Difference between revisions of "Mk-55 "Thud" Liquid Fuel Engine"

From Kerbal Space Program Wiki
Jump to: navigation, search
(Changes: added rename to change log)
m (Changes)
 
(46 intermediate revisions by 19 users not shown)
Line 1: Line 1:
{{Partbox
+
{{:Rockomax Mark 55 Radial Mount Liquid Engine/Box}}
|Name=Mark 55 Radial mount engine
 
|Role=Liquid Fuel Engine
 
|Class=LiquidEngine
 
|File=Mark 55 Radial mount engine.png
 
|Costs=850
 
|Mass=1.5
 
|More=
 
{{PB-more|Minimum Thrust|0 N}}
 
{{PB-more|Maximum Thrust|80 N}}
 
{{PB-more|Vacuum Isp|320}}
 
{{PB-more|1 Atm Isp|280}}
 
{{PB-more|Gimbal Range|1.0}}
 
|since=v0.16
 
|cfg=Parts/liquidEngine3/part.cfg
 
}}
 
  
The '''Mark 55 Radial mount engine''' is used to provide thrust to a rocket and is fueled by [[FL-T250 Fuel Tank]]s.
+
The '''Mk-55 "Thud" Liquid Fuel Engine''' is a [[Reaction engine#Liquid fuel rocket engines|liquid fuel rocket engine]] which does not attach at a node but rather to the side of other parts, typically a [[liquid fuel]]/[[oxidizer]] tank.
  
 
== Usage ==
 
== Usage ==
The Mark 55 is the third [[Liquid Fuel]] engine with thrust vector control, that allows efficient control of the rocket during descent and landing. The Mk 55 is relatively heavy and low thrust compared with the size 1 engines -- its [[TWR]] is only slightly better than the [[LV-909_Liquid_Fuel_Engine|LV-909's]]. The low thrust (and radial mounting) makes a single Mk55 unsuitable as a main engine on most lower stages, but it can be used to augment other engines.  More importantly, the Mk55 is radially mounted meaning you can position landing struts between them.  can extend past it.  Because of this, the mk55 is one of the primary choices for lander engines in 0.16.x as it can be placed above or in-between landing legs.  The Isp of this engine is relatively poor (comparable to the [[LV-T30_Liquid_Fuel_Engine_(Large)|large LV-T30]]), but landers typically have limited ΔV requirements, making this a non-issue.
+
The Mk-55 is a [[liquid fuel engine]] with [[Gimbal|thrust vector control]] that allows efficient control of the rocket during descent and landing. The Mk-55 is fairly low-thrust. This is offset by its comparatively low weight, however. The engine has a [[Thrust-to-weight ratio|TWR]] comparable to the [[LV-T45 Liquid Fuel Engine|LV-T45]].  
  
Unlike the the LV series the Mk55 can be mounted radially (including on [[Radial Decouplers]]) allowing for multiple placement around a single fuel tank. The Mk55 must be directly connected to a non-empty  Fuel Tank, or fed by a fuel line to produce any thrust.
+
The low thrust and radial mounting makes a single Mk-55 unsuitable as a main engine on most lower stages, but it can be used to augment other engines. A common use of this engine is in lander designs, as it eliminates the need to have a vulnerable engine in an easily-damaged position.  The [[Specific impulse|I<sub>sp</sub>]] of this engine is adequate, being 275&nbsp;s at 1&nbsp;[[w:Atmosphere_(unit)|atm]] and 305&nbsp;s in vacuum, not far behind the [[LV-T30]] and LV-T45.
  
The thrust vectoring on this engine tends to be more useful than on the LV-T45, due to both the radial mounting, and use as a stabilizer.
+
Additionally, landing legs can be added to these engines. This is an advantage shared with other radial engines: the [[LV-1R]], the [[24-77_"Twitch"_Liquid_Fuel_Engine|24-77]] and the [[O-10_"Puff"_MonoPropellant_Fuel_Engine|O-10]].
  
== Description ==
+
Like the LV-1R and the 24-77, this engine has the highest [[gimbal]] range at 8 degrees.
{{Quote
+
 
|After an intesnive search for an engineer crazy enough to plan and build a revolutionary new engine type, researchers stumbled across Eugene Kerman - or, as he's known by night... THE CONSTRUCTOR! He failed miserably, and this is what we got instead.|Jebediah kerman's Junkyard and Spaceship Parts Co.}}
+
== Product description ==
 +
{{Quote|After an intensive search for an engineer crazy enough to plan and build a revolutionary new engine type, researchers turned to  renowned engineer Eumon Kerman, one of the top minds in the industry. He failed miserably at the job, and this is what we ended up with. Hey, at least it works well with other (Rockomax) large (Rockomax) engines when you want more control. Sorry, no combo deals.}}
  
 
== Changes ==
 
== Changes ==
;{{Version|0.17|}}
+
 
 +
[[File:Mark 55 Radial mount engine.png|100px|thumb|left|Appearance before [[1.0.5]] ]]
 +
{{clear|left}}
 +
 
 +
;[[1.0.5]]
 +
* Remodeled and retextured
 +
;[[1.0.3]]
 +
* Description changed
 +
;[[0.90]]
 +
* Cost reduced from 850 to 800, Isp increased from 290 vacuum / 320 atmosphere to 360 vacuum / 320 atmosphere, gimbal range increased from 3° to 5°.
 +
;[[0.18]]
 +
* Description changed
 +
;[[0.18]]
 +
* Mass reduced from from 1.5 to 0.9, gimbal range increased to 3°, Isp curve changed from 330 vacuum/280 atmosphere to 320 vacuum/290 atmosphere, heat production increased from 300 to 350.
 +
;[[0.17]]
 
* Renamed 'Mark 55 Radial mount engine' to 'Rockomax Mark 55 Radial Mount Liquid Engine'
 
* Renamed 'Mark 55 Radial mount engine' to 'Rockomax Mark 55 Radial Mount Liquid Engine'
;{{Version|0.16|}}
+
* Thrust increased from 80&nbsp;kN to 120&nbsp;kN.
 +
* Manufacturer changed from Jebediah Kerman's Junkyard and Spaceship Parts Co. to Rockomax Conglomerate.
 +
;[[0.16]]
 
* Initial Release
 
* Initial Release
 
  
 
{{Parts}}
 
{{Parts}}
 +
[[Category:Liquid fuel engines]]

Latest revision as of 08:51, 19 November 2015

Mk-55 "Thud" Liquid Fuel Engine
Part image
Liquid fuel engine by
Rockomax Conglomerate
Radial size Radial mounted
Cost (total) 820.00 Fund
Mass (total) 0.90 t
Drag 0.2
Max. Temp. 2000 K
Impact Tolerance 7 m/s
Research Advanced rocketry.png Advanced Rocketry
Unlock cost 3500 Fund
Since version 0.16
Part configuration liquidEngineMk55
Liquid fuel engine
Maximum thrust (1 atm) 108.20 kN
(vacuum) 120.00 kN
Isp (1 atm) 275 s
(vacuum) 305 s
Fuel con­sumption 8.02 units of fuel/s


Thrust vectoring 8 °
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

The Mk-55 "Thud" Liquid Fuel Engine is a liquid fuel rocket engine which does not attach at a node but rather to the side of other parts, typically a liquid fuel/oxidizer tank.

Usage

The Mk-55 is a liquid fuel engine with thrust vector control that allows efficient control of the rocket during descent and landing. The Mk-55 is fairly low-thrust. This is offset by its comparatively low weight, however. The engine has a TWR comparable to the LV-T45.

The low thrust and radial mounting makes a single Mk-55 unsuitable as a main engine on most lower stages, but it can be used to augment other engines. A common use of this engine is in lander designs, as it eliminates the need to have a vulnerable engine in an easily-damaged position. The Isp of this engine is adequate, being 275 s at 1 atm and 305 s in vacuum, not far behind the LV-T30 and LV-T45.

Additionally, landing legs can be added to these engines. This is an advantage shared with other radial engines: the LV-1R, the 24-77 and the O-10.

Like the LV-1R and the 24-77, this engine has the highest gimbal range at 8 degrees.

Product description

After an intensive search for an engineer crazy enough to plan and build a revolutionary new engine type, researchers turned to renowned engineer Eumon Kerman, one of the top minds in the industry. He failed miserably at the job, and this is what we ended up with. Hey, at least it works well with other (Rockomax) large (Rockomax) engines when you want more control. Sorry, no combo deals.

Changes

Appearance before 1.0.5
1.0.5
  • Remodeled and retextured
1.0.3
  • Description changed
0.90
  • Cost reduced from 850 to 800, Isp increased from 290 vacuum / 320 atmosphere to 360 vacuum / 320 atmosphere, gimbal range increased from 3° to 5°.
0.18
  • Description changed
0.18
  • Mass reduced from from 1.5 to 0.9, gimbal range increased to 3°, Isp curve changed from 330 vacuum/280 atmosphere to 320 vacuum/290 atmosphere, heat production increased from 300 to 350.
0.17
  • Renamed 'Mark 55 Radial mount engine' to 'Rockomax Mark 55 Radial Mount Liquid Engine'
  • Thrust increased from 80 kN to 120 kN.
  • Manufacturer changed from Jebediah Kerman's Junkyard and Spaceship Parts Co. to Rockomax Conglomerate.
0.16
  • Initial Release