L1222-SM Data (RockSim)
Accuracy of this data file:
| |
This File |
Certified |
± |
| Diameter |
75 mm |
75 mm |
= |
| Length |
1,340 mm |
1,371 mm |
−2% |
| Prop. Weight |
3,900 g |
786 g |
+396% |
| Total Weight |
4,989 g |
4,989 g |
= |
| Avg. Thrust |
1,219.6 N |
1,173.0 N |
+4% |
| Max. Thrust |
2,725.0 N |
2,892.0 N |
−6% |
| Total Impulse |
3,691.6 Ns |
3,682.0 Ns |
= |
| Burn Time |
3.0 s |
3.1 s |
−2% |
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Raw Data
<engine-database>
<engine-list>
<engine FDiv="10" FFix="1" FStep="-1." Isp="96.58" Itot="3693.88" Type="hybrid" auto-calc-cg="1" auto-calc-mass="1" avgThrust="1191.57" burn-time="3.1" cgDiv="10" cgFix="1" cgStep="-1." code="L1222" delays="1000" dia="75." exitDia="0." initWt="4989." len="1339.85" mDiv="10" mFix="1" mStep="-1." massFrac="78.17" mfg="Contrail" peakThrust="2725." propWt="3900." tDiv="10" tFix="1" tStep="-1." throatDia="0.">
<comments>Corrected 2026-09-23 from ThrustCurve.org simfile 5f4294d20002e90000000332 (user, RockSim).
Separated repeated timestamp(s): t=0 s (2 points moved to 0, 0.01 s). Each jump now takes at most 0.01 s instead of zero time; no thrust value changed.
Contrail Rockets LLC Hybrid Rocket Motor (L1222)
75mm-3200cc Motor System
Sparky Hybrid Fuel
Data Input By Tom R. Sanders of Contrail Rockets
</comments>
<data>
<eng-data cg="669.925" f="0." m="3900." t="0."/>
<eng-data cg="669.925" f="455." m="3900." t="0.01"/>
<eng-data cg="669.925" f="455." m="3779.9" t="0.25"/>
<eng-data cg="669.925" f="2725." m="3360.22" t="0.5"/>
<eng-data cg="669.925" f="1816." m="2760.92" t="0.75"/>
<eng-data cg="669.925" f="680." m="125.64" t="2.75"/>
<eng-data cg="669.925" f="0." m="0." t="3.1"/>
</data>
</engine>
</engine-list>
</engine-database>
You can also download the raw data points as a CSV file.
