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Chapter 6
6.1 Define FMEA.
6.2 What is systems engineering?
6.3 What is a system?
6.4 The many pieces and components of a system are called what?
6.5 What is a KDP?
6.6 What are the phases of a project life cycle according to the NASA systems
engineering process?
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6.7 Define SEP.
6.8 What is the PDR?
6.9 What is the CDR?
6.10 Define the V model.
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6.11 What is the SE engine?
6.12 Define TRL.
6.13 If a rocket engine has been tested in the laboratory only and not in an environment
chamber at what TRL is it likely to be?
6.14 A concept that is only been developed as far as the laboratory whiteboard would
be at what TRL level?
6.15 What is the TRL of the Space Shuttle?
6.16 Define IRL.
6.17 What IRL is the Delta IV rocket?
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6.18 Define SRL.
6.19 What is the “pathway to success”?
6.20 A rocket system has an average TRL of 6 and an IRL of 2. Calculate the SRL.
6.21 Is the rocket system in Exercise 6.20 on the pathway to success? Should
components or systems be focused on to fix this?
6.22 What is the SRL of the Atlas V rocket?
6.23 What is a thrustometer?
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6.24 What is a test stand?
6.25 A rocket engine on a spring scale deflects the spring by 1 cm. If the spring
constant is 0.1 N/m and the m-dot of the rocket is 1 mg/s what is the equivalent
velocity?
6.26 Develop a computer model for the deflection bar thrustometer and study how
variations in the bar geometry and modulus of elasticity change the level of thrust
that can be measured.
6.27 The pressure gauge on a hydraulic load cell thrustometer measures 10 MPa. The
diameter of the thrust point is 0.25 m. Calculate the thrust measured by the
device.
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6.28 Develop a computer model for the strain gauge load cell thrustometer and study
how variations of the load cell geometry (assume a C-type) changes the thrust
levels that can be measured.
6.29 What are pressure vessels?
6.30 Why is logistics important in flight test programs?
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