H250G Data (RockSim)
Accuracy of this data file:
| |
This File |
Certified |
± |
| Diameter |
29 mm |
29 mm |
= |
| Length |
229 mm |
238 mm |
−4% |
| Prop. Weight |
116 g |
116 g |
= |
| Total Weight |
256 g |
256 g |
= |
| Avg. Thrust |
255.0 N |
250.0 N |
+2% |
| Max. Thrust |
320.7 N |
— |
|
| Total Impulse |
231.0 Ns |
231.0 Ns |
= |
| Burn Time |
0.9 s |
0.9 s |
+1% |
File Errors
File is usable, but has some problems:
- invalid massFrac value "0."; expected ratio
- invalid Isp value "0."; expected seconds
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File Notes
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Raw Data
<engine-database>
<engine-list>
<engine mfg="Aerotech" code="H250G" Type="reloadable" dia="29." len="228.93"
initWt="256." propWt="116.3" delays="6,10,14" auto-calc-mass="1"
auto-calc-cg="1" avgThrust="251.105" peakThrust="320.655" throatDia="0."
exitDia="0." Itot="231.017" burn-time="0.92" massFrac="0." Isp="0." tDiv="10"
tStep="-1." tFix="1" FDiv="10" FStep="-1." FFix="1" mDiv="10" mStep="-1."
mFix="1" cgDiv="10" cgStep="-1." cgFix="1">
<comments>I don't know that
these ejection
delays are correct.
This was made
using the Aerotech
test thrust curves.
By Tobin Yehle,
11/11/07.</comments>
<data>
<eng-data t="0." f="0." m="0." cg="0."/>
<eng-data t="0.00250627" f="88.6915" m="0." cg="0."/>
<eng-data t="0.0125313" f="177.383" m="0." cg="0."/>
<eng-data t="0.0300752" f="279.719" m="0." cg="0."/>
<eng-data t="0.0726817" f="311.103" m="0." cg="0."/>
<eng-data t="0.145363" f="320.654" m="0." cg="0."/>
<eng-data t="0.24812" f="311.103" m="0." cg="0."/>
<eng-data t="0.308271" f="297.458" m="0." cg="0."/>
<eng-data t="0.398496" f="282.448" m="0." cg="0."/>
<eng-data t="0.45614" f="270.168" m="0." cg="0."/>
<eng-data t="0.593985" f="238.785" m="0." cg="0."/>
<eng-data t="0.691729" f="221.047" m="0." cg="0."/>
<eng-data t="0.799499" f="218.318" m="0." cg="0."/>
<eng-data t="0.83208" f="210.131" m="0." cg="0."/>
<eng-data t="0.844612" f="189.663" m="0." cg="0."/>
<eng-data t="0.907268" f="13.6449" m="0." cg="0."/>
<eng-data t="0.92" f="0." m="0." cg="0."/>
</data>
</engine>
</engine-list>
</engine-database>
You can also download the raw data points as a CSV file.
