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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 91 motors that fit and appear to have enough thrust (707 motors didn't fit, 4 motors failed safety checks). 95 motor had thrust curves available and 178 flight simulations were performed. Browse the motors that did and didn't work right here or download the results as a spreadsheet.

The Rocket

Rocket Name:   Smokin' Rockets Mega Nuk w/75
Owner: John Sigmon
Body Diameter: 7.75in
Dry Weight: 44.00lb
MMT Diameter: 75.0mm
MMT Length: 36.00in
CD: 0.43

Motors That Work

These motors fit your rocket and appear to have enough thrust to lift it safely. If thrust curves are available, a quick simulation has been run to give a rough idea of the performance of your rocket on this motor. We encourage you to run a more complete simulation with any motor you plan to use; see the simulators page for more info.

  Motor Weight Launch Velocity Accel Altitude Time Delay
OK Contrail K630 51.83lb 58ft/s 133ft/s 2.9G 414ft 6.1s 4s
OK Contrail K707 52.10lb 73ft/s 136ft/s 5.0G 426ft 5.9s 4s
OK Contrail K456 52.17lb 56ft/s 130ft/s 2.9G 509ft 6.9s 3s
OK AeroTech K1499 47.84lb 94ft/s 174ft/s 7.1G 520ft 6.1s 5s
OK Cesaroni K735 49.53lb 56ft/s 205ft/s 3.1G 878ft 8.7s 6s
OK Contrail K543 51.95lb 58ft/s 188ft/s 2.9G 884ft 8.8s 5s
OK Cesaroni K510 49.71lb 51ft/s 205ft/s 2.1G 1,193ft 10.8s 6s
OK AeroTech K780 50.47lb 63ft/s 247ft/s 3.3G 1,227ft 10.0s 7s
OK AeroTech K560 50.05lb 53ft/s 215ft/s 2.6G 1,246ft 10.7s 6s
OK Cesaroni K661 49.57lb 53ft/s 239ft/s 2.5G 1,265ft 10.6s 7s
OK Cesaroni K1085 49.36lb 71ft/s 279ft/s 4.4G 1,384ft 10.2s 8s
OK Cesaroni L585 50.14lb 50ft/s 240ft/s 2.0G 1,397ft 11.5s 7s
OK Gorilla L695 51.50lb 48ft/s 266ft/s 3.8G 1,435ft 11.2s 7s
OK Cesaroni K2000 49.43lb 105ft/s 308ft/s 10.4G 1,450ft 9.8s 9s
OK AeroTech K1000 49.74lb 73ft/s 285ft/s 4.2G 1,488ft 10.5s 8s
OK Cesaroni L820 51.54lb 55ft/s 303ft/s 3.3G 1,765ft 12.1s 8s
OK Loki L780 51.72lb 53ft/s 306ft/s 3.1G 1,816ft 12.4s 9s
OK Cesaroni L910 49.77lb 66ft/s 314ft/s 3.8G 1,842ft 12.0s 9s
OK Gorilla L425 51.72lb 49ft/s 231ft/s 2.3G 1,899ft 14.0s 6s
OK Cesaroni L645 52.27lb 51ft/s 307ft/s 2.3G 2,138ft 13.9s 9s
OK Gorilla L789 51.45lb 57ft/s 331ft/s 3.0G 2,141ft 13.3s 9s
OK Loki L930 51.80lb 62ft/s 367ft/s 3.9G 2,476ft 13.8s 10s
OK Gorilla L985 52.01lb 62ft/s 384ft/s 3.9G 2,487ft 13.9s 10s
OK AeroTech L1150 52.10lb 76ft/s 386ft/s 4.7G 2,491ft 13.4s 10s
OK Cesaroni L3200 51.20lb 132ft/s 440ft/s 15.7G 2,535ft 12.5s 11s
OK Cesaroni L851 52.35lb 59ft/s 370ft/s 3.3G 2,572ft 14.3s 10s
OK AeroTech L875 54.09lb 60ft/s 372ft/s 3.4G 2,579ft 14.3s 10s
OK Gorilla L1150 51.72lb 72ft/s 397ft/s 6.7G 2,634ft 13.7s 11s
OK Cesaroni L995 51.92lb 75ft/s 383ft/s 4.6G 2,636ft 13.9s 10s
OK AeroTech L850 52.25lb 70ft/s 370ft/s 4.2G 2,654ft 14.1s 9s
OK AeroTech L900 54.41lb 60ft/s 379ft/s 3.4G 2,664ft 14.5s 10s
OK Cesaroni L800 51.74lb 68ft/s 365ft/s 4.2G 2,688ft 14.5s 10s
OK Gorilla L1112 52.00lb 73ft/s 405ft/s 4.6G 2,729ft 14.0s 10s
OK AeroTech L1040 54.40lb 66ft/s 396ft/s 4.3G 2,750ft 14.3s 10s
OK Cesaroni L1050 51.60lb 70ft/s 403ft/s 4.3G 2,780ft 14.3s 11s
OK Loki L840 52.26lb 65ft/s 385ft/s 4.2G 2,872ft 14.7s 10s
OK AeroTech L1520 52.05lb 87ft/s 444ft/s 6.4G 2,920ft 14.0s 11s
OK Cesaroni L1720 51.37lb 93ft/s 457ft/s 7.6G 2,922ft 13.8s 12s
OK Cesaroni L1355 54.94lb 84ft/s 438ft/s 6.4G 3,040ft 14.4s 11s
OK Loki L1482 51.80lb 84ft/s 461ft/s 6.5G 3,044ft 14.3s 12s
OK AeroTech L1390 52.55lb 82ft/s 449ft/s 6.2G 3,077ft 14.5s 12s
OK AeroTech L1170 55.00lb 75ft/s 446ft/s 5.0G 3,190ft 15.0s 11s
OK AeroTech L1250 56.45lb 76ft/s 449ft/s 5.1G 3,269ft 15.2s 11s
OK Gorilla L1065 55.82lb 82ft/s 453ft/s 6.3G 3,470ft 15.3s 11s
OK Cesaroni L1350 51.87lb 82ft/s 488ft/s 5.7G 3,522ft 15.4s 12s
OK AMW L1290 55.90lb 74ft/s 490ft/s 5.1G 3,672ft 16.1s 12s
OK AeroTech L1420 54.06lb 83ft/s 516ft/s 6.0G 3,799ft 15.9s 13s
OK AeroTech L1365 54.82lb 84ft/s 515ft/s 5.7G 3,901ft 16.3s 13s
OK Cesaroni L1410 55.28lb 78ft/s 525ft/s 5.8G 3,950ft 16.4s 13s
OK Cesaroni L1115 53.71lb 81ft/s 506ft/s 5.9G 4,158ft 17.0s 12s
OK Cesaroni L1685 57.34lb 97ft/s 544ft/s 7.9G 4,159ft 16.3s 13s
OK Cesaroni L1395 53.53lb 84ft/s 546ft/s 6.6G 4,172ft 16.6s 13s
OK Loki M1200 55.83lb 70ft/s 527ft/s 5.2G 4,244ft 17.2s 13s
OK Gorilla M745 56.39lb 79ft/s 436ft/s 5.2G 4,248ft 17.8s 11s
OK Cesaroni L2375 53.17lb 110ft/s 605ft/s 10.3G 4,327ft 16.2s 14s
OK Cesaroni M1101 54.89lb 73ft/s 522ft/s 4.9G 4,355ft 17.5s 13s
OK AeroTech M1350 54.60lb 89ft/s 547ft/s 6.3G 4,414ft 17.0s 13s
OK Loki M900 56.19lb 58ft/s 502ft/s 3.3G 4,424ft 18.4s 12s
OK AeroTech L2200 54.54lb 110ft/s 597ft/s 12.0G 4,425ft 16.3s 14s
OK AeroTech M1500 54.79lb 82ft/s 568ft/s 6.1G 4,455ft 17.1s 14s
OK Gorilla M1355 56.13lb 82ft/s 555ft/s 6.7G 4,488ft 17.2s 13s
OK AeroTech M1550 56.44lb 95ft/s 590ft/s 7.4G 4,713ft 17.4s 14s
OK AeroTech M1297 54.22lb 92ft/s 567ft/s 7.3G 4,744ft 17.6s 13s
OK Cesaroni M1230 54.68lb 80ft/s 563ft/s 5.3G 4,752ft 18.0s 13s
OK AeroTech M1780 54.39lb 103ft/s 614ft/s 8.9G 4,847ft 17.3s 14s
OK Cesaroni M2250 53.73lb 112ft/s 648ft/s 10.3G 4,929ft 17.1s 15s
OK Cesaroni M1830 53.97lb 97ft/s 635ft/s 8.3G 5,017ft 17.6s 14s
OK Cesaroni M1160 56.56lb 71ft/s 575ft/s 4.6G 5,024ft 18.7s 14s
OK Gorilla M1665 56.39lb 97ft/s 614ft/s 8.2G 5,031ft 17.7s 14s
OK AeroTech M650 55.30lb 70ft/s 451ft/s 4.4G 5,033ft 19.8s 8s
OK Cesaroni M1770 57.21lb 90ft/s 645ft/s 7.0G 5,161ft 18.0s 15s
OK Cesaroni M1670 55.53lb 93ft/s 639ft/s 7.9G 5,331ft 18.3s 14s
OK Gorilla M1952 56.00lb 107ft/s 661ft/s 9.9G 5,361ft 18.0s 15s
OK Cesaroni M2075 59.85lb 109ft/s 660ft/s 10.1G 5,378ft 18.0s 15s
OK Cesaroni M1810 55.94lb 94ft/s 675ft/s 7.6G 5,484ft 18.4s 15s
OK Cesaroni M1401 56.73lb 81ft/s 633ft/s 5.6G 5,515ft 19.0s 14s
OK Cesaroni M1675 55.51lb 95ft/s 669ft/s 7.5G 5,591ft 18.5s 15s
OK Cesaroni M1400 55.69lb 93ft/s 630ft/s 7.9G 5,592ft 18.9s 14s
OK Cesaroni M3100 55.06lb 126ft/s 747ft/s 14.4G 5,638ft 17.8s 16s
OK Loki M1882 56.20lb 103ft/s 694ft/s 9.5G 5,669ft 18.4s 15s
OK Cesaroni M1300 56.47lb 114ft/s 615ft/s 10.3G 5,773ft 19.1s 14s
OK Loki M1650 56.41lb 112ft/s 659ft/s 13.9G 5,878ft 18.9s 14s
OK AeroTech M1315 56.44lb 86ft/s 632ft/s 6.1G 5,940ft 19.6s 14s
OK Loki M2550 56.19lb 117ft/s 758ft/s 11.3G 6,045ft 18.6s 16s
OK Cesaroni M1540 57.02lb 96ft/s 689ft/s 8.5G 6,161ft 19.5s 15s
OK Cesaroni M3700 56.74lb 140ft/s 813ft/s 15.7G 6,241ft 18.5s 17s
OK Cesaroni M840 59.33lb 75ft/s 564ft/s 6.4G 6,577ft 22.0s 13s
OK Cesaroni M2045 57.38lb 107ft/s 784ft/s 9.1G 6,713ft 19.7s 16s
OK Cesaroni M2150 57.94lb 103ft/s 798ft/s 9.4G 6,815ft 19.9s 16s
OK Cesaroni M1590 57.40lb 100ft/s 742ft/s 8.1G 6,950ft 20.4s 16s
OK Cesaroni M2020 59.50lb 106ft/s 840ft/s 9.1G 7,674ft 20.9s 17s

Don't like the units? Login to set your preferences. Don't understand the results? See the motor guide help page.

Motors That Fail

These motors fit your rocket, but failed one safety check or another. They may actually work, but you should use them only with caution. We encourage you to run a more complete simulation to verify flight safety; see the simulators page for more info.

  Motor Reason
failedG Cesaroni K555 speed at end of launch guide too slow (43ft/s)
failedG Loki L480 speed at end of launch guide too slow (38ft/s)
failedG Contrail L369 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni L395 speed at end of launch guide too slow (39ft/s)

G These simulations were run with a launch guide length of 20ft (rod, rail or tower). If this is not correct, launch guide lengths can be specified for your saved rockets. (The minimum velocity required is approximately 15m/s or 50ft/s.)

Download the Results

The data is presented in a compact form in the tables above, broken down by motors that worked and those that did not. If you would like to analyze the data further, this section provides download links for files in a generic spreadsheet format (comma-separated value, or CSV) that can be opened with almost any spreadsheet program.

CSV Excel   Download full details of the simulation runs with the various motors:
Unable to generate download file from guide run!
Client: 54.197.24.206
Protocol: HTTP/1.1
URI: /motorguide.jsp
Method: GET
Query: rocket=6813

java.io.FileNotFoundException: /home/orgthrus/public_html/guide/LLXATW/Smokin'_Rockets_Mega_Nuk_w/75-results-pass.csv (No such file or directory)

  1. java.io.FileOutputStream.open(Native Method)
  2. java.io.FileOutputStream.(FileOutputStream.java:179)
  3. java.io.FileOutputStream.(FileOutputStream.java:131)
  4. java.io.FileWriter.(FileWriter.java:73)
  5. org.thrustcurve.sim.GuideExporter.export(GuideExporter.java:100)
  6. org.thrustcurve.jsp.GuideResultATag.doTag(GuideResultATag.java:184)
  7. org.thrustcurve.jsp.SimpleTagBase.doStartTag(SimpleTagBase.java:16)
  8. org.apache.jsp.motorguide_jsp._jspx_meth_tc_005fguideResultA_005f0(motorguide_jsp.java:1062)
  9. org.apache.jsp.motorguide_jsp._jspService(motorguide_jsp.java:988)
  10. org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
  11. javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
  12. org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:371)
  13. org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:308)
  14. org.apache.jasper.servlet.JspServlet.service(JspServlet.java:259)
  15. javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
  16. org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
  17. org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
  18. org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
  19. org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
  20. org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
  21. org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
  22. org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
  23. org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
  24. org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:200)
  25. org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
  26. org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:775)
  27. org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:704)
  28. org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:897)
  29. org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
  30. java.lang.Thread.run(Thread.java:595)

Please let us know about this problem (including the above info).

,
Unable to generate download file from guide run!
Client: 54.197.24.206
Protocol: HTTP/1.1
URI: /motorguide.jsp
Method: GET
Query: rocket=6813

java.io.FileNotFoundException: /home/orgthrus/public_html/guide/LLXATW/Smokin'_Rockets_Mega_Nuk_w/75-results-fail.csv (No such file or directory)

  1. java.io.FileOutputStream.open(Native Method)
  2. java.io.FileOutputStream.(FileOutputStream.java:179)
  3. java.io.FileOutputStream.(FileOutputStream.java:131)
  4. java.io.FileWriter.(FileWriter.java:73)
  5. org.thrustcurve.sim.GuideExporter.export(GuideExporter.java:100)
  6. org.thrustcurve.jsp.GuideResultATag.doTag(GuideResultATag.java:184)
  7. org.thrustcurve.jsp.SimpleTagBase.doStartTag(SimpleTagBase.java:16)
  8. org.apache.jsp.motorguide_jsp._jspx_meth_tc_005fguideResultA_005f1(motorguide_jsp.java:1083)
  9. org.apache.jsp.motorguide_jsp._jspService(motorguide_jsp.java:992)
  10. org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
  11. javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
  12. org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:371)
  13. org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:308)
  14. org.apache.jasper.servlet.JspServlet.service(JspServlet.java:259)
  15. javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
  16. org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
  17. org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
  18. org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
  19. org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
  20. org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
  21. org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
  22. org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
  23. org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
  24. org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:200)
  25. org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
  26. org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:775)
  27. org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:704)
  28. org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:897)
  29. org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
  30. java.lang.Thread.run(Thread.java:595)

Please let us know about this problem (including the above info).

, or
Unable to generate download file from guide run!
Client: 54.197.24.206
Protocol: HTTP/1.1
URI: /motorguide.jsp
Method: GET
Query: rocket=6813

java.io.FileNotFoundException: /home/orgthrus/public_html/guide/LLXATW/Smokin'_Rockets_Mega_Nuk_w/75-results-all.csv (No such file or directory)

  1. java.io.FileOutputStream.open(Native Method)
  2. java.io.FileOutputStream.(FileOutputStream.java:179)
  3. java.io.FileOutputStream.(FileOutputStream.java:131)
  4. java.io.FileWriter.(FileWriter.java:73)
  5. org.thrustcurve.sim.GuideExporter.export(GuideExporter.java:100)
  6. org.thrustcurve.jsp.GuideResultATag.doTag(GuideResultATag.java:184)
  7. org.thrustcurve.jsp.SimpleTagBase.doStartTag(SimpleTagBase.java:16)
  8. org.apache.jsp.motorguide_jsp._jspx_meth_tc_005fguideResultA_005f2(motorguide_jsp.java:1104)
  9. org.apache.jsp.motorguide_jsp._jspService(motorguide_jsp.java:997)
  10. org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
  11. javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
  12. org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:371)
  13. org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:308)
  14. org.apache.jasper.servlet.JspServlet.service(JspServlet.java:259)
  15. javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
  16. org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
  17. org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
  18. org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
  19. org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
  20. org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
  21. org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
  22. org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
  23. org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
  24. org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:200)
  25. org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
  26. org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:775)
  27. org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:704)
  28. org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:897)
  29. org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
  30. java.lang.Thread.run(Thread.java:595)

Please let us know about this problem (including the above info).

.
 
RockSim  
Unable to generate download file from guide run!
Client: 54.197.24.206
Protocol: HTTP/1.1
URI: /motorguide.jsp
Method: GET
Query: rocket=6813

java.io.FileNotFoundException: /home/orgthrus/public_html/guide/LLXATW/Smokin'_Rockets_Mega_Nuk_w/75-smartsim-all.csv (No such file or directory)

  1. java.io.FileOutputStream.open(Native Method)
  2. java.io.FileOutputStream.(FileOutputStream.java:179)
  3. java.io.FileOutputStream.(FileOutputStream.java:131)
  4. java.io.FileWriter.(FileWriter.java:73)
  5. org.thrustcurve.sim.GuideExporter.export(GuideExporter.java:100)
  6. org.thrustcurve.jsp.GuideResultATag.doTag(GuideResultATag.java:184)
  7. org.thrustcurve.jsp.SimpleTagBase.doStartTag(SimpleTagBase.java:16)
  8. org.apache.jsp.motorguide_jsp._jspx_meth_tc_005fguideResultA_005f3(motorguide_jsp.java:1124)
  9. org.apache.jsp.motorguide_jsp._jspService(motorguide_jsp.java:1008)
  10. org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
  11. javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
  12. org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:371)
  13. org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:308)
  14. org.apache.jasper.servlet.JspServlet.service(JspServlet.java:259)
  15. javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
  16. org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
  17. org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
  18. org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
  19. org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
  20. org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
  21. org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
  22. org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
  23. org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
  24. org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:200)
  25. org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
  26. org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:775)
  27. org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:704)
  28. org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:897)
  29. org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
  30. java.lang.Thread.run(Thread.java:595)

Please let us know about this problem (including the above info).

the list of motors that fit your rocket into a batch for use with SMARTSim. (See the Simulators page for more info.)

You should download these files to your machine and then open them. Normally, clicking the link will prompt you to do this. However, if your browser insists on opening the file as plain text, you can right-click (control-click on the Mac) on the link and chose Save File As (or similar).

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