About the Program at Lockheed Martin

My project was part of the program called Mobile User Objective System (MUOS), where the US Navy awarded the company to make 5 satellites

First satellite: Atlas V MUOS-1 Launch 2/24/2012 Photo Credit: United Launch Alliance

The satellite has 2 (blue) solar panels, and 2 unfurlable (yellow) mesh reflectors (i.e., folded during launch then opened up like umbrellas in space)

The satellites: Next-generation narrowband tactical satellite communications system, designed to significantly improve ground communications for U.S. forces on the move 10 times more communications capability over existing systems Communication is in 3 forms: voice, video and data Devices may be stations, computers, or cell-phone-like devices Satellites developed at the Commercial Space Systems unit in Newtown, PA, and assembled & tested in Sunnyvale

About my project: Project Planning

This is the original project timeline for the initial 4 satellites, for the time period of fiscal years

Why project planning? Project planning is very important on every job, large or small The timeline on the previous slide is the top level of a very complicated project, for the period of 7 years Each group, in turn, has its own project plan – all the way down to the smallest project We are going to do our own project planning … but first we are going to review matrix multiplication, which will be used in the planning

Review: Matrix multiplication

Review of matrix multiplication : C ij comes from red row i and blue column j

Applications of Matrix multiplication

An example: Two softball teams submit equipment lists to their sponsors: Women's TeamMen's Team Bats1215 Balls4538 Gloves1517 Each bat costs $48; ball, $4; glove, $42. Find the total cost for each team.

x4538=(48)(12)+(4)(45)+(42)(15)(48)(15)+(4)(38)+(42)(17) 1517 =$1,386$1,586 The cost for each team is the result of matrix multiplication of the unit costs (red matrix) and counts of items (blue matrix):

Practice problem 1

Answer to Practice problem 1 BA = [$1, $1, $981.25] The entries in the result matrix (BA) represent the profit for both crops at each of the 3 outlets.

Practice problem 2

Answer to Practice problem 2 BA = [$497,500 $494,500] The entries in the result matrix (BA) represent the costs of the 3 models of the product at the 2 warehouses.

Project Description Detailed info is in 1 st half of page of student handout

Using Excel Same info is in 2 nd half of page of student handout

Expressing a value vs. a formula (also in student handout) DO …… HOW Express a numberType the number. Express formula (to calculate) … always start with the equal sign Type “=” then the formula, where the syntax is like graphing calculator, but stricter and without special symbols/buttons.  “*” for multiplication, which must always be expressed  “/” for dividing Express another cell’s value (in a formula) Type “B6” for value of cell B6, or click in cell B6, while typing the formula

Practice with Excel 1. Name the cell in the 2 nd row, 4 th column 2. Assign value 4 to cell in 3 rd row, 2 nd column 3. Add 5 to the value in cell B3, and have result in cell D6 4. Multiply the value in cell D6 by 2, and have result in cell D7

Answers 1. It is cell D2, where D stands for 4 th column (see column header) and 2 stands for 2 nd row (see row header). Note :In a cell name, the column is cited before the row – unlike an entry in a matrix, where the row is cited before the column. 2. Click in cell B3, type 4 3. Click in cell D6, type =B3+5, which give 9. Note : Instead of typing B3 in the formula, one can simply click in cell B3 (after typing the equal sign). 4. Click in cell D7, type =D6*2, which give 18