I747-HP Data (RockSim)
Accuracy of this data file:
| |
This File |
Certified |
± |
| Diameter |
38 mm |
38 mm |
= |
| Length |
719 mm |
719 mm |
= |
| Prop. Weight |
166 g |
166 g |
= |
| Total Weight |
839 g |
839 g |
= |
| Avg. Thrust |
1,124.9 N |
732.0 N |
+54% |
| Max. Thrust |
4,644.0 N |
464.0 N |
+901% |
| Total Impulse |
431.0 Ns |
431.0 Ns |
= |
| Burn Time |
0.4 s |
0.6 s |
−35% |
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Raw Data
<engine-database>
<engine-list>
<engine FDiv="10" FFix="1" FStep="-1." Isp="264.76" Itot="431" Type="hybrid" auto-calc-cg="1" auto-calc-mass="1" avgThrust="936.956522" burn-time="0.46" cgDiv="10" cgFix="1" cgStep="-1." code="I747" delays="1000" dia="38." exitDia="0." initWt="839." len="719." mDiv="10" mFix="1" mStep="-1." massFrac="19.79" mfg="Contrail" peakThrust="4644" propWt="166." tDiv="10" tFix="1" tStep="-1." throatDia="0.">
<comments>Corrected 2026-09-23; supersedes ThrustCurve.org simfile 5f4294d20002e90000000312 (user, RockSim).
Curve rebuilt from the Contrail I747HP TRA cert letter plot: 0.01 s rise, 4644 N spike at 0.015 s, ~1200 N to 0.24 s, tail to 0.46 s, total 431 Ns. Approximate: read by eye.
</comments>
<data>
<eng-data cg="355.6" f="0" m="166" t="0"/>
<eng-data cg="355.6" f="1578.644789" m="163.567935" t="0.008"/>
<eng-data cg="355.6" f="4644" m="155.179636" t="0.015"/>
<eng-data cg="355.6" f="1240.363763" m="150.646901" t="0.019"/>
<eng-data cg="355.6" f="1409.504276" m="109.312649" t="0.1"/>
<eng-data cg="355.6" f="1296.743934" m="57.196964" t="0.2"/>
<eng-data cg="355.6" f="1127.603421" m="38.522177" t="0.24"/>
<eng-data cg="355.6" f="958.462908" m="30.487676" t="0.26"/>
<eng-data cg="355.6" f="699.114121" m="17.719333" t="0.3"/>
<eng-data cg="355.6" f="451.041368" m="8.859666" t="0.34"/>
<eng-data cg="355.6" f="248.072753" m="3.474379" t="0.38"/>
<eng-data cg="355.6" f="101.484308" m="0.781735" t="0.42"/>
<eng-data cg="355.6" f="0" m="0" t="0.46"/>
</data>
</engine>
</engine-list>
</engine-database>
You can also download the raw data points as a CSV file.
