LV-909 "Terrier" Liquid Fuel Engine
| LV-909 "Terrier" Liquid Fuel Engine | ||
 | ||
| Liquid fuel engine by Jebediah Kerman's Junkyard and Spacecraft Parts Co | ||
| Radial size | Small | |
| Cost | (total) | 390.00 
|
| Mass | (total) | 0.500 t |
| Drag | 0.2 | |
| Max. Temp. | 2000 K | |
| Impact Tolerance | 7 m/s | |
| Research |  Advanced Rocketry
| |
| Unlock cost | 1 600
| |
| Since version | 0.14 | |
| Part configuration | liquidEngineLV-909_v2.cfg | |
| Maximum thrust | (1 atm) | 14.78 kN |
| (vacuum) | 60.00 kN | |
| Isp | (1 atm) | 85 s |
| (vacuum) | 345 s | |
| Fuel consumption | 3.55  /s
| |
| Thrust vectoring | 4 ° | |
| Testing Environments | ||
| On the surface | Yes | |
| In the ocean | Yes | |
| On the launchpad | Yes | |
| In the atmosphere | Yes | |
| Sub-orbital | Yes | |
| In an orbit | Yes | |
| On an escape | Yes | |
| Docked | No | |
| Test by staging | Yes | |
| Manually testable | Yes | |
| Packed volume | 1300 l | |
The LV-909 "Terrier" Liquid Fuel Engine is a size 1 liquid fuel engine.
Contents
Product description
| “ | The 909 model was initially received with some skepticism by spacecraft engineers, as it defied the long-standing convention that "More Power!" is always better. Despite this, the 909 series has found its place in the spacecraft construction world, being particularly useful as a final stage and landing engine. — Jebediah Kerman's Junkyard and Spacecraft Parts Co |
” |
Usage
The Terrier is the first vacuum engine unlocked in the tech tree in Career mode.
The Terrier has thrust vector control, allowing efficient control of the rocket when it is most needed: during ascent, descent, and orbit correction burns. It has a slightly better specific impulse in vacuum than the LV-T30 "Reliant" Liquid Fuel Engine and LV-T45 "Swivel" Liquid Fuel Engine and is much smaller and lighter than them, but it has dramatically less thrust. The low thrust makes the Terrier unsuitable as a main engine on most lower stages, but the low mass allows for more efficient upper stages. Furthermore, the Terrier is short enough that LT-1 Landing Struts can extend past it. Because of this, the Terrier is a good choice for lander engines.
Like the Swivel and Reliant, the Terrier cannot be radially mounted.
The thrust vectoring on this engine tends to be less useful than on the Swivel, due to the Terrier's reduced gimbal range and the fact that it is often used on lighter rockets, which can be turned easily by the SAS torque provided by the command pod or probe body.
Be aware that unlike the Swivel and Reliant, the LV-909 does not have an alternator, meaning it cannot produce electric charge. Another source of power (even if just batteries) is therefore strongly recommended for any spacecraft that uses it.
Prior to version 1.6, the LV-909 was one of the few parts in Kerbal Space Program covered in multi-layer insulation.
Variants
As of version 1.6 this engine has three models that can be switched in the editor.
Changes
- New model and texture
- Added 3 variants
- New, higher quality model applied.
- Max thrust increased from 20 to 50; vacuum ISP reduced from 400 to 390.
- Initial Release
