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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 (696 motors didn't fit, 4 motors failed safety checks). 95 motor had thrust curves available and 177 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:   MAC Performance Radial Flyer w/75
Owner: John Sigmon
Body Diameter: 4.02in
Dry Weight: 9.50lb
MMT Diameter: 75.0mm
MMT Length: 36.00in
CD: 0.53

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 K707 17.60lb 69ft/s 494ft/s 16.7G 3,368ft 14.4s 12s
OK Contrail K630 17.33lb 54ft/s 518ft/s 10.7G 3,568ft 14.9s 13s
OK Contrail K456 17.67lb 61ft/s 532ft/s 10.4G 4,192ft 16.2s 13s
OK AeroTech K1499 13.34lb 98ft/s 702ft/s 28.6G 4,307ft 15.1s 14s
OK Contrail K543 17.45lb 64ft/s 714ft/s 10.6G 6,009ft 18.8s 15s
OK Cesaroni K735 15.03lb 56ft/s 848ft/s 12.7G 6,176ft 18.3s 15s
OK AeroTech K780 15.97lb 59ft/s 946ft/s 12.8G 7,220ft 19.5s 16s
OK Cesaroni K2000 14.93lb 100ft/s 1,116ft/s 38.0G 7,244ft 18.4s 17s
OK Cesaroni K1085 14.86lb 74ft/s 1,071ft/s 17.3G 7,504ft 19.1s 17s
OK Cesaroni K555 15.58lb 52ft/s 917ft/s 8.3G 7,551ft 20.4s 16s
OK AeroTech K560 15.55lb 55ft/s 880ft/s 10.4G 7,643ft 20.2s 15s
OK Cesaroni K661 15.07lb 58ft/s 977ft/s 10.4G 7,723ft 20.1s 16s
OK AeroTech K1000 15.24lb 78ft/s 1,066ft/s 16.2G 7,743ft 19.4s 17s
OK Cesaroni K510 15.21lb 58ft/s 889ft/s 9.1G 7,876ft 20.7s 16s
OK Cesaroni L585 15.64lb 57ft/s 982ft/s 8.6G 8,290ft 21.0s 16s
OK Cesaroni L820 17.04lb 58ft/s 1,101ft/s 12.0G 8,689ft 21.1s 17s
OK Cesaroni L910 15.27lb 72ft/s 1,163ft/s 14.5G 8,821ft 20.6s 17s
OK Loki L780 17.22lb 49ft/s 1,114ft/s 11.5G 8,897ft 21.3s 18s
OK Cesaroni L3200 16.70lb 122ft/s 1,459ft/s 52.6G 9,290ft 20.0s 19s
OK Gorilla L789 16.95lb 55ft/s 1,178ft/s 11.2G 9,630ft 21.8s 18s
OK AeroTech L1150 17.60lb 75ft/s 1,278ft/s 16.3G 9,823ft 21.4s 18s
OK Cesaroni L645 17.77lb 53ft/s 1,101ft/s 8.8G 9,970ft 22.7s 17s
OK Gorilla L1150 17.22lb 69ft/s 1,296ft/s 22.4G 10,040ft 21.5s 18s
OK Loki L930 17.30lb 70ft/s 1,247ft/s 13.7G 10,103ft 21.9s 18s
OK Gorilla L985 17.51lb 57ft/s 1,313ft/s 14.0G 10,157ft 22.1s 19s
OK Gorilla L425 17.22lb 56ft/s 912ft/s 8.9G 10,184ft 23.6s 16s
OK Cesaroni L995 17.42lb 75ft/s 1,257ft/s 15.9G 10,205ft 21.8s 18s
OK AeroTech L875 19.59lb 58ft/s 1,204ft/s 10.8G 10,254ft 22.6s 18s
OK AeroTech L1040 19.90lb 63ft/s 1,239ft/s 13.8G 10,279ft 22.3s 18s
OK AeroTech L850 17.75lb 68ft/s 1,203ft/s 14.4G 10,281ft 22.0s 17s
OK Cesaroni L1720 16.87lb 89ft/s 1,511ft/s 25.9G 10,289ft 21.1s 19s
OK Cesaroni L1355 20.44lb 79ft/s 1,319ft/s 19.7G 10,304ft 21.8s 19s
OK Gorilla L1112 17.50lb 72ft/s 1,324ft/s 15.8G 10,338ft 21.8s 18s
OK AeroTech L1520 17.55lb 82ft/s 1,428ft/s 21.4G 10,369ft 21.4s 19s
OK AeroTech L900 19.91lb 60ft/s 1,210ft/s 11.1G 10,431ft 22.8s 18s
OK Cesaroni L851 17.85lb 60ft/s 1,252ft/s 11.6G 10,436ft 22.5s 18s
OK Cesaroni L1050 17.10lb 69ft/s 1,335ft/s 15.2G 10,554ft 22.0s 18s
OK Loki L1482 17.30lb 76ft/s 1,514ft/s 20.2G 10,679ft 21.6s 19s
OK Cesaroni L800 17.24lb 70ft/s 1,211ft/s 14.6G 10,711ft 22.5s 18s
OK AeroTech L1390 18.05lb 82ft/s 1,421ft/s 20.3G 10,743ft 21.9s 19s
OK Loki L840 17.76lb 67ft/s 1,244ft/s 14.0G 10,797ft 22.4s 18s
OK AeroTech L1170 20.50lb 74ft/s 1,345ft/s 15.5G 10,873ft 22.5s 19s
OK AeroTech L1250 21.95lb 69ft/s 1,294ft/s 14.9G 11,178ft 23.2s 19s
OK Gorilla L1065 21.32lb 70ft/s 1,287ft/s 18.4G 11,309ft 22.9s 19s
OK Cesaroni L1350 17.37lb 82ft/s 1,543ft/s 19.2G 11,547ft 22.3s 19s
OK AeroTech L1420 19.56lb 80ft/s 1,554ft/s 18.8G 11,850ft 22.7s 20s
OK Cesaroni L1685 22.84lb 88ft/s 1,501ft/s 22.0G 11,884ft 22.8s 20s
OK AMW L1290 21.40lb 66ft/s 1,432ft/s 15.2G 11,940ft 23.6s 20s
OK AeroTech L1365 20.32lb 79ft/s 1,511ft/s 17.4G 12,103ft 23.2s 19s
OK Cesaroni L1410 20.78lb 70ft/s 1,542ft/s 17.3G 12,143ft 23.2s 20s
OK Cesaroni L2375 18.67lb 98ft/s 1,838ft/s 32.2G 12,217ft 22.2s 20s
OK AeroTech L2200 20.04lb 107ft/s 1,699ft/s 35.5G 12,366ft 22.5s 20s
OK Cesaroni L1395 19.03lb 86ft/s 1,632ft/s 20.4G 12,513ft 23.1s 20s
OK AeroTech M1350 20.10lb 81ft/s 1,562ft/s 19.1G 12,796ft 23.4s 19s
OK Cesaroni L1115 19.21lb 81ft/s 1,487ft/s 18.4G 12,813ft 23.7s 19s
OK Loki M1200 21.33lb 64ft/s 1,511ft/s 15.4G 12,828ft 24.0s 20s
OK AeroTech M1500 20.29lb 83ft/s 1,637ft/s 18.4G 12,978ft 23.6s 20s
OK Gorilla M1355 21.63lb 72ft/s 1,536ft/s 19.2G 13,026ft 24.0s 20s
OK Cesaroni M2250 19.23lb 105ft/s 1,874ft/s 31.3G 13,027ft 22.6s 20s
OK Cesaroni M1101 20.39lb 75ft/s 1,511ft/s 14.9G 13,030ft 23.9s 19s
OK AeroTech M1550 21.94lb 86ft/s 1,632ft/s 20.9G 13,179ft 23.8s 20s
OK AeroTech M1780 19.89lb 97ft/s 1,738ft/s 26.3G 13,216ft 23.2s 20s
OK AeroTech M1297 19.72lb 88ft/s 1,610ft/s 21.8G 13,294ft 23.5s 19s
OK Cesaroni M1830 19.47lb 90ft/s 1,817ft/s 24.8G 13,450ft 23.3s 20s
OK Cesaroni M1230 20.18lb 70ft/s 1,603ft/s 16.4G 13,496ft 24.0s 19s
OK Gorilla M745 21.89lb 67ft/s 1,221ft/s 15.3G 13,498ft 25.3s 18s
OK Gorilla M1665 21.89lb 88ft/s 1,653ft/s 23.3G 13,600ft 23.9s 21s
OK Cesaroni M1770 22.71lb 80ft/s 1,768ft/s 19.9G 13,691ft 24.0s 21s
OK Loki M900 21.69lb 55ft/s 1,440ft/s 10.2G 13,771ft 25.5s 20s
OK Cesaroni M3100 20.56lb 110ft/s 2,115ft/s 42.0G 13,774ft 22.9s 21s
OK Gorilla M1952 21.50lb 103ft/s 1,792ft/s 27.5G 13,867ft 23.8s 20s
OK Cesaroni M2075 25.35lb 93ft/s 1,688ft/s 25.6G 13,899ft 24.4s 21s
OK Cesaroni M1810 21.44lb 84ft/s 1,862ft/s 22.0G 14,116ft 24.0s 20s
OK Cesaroni M1160 22.06lb 63ft/s 1,594ft/s 13.5G 14,138ft 25.0s 20s
OK Loki M1882 21.70lb 94ft/s 1,870ft/s 26.9G 14,228ft 23.9s 21s
OK Cesaroni M1675 21.01lb 85ft/s 1,835ft/s 22.0G 14,327ft 24.0s 20s
OK Cesaroni M1401 22.23lb 75ft/s 1,713ft/s 16.0G 14,519ft 24.8s 20s
OK Loki M2550 21.69lb 104ft/s 2,047ft/s 32.0G 14,546ft 23.7s 21s
OK Cesaroni M1670 21.03lb 91ft/s 1,738ft/s 22.7G 14,584ft 24.9s 21s
OK Cesaroni M1400 21.19lb 90ft/s 1,699ft/s 22.4G 14,664ft 24.6s 20s
OK Cesaroni M3700 22.24lb 120ft/s 2,198ft/s 43.6G 14,792ft 23.8s 22s
OK Loki M1650 21.91lb 116ft/s 1,711ft/s 37.4G 14,795ft 24.4s 20s
OK Cesaroni M1300 21.97lb 92ft/s 1,596ft/s 28.5G 14,882ft 24.7s 20s
OK Cesaroni M1540 22.52lb 88ft/s 1,814ft/s 23.1G 15,180ft 24.7s 20s
OK AeroTech M1315 21.94lb 79ft/s 1,677ft/s 17.5G 15,190ft 25.1s 19s
OK AeroTech M650 20.80lb 71ft/s 1,268ft/s 13.4G 15,531ft 27.0s 16s
OK Cesaroni M2045 22.88lb 91ft/s 2,026ft/s 25.1G 15,683ft 24.7s 21s
OK Cesaroni M2150 23.44lb 90ft/s 2,066ft/s 25.6G 15,779ft 24.8s 21s
OK Cesaroni M1590 22.90lb 88ft/s 1,881ft/s 21.9G 16,397ft 25.4s 21s
OK Cesaroni M2020 25.00lb 94ft/s 2,062ft/s 23.5G 16,924ft 25.5s 21s
OK Cesaroni M840 24.83lb 75ft/s 1,432ft/s 16.8G 17,440ft 28.3s 19s

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 Gorilla L695 speed at end of launch guide too slow (44ft/s)
failedG Loki L480 speed at end of launch guide too slow (42ft/s)
failedG Contrail L369 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni L395 speed at end of launch guide too slow (43ft/s)

G These simulations were run with a launch guide length of 6ft (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: 54.80.146.251
Protocol: HTTP/1.0
URI: /motorguide.jsp
Method: GET
Query: rocket=4578

java.io.FileNotFoundException: /home/orgthrus/public_html/guide/SUWCJOE/MAC_Performance_Radial_Flyer_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: 54.80.146.251
Protocol: HTTP/1.0
URI: /motorguide.jsp
Method: GET
Query: rocket=4578

java.io.FileNotFoundException: /home/orgthrus/public_html/guide/SUWCJOE/MAC_Performance_Radial_Flyer_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: 54.80.146.251
Protocol: HTTP/1.0
URI: /motorguide.jsp
Method: GET
Query: rocket=4578

java.io.FileNotFoundException: /home/orgthrus/public_html/guide/SUWCJOE/MAC_Performance_Radial_Flyer_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: 54.80.146.251
Protocol: HTTP/1.0
URI: /motorguide.jsp
Method: GET
Query: rocket=4578

java.io.FileNotFoundException: /home/orgthrus/public_html/guide/SUWCJOE/MAC_Performance_Radial_Flyer_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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