucks.

## Properties

A Landing Gear has multiple properties, many which are wide-range sliders. They are **Bay Length, Turning Angle, Gear Ratio, Torque, Retraction Speed, Gear Length, Height Offset, Forward Offset, Side Offset, Slant Angle, Vertical Offset Angle, Support Arm, Brake Torque, Forwards Traction, Sideways Traction, Suspension Travel, Suspension Strength, Suspension Damper, Sound Volume, Wheel, Bay, and Door, as well as Turn Input and Motor Input.**

### General Settings

The **Bay Length** slider determines the length of the gear bay. It is only available is **Bay** is not set to None.

The **Turning Angle** slider determines the degree in which the wheel can rotate, in either direction. It ranges from 0 ~ 45 degrees. Setting it to 0 removes the **Turn Input** box.

The **Gear Ratio** slider indicates a multiplication of torque and a division of max speed. The number selected indicates what torque is multiplied by and what max speed is divided by. The value ranges from 0.5 ~ 3. Torque must not be zero for this slider to appear.

The **Torque** slider determines the force of the wheel turning, and is affected by **Size** and **Gear Ratio**. If set to 0, then the Gear Ratio slider will not appear.

The **Retraction Speed** slider controls how fast the gear retracts, from 10% to 200%. At 100% retract speed, the gear takes about 4 seconds to retract, which means the slider determines a retract speed of 2 ~ 40 seconds.

### Gear Leg Settings

The Gear Leg settings determine the dimensions of the landing gear **leg**, or the part that connects the wheels to the bay.

The **Gear Length** slider determines the length of the leg. The **Height Offset** slider lifts the leg, the **Forward Offset** slider shifts the wheels forward or backward, and the **Side Offset** slider shifts the wheels left or right. These settings work by percentage.

The **Slant Angle** slider demands the degree offset of which the leg and supports are anchored to the wheel, but does not appear if **Wheel** is set to Double. The **Vertical Offset** slider adjusts the anchoring angle of the attaching arm of the wheels. These sliders operate by degrees.

The **Upper Braces** and **Support Arm** toggles are for cosmetic purposes and has no change to mass or cost.

### Wheel Settings

Wheel Settings adjust characteristics of the landing gear wheels.

The **Brake Torque** slider controls the strength of the brakes, and can be disabled.

The **Forward Traction** and **Sideways Traction** sliders define the traction of the wheels when going forward and sideways, respectively. They range from 50 ~ 250%.

The **Suspension Travel** slider determines the maximum compression of the leg suspension, which can lengthen the leg. In non-zero **Vertical Offset** settings, it can change the dimension of the leg by bending it.

The **Suspension Strength** and **Suspension Damper** sliders determine the general tension (compression resistance) and damper (bounce resistance), respectively. This is very similar to the Shock.

The **Sound Volume** slider determines the sound made when extending or retracting the gear, from 0 ~ 100%.

### Part Style

All part styles are selectors, which mean that clicking on arrows moves the selector until cycling.

The **Wheel** selector determines the style of the wheel.

* Single: One wheel which is connected to an anchor on one side
* Double: Two wheels next to each other, with a connection between them. This setting removes the **Slant Angle** slider.
* Straddled: One wheel with an anchor to both sides

The **Bay** selector determines the style of the bay.

* None: No bay. This setting removes the **Bay Length** slider.
* Straight: A box-like bay is present
* Curved: The bay is curved inwards.

The **Door** selector determines the style of the landing gear bay doors.

* None: No doors are present
* Vertical: Two doors closing inwards along the part's x-axis.
* Horizontal: Two doors closing inwards along the part's y-axis.
* Side: Single door closing inwards along the part's x-axis.

## Performance

There are many performance stats similar to the Wheels, consisting of **Top Speed, Max RPM, Power Consumption, Concrete Friction, and Offroad Friction.**

The **Top Speed** stat indicates the maximum velocity the wheels can spin at, consistent with the **Max RPM** indicator, which indicates the maximum RPM the wheel can spin at.

The **Power Consumption** stat indicates how much power the wheel uses (if equipped with motors) at 100% throttle and power.

The **Concrete Friction** stat indicates how much friction the wheel produces on pavement and structures. The **Offroad Friction** stat indicates the friction produced anywhere else. These stats can be used to determine traction, but are not affected by any Traction sliders. For landing gears, both values are at 100%.

## Examples

There are two parts that are customized for small or large landing gears.

### Small Landing Gear

The Small Landing Gear has no bay, has a smaller overall, and is thus configured for smaller aircraft.

### Airplane Landing Gear

The Airplane Landing Gear has a bay and larger overall, being configured for larger aircraft.