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Course Overview/Systems Engineering - Dave Akin's Web Site

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<strong>Course</strong> <strong>Overview</strong>/<strong>Systems</strong> <strong>Engineering</strong><br />

¥ <strong>Course</strong> <strong>Overview</strong><br />

Ð Syllabus<br />

Ð Policies<br />

Ð <strong>Web</strong>-based Content<br />

Ð Project Content<br />

¥ Tools of <strong>Systems</strong> <strong>Engineering</strong><br />

Ð History<br />

Ð Project Organization<br />

Ð Task-based Management<br />

<strong>Course</strong> <strong>Overview</strong> and <strong>Systems</strong> <strong>Engineering</strong><br />

Principles of Space <strong>Systems</strong> Design


Contact Information<br />

Dr. <strong>Dave</strong> Akin<br />

Space <strong>Systems</strong> Laboratory<br />

Neutral Buoyancy Research Facility/Room 2100D<br />

301-405-1138<br />

dakin@ssl.umd.edu<br />

http://spacecraft.ssl.umd.edu<br />

<strong>Course</strong> <strong>Overview</strong> and <strong>Systems</strong> <strong>Engineering</strong><br />

Principles of Space <strong>Systems</strong> Design


Syllabus <strong>Overview</strong><br />

¥ Basic Tools and Techniques of Spacecraft<br />

Design<br />

¥ Level 1 Design: <strong>Systems</strong> Estimation<br />

¥ Level 2 Design: Vehicle Estimation<br />

¥ Level 3 Design: Component Detailed Design<br />

<strong>Course</strong> <strong>Overview</strong> and <strong>Systems</strong> <strong>Engineering</strong><br />

Principles of Space <strong>Systems</strong> Design


Policies<br />

¥ Grade Distribution<br />

Ð 30% Problems<br />

Ð 20% Midterm Exam<br />

Ð 20% Term Project<br />

Ð 30% Final Exam<br />

¥ Late Policy<br />

Ð On time: Full credit<br />

Ð Before solutions: 70% credit<br />

Ð After solutions: 20% credit<br />

<strong>Course</strong> <strong>Overview</strong> and <strong>Systems</strong> <strong>Engineering</strong><br />

Principles of Space <strong>Systems</strong> Design


<strong>Web</strong>-based <strong>Course</strong> Content<br />

¥ Data web site at spacecraft.ssl.umd.edu<br />

Ð <strong>Course</strong> information<br />

Ð Syllabus<br />

Ð Lecture notes<br />

Ð Problems and solutions<br />

¥ Interactive web site at www.ajconline.umd.edu<br />

Ð Team communications for term project<br />

Ð Surveys for course feedback<br />

Ð Electronic quizzes(?)<br />

<strong>Course</strong> <strong>Overview</strong> and <strong>Systems</strong> <strong>Engineering</strong><br />

Principles of Space <strong>Systems</strong> Design


Goals of ENAE 483/484<br />

¥ Learn the basic tools and techniques of systems<br />

analysis and space vehicle design<br />

¥ Understand the open-ended and iterative nature<br />

of the design process<br />

¥ Simulate the cooperative group engineering<br />

environment of the aerospace profession<br />

¥ Develop experience and skill sets for working in<br />

teams<br />

¥ Perform and document professional-quality<br />

systems design of a focused space mission concept<br />

<strong>Course</strong> <strong>Overview</strong> and <strong>Systems</strong> <strong>Engineering</strong><br />

Principles of Space <strong>Systems</strong> Design


Projects for ENAE 483 - Fall 2000<br />

¥ Project Diana<br />

Ð Minimum cost and time system for resuming human<br />

lunar exploration<br />

Ð ÒPathfinderÓ project to illustrate techniques and<br />

applications this term<br />

Ð Single-person project (me!)<br />

¥ Project High-Flight<br />

Ð Design a system for transporting humans between low<br />

earth orbit (LEO) and geostationary orbit (GEO)<br />

Ð Fall term<br />

Ð Teams of 5 people (you)<br />

<strong>Course</strong> <strong>Overview</strong> and <strong>Systems</strong> <strong>Engineering</strong><br />

Principles of Space <strong>Systems</strong> Design


Project for ENAE 484 - Spring 2001<br />

Clarke Station<br />

¥ Learn to live and work in deep space as<br />

precursor to Mars exploration<br />

¥ Human habitat at the Earth-Moon L1 point<br />

¥ Capable of generating artificial gravity<br />

¥ Base station for extended lunar exploration and<br />

exploitation<br />

¥ Includes the design of support vehicles for<br />

transportation to/from LEO<br />

<strong>Course</strong> <strong>Overview</strong> and <strong>Systems</strong> <strong>Engineering</strong><br />

Principles of Space <strong>Systems</strong> Design


AkinÕs Laws of Spacecraft Design - #3<br />

Design is an iterative process. The<br />

necessary number of iterations is one<br />

more than the number you have<br />

currently done. This is true at any<br />

point in time.<br />

<strong>Course</strong> <strong>Overview</strong> and <strong>Systems</strong> <strong>Engineering</strong><br />

Principles of Space <strong>Systems</strong> Design


<strong>Overview</strong> of <strong>Systems</strong> <strong>Engineering</strong><br />

¥ Developed to handle large, complex systems<br />

Ð Geographically disparate<br />

Ð Cutting-edge technologies<br />

Ð Significant time/cost constraints<br />

Ð Failure-critical<br />

¥ First wide-spread applications in aerospace<br />

programs of the 1950Õs (e.g., ICBMs)<br />

¥ Rigorous, systematic approach to organization<br />

and record-keeping<br />

<strong>Course</strong> <strong>Overview</strong> and <strong>Systems</strong> <strong>Engineering</strong><br />

Principles of Space <strong>Systems</strong> Design


The Space System Development Process<br />

Pre-Phase A<br />

Conceptual Design Phase<br />

¥ Development of performance<br />

goals and requirements<br />

¥ Establishment of Science<br />

Working Group (science missions)<br />

¥ Trade studies of mission<br />

concepts<br />

¥ Feasibility and preliminary cost<br />

analyses<br />

¥ Request for Phase A proposals<br />

<strong>Course</strong> <strong>Overview</strong> and <strong>Systems</strong> <strong>Engineering</strong><br />

Principles of Space <strong>Systems</strong> Design


The Space System Development Process<br />

Pre-Phase A<br />

Phase A<br />

Preliminary Analysis Phase<br />

¥ Proof of concept analyses<br />

¥ Mission operations concepts<br />

¥ ÒBuild vs. buyÓ decisions<br />

¥ Payload definition<br />

¥ Selection of experimenters<br />

¥ Detailed trajectory analysis<br />

¥ Target program schedule<br />

¥ RFP for Phase B studies<br />

<strong>Course</strong> <strong>Overview</strong> and <strong>Systems</strong> <strong>Engineering</strong><br />

Principles of Space <strong>Systems</strong> Design


The Space System Development Process<br />

Pre-Phase A<br />

Phase A<br />

Phase B<br />

Definition Phase<br />

¥ Define baseline technical<br />

solutions<br />

¥ Create requirements document<br />

¥ Significant reviews:<br />

Ð <strong>Systems</strong> Requirements Review<br />

Ð <strong>Systems</strong> Design Review<br />

Ð Non-Advocate Review<br />

¥ Request for Phase C/D proposals<br />

<strong>Course</strong> <strong>Overview</strong> and <strong>Systems</strong> <strong>Engineering</strong><br />

Principles of Space <strong>Systems</strong> Design


The Space System Development Process<br />

Pre-Phase A<br />

Phase A<br />

Phase B<br />

Phase C/D<br />

Definition Phase<br />

¥ Detailed design process<br />

¥ ÒCutting metalÓ<br />

¥ Test and analysis<br />

¥ Significant reviews:<br />

Ð Preliminary Design Review (PDR)<br />

Ð Critical Design Review (CDR)<br />

Ð Test Acceptance Review<br />

Ð Flight Readiness Review<br />

¥ Ends at launch of vehicle<br />

<strong>Course</strong> <strong>Overview</strong> and <strong>Systems</strong> <strong>Engineering</strong><br />

Principles of Space <strong>Systems</strong> Design


The Space System Development Process<br />

Pre-Phase A<br />

Phase A<br />

Phase B<br />

Phase C/D<br />

Phase E/F<br />

Operations and End-of-Life<br />

¥ Launch<br />

¥ Check-out<br />

¥ Mission Operations<br />

¥ Maintenance and Troubleshooting<br />

¥ Failure monitoring<br />

¥ End-of-life disposal<br />

<strong>Course</strong> <strong>Overview</strong> and <strong>Systems</strong> <strong>Engineering</strong><br />

Principles of Space <strong>Systems</strong> Design


Work Breakdown Structures<br />

¥ Detailed ÒoutlineÓ of all tasks required to<br />

develop and operate the system<br />

¥ Successively finer levels of detail<br />

Ð Program (e.g., Space Transportation System)<br />

Ð Project (Space Shuttle Project)<br />

Ð Mission (Earth-LEO Transportation)<br />

Ð System (Shuttle Orbiter)<br />

Ð Subsystem (Main Propulsion)<br />

Ð Assembly (High Pressure LOX Turbopumps)<br />

Ð Subassembly, Component, Part, ...<br />

<strong>Course</strong> <strong>Overview</strong> and <strong>Systems</strong> <strong>Engineering</strong><br />

Principles of Space <strong>Systems</strong> Design


Requirements Document<br />

¥ The ÒbibleÓ of the design and development<br />

process<br />

¥ Lists (clearly, unambiguously, numerically) what<br />

is required to successfully complete the program<br />

¥ Follows the WBS in successive levels of detail<br />

¥ May be subject to change as state of knowledge<br />

grows<br />

¥ Critical tool for maintaining program budgets<br />

<strong>Course</strong> <strong>Overview</strong> and <strong>Systems</strong> <strong>Engineering</strong><br />

Principles of Space <strong>Systems</strong> Design


AkinÕs Laws of Spacecraft Design - #13<br />

Design is based on requirements. There's no<br />

justification for designing something one bit<br />

"better" than the requirements dictate.<br />

<strong>Course</strong> <strong>Overview</strong> and <strong>Systems</strong> <strong>Engineering</strong><br />

Principles of Space <strong>Systems</strong> Design


PERT Charts<br />

A<br />

1d 0d<br />

Thu 8/31/00 Thu 8/31/00<br />

B<br />

3d 3d<br />

Fri 9/1/00 Tue 9/5/00<br />

C<br />

4d 0d<br />

Fri 9/1/00 Wed 9/6/00<br />

<strong>Course</strong> <strong>Overview</strong> and <strong>Systems</strong> <strong>Engineering</strong><br />

Principles of Space <strong>Systems</strong> Design


The Critical Path and Slack Time<br />

A<br />

1d 0d<br />

Thu 8/31/00 Thu 8/31/00<br />

A<br />

1d 0d<br />

Thu 8/31/00 Thu 8/31/00<br />

B<br />

3d 1d<br />

Fri 9/1/00 Tue 9/5/00<br />

C<br />

4d 0d<br />

Fri 9/1/00 Wed 9/6/00<br />

B<br />

3d 3d<br />

Fri 9/1/00 Tue 9/5/00<br />

C<br />

4d 0d<br />

Fri 9/1/00 Wed 9/6/00<br />

D<br />

3d 1d<br />

Wed 9/6/00 Fri 9/8/00<br />

E<br />

5d 0d<br />

Thu 9/7/00 Wed 9/13/00<br />

D<br />

3d 3d<br />

Wed 9/6/00 Fri 9/8/00<br />

E<br />

5d 0d<br />

Thu 9/7/00 Wed 9/13/00<br />

F<br />

6d 1d<br />

Mon 9/11/00 Mon 9/18/00<br />

G<br />

4d 0d<br />

Thu 9/14/00 Tue 9/19/00<br />

F<br />

6d 0d<br />

Thu 9/14/00 Thu 9/21/00<br />

G<br />

4d 2d<br />

Thu 9/14/00 Tue 9/19/00<br />

<strong>Course</strong> <strong>Overview</strong> and <strong>Systems</strong> <strong>Engineering</strong><br />

Principles of Space <strong>Systems</strong> Design<br />

H<br />

1d 0d<br />

Wed 9/20/00 Wed 9/20/00<br />

H<br />

1d 0d<br />

Fri 9/22/00 Fri 9/22/00


GANTT Charts<br />

Aug 20, '00 Aug 27, '00 Sep 3, '00 Sep 10, '00 Sep 17, '00<br />

I D Task Name Duration Start Finish M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S<br />

1 A 1d Thu 8/31/00 Thu 8/31/00<br />

2 B 3d Fri 9/1/00 Tue 9/5/00<br />

3 C 4d Fri 9/1/00 Wed 9/6/00<br />

4 D 3d Wed 9/6/00 Fri 9/8/00<br />

5 E 5d Thu 9/7/00 Wed 9/13/00<br />

6 F 6d Thu 9/14/00 Thu 9/21/00<br />

7 G 4d Thu 9/14/00 Tue 9/19/00<br />

8 H 1d Fri 9/22/00 Fri 9/22/00<br />

9<br />

<strong>Course</strong> <strong>Overview</strong> and <strong>Systems</strong> <strong>Engineering</strong><br />

Principles of Space <strong>Systems</strong> Design


AkinÕs Laws of Spacecraft Design - #1<br />

<strong>Engineering</strong> is done with numbers.<br />

Analysis without numbers is only<br />

an opinion.<br />

<strong>Course</strong> <strong>Overview</strong> and <strong>Systems</strong> <strong>Engineering</strong><br />

Principles of Space <strong>Systems</strong> Design

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