Difference between revisions of "White Dwarf"

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(The scaled-down version of White Giant, used to gain experience with bipropellant liquid rocket engines.)
 
 
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White Dwarf is a scaled down test version of the [[White Giant]] engine that is intended to launch [[Panthera]]. The operating parameters are shown in the table below:
White Dwarf is a scaled down test version of the [[White Giant]] engine that is intended to launch [[Panthera]]. The operating parameters are shown in the table below:


<center>
{| class="wikitable"
{| class="wikitable"
|+Operating Conditions
|+Operating Conditions
Line 9: Line 10:
|-
|-
|Fuel
|Fuel
|80% Isopropyl alcohol (IPA, C3H8O), 20% water (by mass)
|75% Isopropyl alcohol (IPA, C3H8O), 25% water (by mass)
|-
|-
|Thrust
|Thrust
Line 16: Line 17:
|Chamber pressure
|Chamber pressure
|10 bar
|10 bar
|-
|Chamber temperature
|2857 K
|-
|-
|O/F ratio
|O/F ratio
Line 24: Line 28:
|-
|-
|Mass flow rate
|Mass flow rate
|0.803 kg/s (0.625 N2O, 0.143 IPA, 0.0357 water)
|0.803 kg/s (0.625 N2O, 0.134 IPA, 0.044 water)
|}
|}
</center>
==Resources==
* [[:File:WHITE DWARF.pdf|Overall Drawing]]


[[File:White Dwarf Cut with Injector.PNG|thumb|400px|Cutaway of the White Dwarf CAD, with the cold-flow injector shown for scale.]]
[[File:WD Cross Section With Gussets.png|thumb|400x400px|Cutaway of the White Dwarf CAD.]]
[[File:White Dwarf Iso No Cut.png|thumb|400px|Isometric view of the White Dwarf CAD, without the injector.]]
[[File:White Dwarf Mounting Face.png|thumb|400x400px|Outside view of the White Dwarf CAD.]]
[[File:White Dwarf Iso Cut.PNG|thumb|400px|Isometric cut-away view of the White Dwarf CAD, without the injector.]]


==Combustion Chamber==
==Combustion Chamber==
The [[White Dwarf Combustion Chamber]] uses a water-cooled jacket, with a graphite nozzle. The cooling channels are cut into an off-the-shelf copper tube using a CNC machine.
The [[White Dwarf Combustion Chamber|combustion chamber]] uses a water-cooled jacket, with a graphite nozzle that is bolted into a retainer ring. The cooling channels are cut into an off-the-shelf copper tube using a CNC machine.


==Injector==
==Injector==
The injector is intended to be a pintle design.
The [[White Dwarf Injector|injector]] is intended to be a pintle design.

Latest revision as of 00:28, 14 August 2022

Overview

White Dwarf is a scaled down test version of the White Giant engine that is intended to launch Panthera. The operating parameters are shown in the table below:

Operating Conditions
Oxidiser Nitrous oxide (N2O)
Fuel 75% Isopropyl alcohol (IPA, C3H8O), 25% water (by mass)
Thrust 1.5 kN
Chamber pressure 10 bar
Chamber temperature 2857 K
O/F ratio 3.5 (by mass - where the water is included in the 'fuel' mass)
Specific impulse 190 s (theoretical)
Mass flow rate 0.803 kg/s (0.625 N2O, 0.134 IPA, 0.044 water)

Resources

Cutaway of the White Dwarf CAD.
Outside view of the White Dwarf CAD.

Combustion Chamber

The combustion chamber uses a water-cooled jacket, with a graphite nozzle that is bolted into a retainer ring. The cooling channels are cut into an off-the-shelf copper tube using a CNC machine.

Injector

The injector is intended to be a pintle design.