Difference between revisions of "LT-2 Landing Strut"
(→Tuning: tuning only with advanced tweakables) |
|||
| (43 intermediate revisions by 26 users not shown) | |||
| Line 1: | Line 1: | ||
| − | {{ | + | {{:LT-2 Landing Strut/Box}} |
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | }} | ||
| − | The | + | [[File:LandingStrutDeployable.png|thumb|left|LT-2 Landing Strut extended (left) and folded (right)]] |
| + | |||
| + | The '''LT-2 Landing Strut''' is primarily used to land safely on celestial bodies. Prior to its introduction in 0.14, winglets were often the preferred method of providing landing legs for [[Mün]] missions. | ||
== Usage == | == Usage == | ||
| − | ? | + | The LT-2 Landing Strut is used as a support when landing vertically, or at least attempting to. It is connected radially and extends with the {{Key press|G}} key (default). It extends much farther than its smaller cousin the [[LT-1 Landing Strut|LT-1]] through a unique telescoping action, making it suitable for landers with larger engines. |
| + | |||
| + | Although comparatively long, LT-2 landing struts still need to be placed low on a rocket. They extend far enough to be used with the [[Rockomax "Poodle" Liquid Engine|Poodle]], [[LV-T30 Liquid Fuel Engine|LV-T30]], and [[LV-T45 Liquid Fuel Engine]]s, but cannot reach past the [[LV-N Atomic Rocket Motor|LV-N]] or [[Rockomax "Mainsail" Liquid Engine|Mainsail]]. A workaround to this is using [[Parts#Adapters.2C_Couplers_.26_Struts|girders, I-beams, or panels]] or just simply using the offset tool to place the landing leg lower on the rocket. You can check if it will clear the engine by moving your lander in the VAB so that its landing legs just touch the ground. Do be aware, though, that all landing legs have suspension and will get slightly shorter under heavier rockets. | ||
| + | |||
| + | LT-2 Landing struts can be set to be either extended or retracted at launch. This is done by right-clicking the part in the [[VAB]] or [[SPH]] and clicking the relevant button. The landing struts can be toggled in flight with the {{Key press|G}} key or hitting the “extend gear” button on the HUD. While in motion the legs can produce substantial forces, potentially resulting in a several meter “hop”. If the leg collides with another part of the rocket, it can break connections and push that part away.<!--- [[http://kerbalspaceprogram.com/forum/index.php?topic=11407.0]]--> | ||
| + | |||
| + | The maximum safe landing speed for an LT-2 landing strut is ~12 m/s. Landings with massive rockets or on rough terrain may need to be slower to avoid ripping off landing legs. | ||
| + | |||
| + | Each LT-2 leg can support 50 tons in Kerbin's gravity when sitting still. Each leg can absorb a gentle landing impact for an 11 ton load. | ||
| + | |||
| + | In the current version, it is possible to lock the suspension. | ||
| + | |||
| + | ==Tuning== | ||
| + | With the ''advanced tweakables'' enabled, there are two settings for the landing leg: spring and damper. It depends on the gravity of the landing site, but also on the mass of the ship. | ||
| + | * Having a spring setting that's too low has the risk of reaching the "end of travel" (i.e. trying to compress too far) when landing, if your landing's not gentle enough. It can also mean that your ship may wobble around when on the ground and thus lean over, as the spring cannot support the ship's weight. | ||
| + | * Having a damper setting that's too low means that things bounce and oscillate. | ||
| + | |||
| + | In general, to prevent a ship bouncing around, set the damper higher than springs, maybe even crank up damper strength. | ||
| − | == | + | == Product description == |
| − | + | {{Quote | |
| + | |The LT-2 Landing Strut offers a heavy-duty method for planting yourself firmly on the ground, without the severe consequences that usually accompany planting yourself firmly on the ground. | ||
| + | |Moving Parts Experts Group}} | ||
== Changes == | == Changes == | ||
| − | + | ;[[1.2]] | |
| + | * Moved from Utility to Ground | ||
| + | * Added deployment sounds | ||
| + | ;[[0.22]] | ||
| + | * Suspension | ||
| + | <!-- * (undocumented) mass reduced from 0.1 to 0.075 (checked 0.19 files and these state 0.1 Mg mass!) --> | ||
| + | ;[[0.14]] | ||
| + | * Initial release | ||
{{Parts}} | {{Parts}} | ||
| + | [[Category:Landing legs]] | ||
Latest revision as of 23:42, 17 November 2018
| LT-2 Landing Strut | ||
 | ||
| Landing leg by Moving Parts Experts Group | ||
| Radial size | Radial mounted | |
| Cost | (total) | 340.00 
|
| Mass | (total) | 0.100 t |
| Drag | 0.2 | |
| Max. Temp. | 2000 K | |
| Impact Tolerance | 12 m/s | |
| Research |  Advanced Landing
| |
| Unlock cost | 4 100
| |
| Since version | 0.14 | |
| Part configuration | landingLegLT-2.cfg | |
| Retractable | Yes | |
| Brake torque | No | |
| Steering range | No | |
| Packed volume | 300 l | |
The LT-2 Landing Strut is primarily used to land safely on celestial bodies. Prior to its introduction in 0.14, winglets were often the preferred method of providing landing legs for Mün missions.
Contents
Usage
The LT-2 Landing Strut is used as a support when landing vertically, or at least attempting to. It is connected radially and extends with the G key (default). It extends much farther than its smaller cousin the LT-1 through a unique telescoping action, making it suitable for landers with larger engines.
Although comparatively long, LT-2 landing struts still need to be placed low on a rocket. They extend far enough to be used with the Poodle, LV-T30, and LV-T45 Liquid Fuel Engines, but cannot reach past the LV-N or Mainsail. A workaround to this is using girders, I-beams, or panels or just simply using the offset tool to place the landing leg lower on the rocket. You can check if it will clear the engine by moving your lander in the VAB so that its landing legs just touch the ground. Do be aware, though, that all landing legs have suspension and will get slightly shorter under heavier rockets.
LT-2 Landing struts can be set to be either extended or retracted at launch. This is done by right-clicking the part in the VAB or SPH and clicking the relevant button. The landing struts can be toggled in flight with the G key or hitting the “extend gear” button on the HUD. While in motion the legs can produce substantial forces, potentially resulting in a several meter “hop”. If the leg collides with another part of the rocket, it can break connections and push that part away.
The maximum safe landing speed for an LT-2 landing strut is ~12 m/s. Landings with massive rockets or on rough terrain may need to be slower to avoid ripping off landing legs.
Each LT-2 leg can support 50 tons in Kerbin's gravity when sitting still. Each leg can absorb a gentle landing impact for an 11 ton load.
In the current version, it is possible to lock the suspension.
Tuning
With the advanced tweakables enabled, there are two settings for the landing leg: spring and damper. It depends on the gravity of the landing site, but also on the mass of the ship.
- Having a spring setting that's too low has the risk of reaching the "end of travel" (i.e. trying to compress too far) when landing, if your landing's not gentle enough. It can also mean that your ship may wobble around when on the ground and thus lean over, as the spring cannot support the ship's weight.
- Having a damper setting that's too low means that things bounce and oscillate.
In general, to prevent a ship bouncing around, set the damper higher than springs, maybe even crank up damper strength.
Product description
| “ | The LT-2 Landing Strut offers a heavy-duty method for planting yourself firmly on the ground, without the severe consequences that usually accompany planting yourself firmly on the ground. — Moving Parts Experts Group |
” |
Changes
- Moved from Utility to Ground
- Added deployment sounds
- Suspension
- Initial release
