RocketMotorTwo Hot-Fire Test Summaries
Many subscale hot-firings were performed at Scaled Composites, LLC between Jun 05 and April 09 to evaluate several different fuels, igniters, injectors, insulators and nozzle configurations, as well as other components and parameters.
Based on the results of those subscale firings, the Scaled/SNC team chose a full-scale rocket motor system design and began testing in April 2009.
The following list includes summaries of the hot-fire activity of the RocketMotorTwo rockets.
Fire: 08
Date: 29 November 11
Objectives:
Perform eighth full scale flight design RM2 hot-fire
All systems evaluation
Modified pressurization schedule
Fuel formulation evaluation
Nozzle evaluation
Motor structural evaluation
Valve/injector performance evaluation
Results:
All objectives completed. Performed 10 second and then 58 second hot fires.
Fire: 07
Date: 25 August 11
Objectives:
Perform seventh full scale flight design RM2 hot-fire
Continue all systems evaluation
Continue fuel formulation evaluation
Continue nozzle evaluation
Continue motor structural evaluation
Continue valve/injector performance evaluation
Results:
All objectives completed. Performed 55 second, full duration hot-fire, including igniter performance, oxidizer flow and pressurization systems, data acquisition system measurements, structural evaluation, nozzle ablation, and fuel regression rate data collection.
Fire: 06
Date: 24 March 11
Objectives:
Perform sixth full scale flight design RM2 hot-fire
Continue all systems evaluation
Continue fuel formulation evaluation
Continue nozzle evaluation
Continue motor structural evaluation
Continue valve/injector performance evaluation
Results:
All objectives completed. Performed increased duration hot-fire, including igniter performance, oxidizer flow and pressurization systems, data acquisition system measurements, structural evaluation, nozzle ablation, and fuel regression rate data collection. Determined stability levels.
Fire: 05
Date: 11 August 10
Objectives:
Perform fifth full scale flight design RM2 hot-fire
Continue all systems evaluation
Continue fuel formulation evaluation
Continue nozzle evaluation
Continue motor structural evaluation
Continue valve/injector performance evaluation
Results:
All objectives completed. Performed successful increased duration hot-fire, including igniter performance, oxidizer flow and pressurization systems, data acquisition system measurements, structural evaluation, nozzle ablation, and fuel regression rate data collection. Determined stability levels.
Fire: 04
Date: 30 March 10
Objectives:
Perform fourth full scale flight design RM2 hot-fire – planned flight fuel
Performed flight design Rocket System evaluation
Pressurization system evaluation
Data Acquisition system evaluation
Fuel formulation evaluation
Nozzle evaluation
CTN structural evaluation
Valve/injector evaluation
Results:
All objectives completed. Performed successful hot-fire, including oxidizer flow and pressurization systems, data acquisition system measurements, structural evaluation, nozzle ablation, and fuel regression rate data collection. Determined stability levels.
Fire: 03
Date: 20 May 09
Objectives:
Perform third full scale RM2 hot-fire with first generation design - same fuel as HF02
Continued Rocket system evaluation
Igniter evaluation
Data Acquisition system evaluation
Fuel formulation evaluation
Nozzle evaluation
CTN structural evaluation
Results:
All objectives completed. Performed successful hot-fire, including oxidizer flow and pressurization systems, data acquisition system, igniter performance measurements, structural evaluation, nozzle ablation, and fuel regression rate data collection. Determined stability levels.
Fire: 02
Date: 06 May 09
Objectives:
Perform second full scale RM2 hot-fire with first generation design - different fuel
Continued Rocket system evaluation
Igniter evaluation
Data Acquisition system evaluation
Fuel formulation evaluation
Nozzle evaluation
CTN structural evaluation
Results:
All objectives completed. Performed successful hot-fire, including oxidizer flow and pressurization systems, data acquisition system, igniter performance measurements, structural evaluation, nozzle ablation, and fuel regression rate data collection. Determined stability levels. Preliminary fuel performance in line with predictions.
Fire: 01
Date: 20 April 09
Objectives:
Perform first full scale RM2 hot-fire with first generation design
Test stand evaluation
Rocket system evaluation
Igniter evaluation
Data Acquisition system evaluation
Fuel formulation evaluation
Nozzle evaluation
CTN structural evaluation
Results:
All objectives completed. Performed successful hot-fire, including oxidizer flow and pressurization systems, data acquisition system, igniter performance measurements, structural evaluation, nozzle ablation, and fuel regression rate data collection.
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Based on the results of those subscale firings, the Scaled/SNC team chose a full-scale rocket motor system design and began testing in April 2009.
The following list includes summaries of the hot-fire activity of the RocketMotorTwo rockets.
Fire: 08
Date: 29 November 11
Objectives:
Perform eighth full scale flight design RM2 hot-fire
All systems evaluation
Modified pressurization schedule
Fuel formulation evaluation
Nozzle evaluation
Motor structural evaluation
Valve/injector performance evaluation
Results:
All objectives completed. Performed 10 second and then 58 second hot fires.
Fire: 07
Date: 25 August 11
Objectives:
Perform seventh full scale flight design RM2 hot-fire
Continue all systems evaluation
Continue fuel formulation evaluation
Continue nozzle evaluation
Continue motor structural evaluation
Continue valve/injector performance evaluation
Results:
All objectives completed. Performed 55 second, full duration hot-fire, including igniter performance, oxidizer flow and pressurization systems, data acquisition system measurements, structural evaluation, nozzle ablation, and fuel regression rate data collection.
Fire: 06
Date: 24 March 11
Objectives:
Perform sixth full scale flight design RM2 hot-fire
Continue all systems evaluation
Continue fuel formulation evaluation
Continue nozzle evaluation
Continue motor structural evaluation
Continue valve/injector performance evaluation
Results:
All objectives completed. Performed increased duration hot-fire, including igniter performance, oxidizer flow and pressurization systems, data acquisition system measurements, structural evaluation, nozzle ablation, and fuel regression rate data collection. Determined stability levels.
Fire: 05
Date: 11 August 10
Objectives:
Perform fifth full scale flight design RM2 hot-fire
Continue all systems evaluation
Continue fuel formulation evaluation
Continue nozzle evaluation
Continue motor structural evaluation
Continue valve/injector performance evaluation
Results:
All objectives completed. Performed successful increased duration hot-fire, including igniter performance, oxidizer flow and pressurization systems, data acquisition system measurements, structural evaluation, nozzle ablation, and fuel regression rate data collection. Determined stability levels.
Fire: 04
Date: 30 March 10
Objectives:
Perform fourth full scale flight design RM2 hot-fire – planned flight fuel
Performed flight design Rocket System evaluation
Pressurization system evaluation
Data Acquisition system evaluation
Fuel formulation evaluation
Nozzle evaluation
CTN structural evaluation
Valve/injector evaluation
Results:
All objectives completed. Performed successful hot-fire, including oxidizer flow and pressurization systems, data acquisition system measurements, structural evaluation, nozzle ablation, and fuel regression rate data collection. Determined stability levels.
Fire: 03
Date: 20 May 09
Objectives:
Perform third full scale RM2 hot-fire with first generation design - same fuel as HF02
Continued Rocket system evaluation
Igniter evaluation
Data Acquisition system evaluation
Fuel formulation evaluation
Nozzle evaluation
CTN structural evaluation
Results:
All objectives completed. Performed successful hot-fire, including oxidizer flow and pressurization systems, data acquisition system, igniter performance measurements, structural evaluation, nozzle ablation, and fuel regression rate data collection. Determined stability levels.
Fire: 02
Date: 06 May 09
Objectives:
Perform second full scale RM2 hot-fire with first generation design - different fuel
Continued Rocket system evaluation
Igniter evaluation
Data Acquisition system evaluation
Fuel formulation evaluation
Nozzle evaluation
CTN structural evaluation
Results:
All objectives completed. Performed successful hot-fire, including oxidizer flow and pressurization systems, data acquisition system, igniter performance measurements, structural evaluation, nozzle ablation, and fuel regression rate data collection. Determined stability levels. Preliminary fuel performance in line with predictions.
Fire: 01
Date: 20 April 09
Objectives:
Perform first full scale RM2 hot-fire with first generation design
Test stand evaluation
Rocket system evaluation
Igniter evaluation
Data Acquisition system evaluation
Fuel formulation evaluation
Nozzle evaluation
CTN structural evaluation
Results:
All objectives completed. Performed successful hot-fire, including oxidizer flow and pressurization systems, data acquisition system, igniter performance measurements, structural evaluation, nozzle ablation, and fuel regression rate data collection.
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Founded in 1982 by Burt Rutan, Scaled has broad experience in air vehicle design, tooling and manufacturing, specialty composite structure design, analysis and fabrication, and developmental flight tests of air and space vehicles.
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