Attachment Q GeoXO MEL_09_28_2023_rev1.pdf

Attachment Q

GeoXO Spacecraft Master Equipment List (MEL) Template

September 28, 2023

RFP 80GSFC23R0010

CONTRACT NO: TO BE

DETERMINED

MEL Supplemental Instructions

The flight elements and components entered on each row should be traceable to block diagrams and heritage claims provided in other parts of the proposal. For each major component, current best estimates (CBE) and contingency for mass and power, number of flight units required, and some description of the heritage basis must be provided. Power values should represent nominal steady-state operational power requirements. Information to be provided includes identification of planned spares, identification of engineering models, lifetest unit(s), and prototypes with their fidelities, contingency allocations for individual components, and other component description/characteristics. Certain items should include additional details, sufficient to assess functionality and/or cost, to identify and separate individual elements.

List each electronic board separately, identify the functionality of each board (either in the MEL or in the proposal), and provide the operational speed of the board. If proposing Field- Programmable Gate Arrays (FPGAs) or Application Specific Integrated Circuits (ASICs), or Radio Frequency Integrated Circuits (RFICs), list the design size (in the appropriate sizing parameter such as number of logic cells or logic elements), the board that will include the chip(s), and how what amount of heritage will be used in the design.

MEL Supplemental Instructions:

Provide the following data for Software elements: (1) the number of logical lines of code by Computer Software Configuration Item (CSCI); (2) description of the functionality for each CSCI;

(3) code counts categorized as either New, Modified, Full Reuse, or Auto-generated; (4) development method (spiral, waterfall, agile, etc.), and (5) development language

Instructions for software (can be included under the heading for HERITAGE JUSTIFICATION and ADDITIONAL INFORMATION)

For Column V - Composition:

Structure Example: composite facesheets, Aluminum honeycomb core (21 mm thick) Electronics Examples:

- Mechanism controller board, 1 FPGA RTG4, usage 500K System gates (25% of 2M system gates), operating at 250MHz clock

- Main Electronics box Data processor board, 32-bit SPACRC CPU, 2 RT ProASIC3 FPGAs, each with usage of 1 M system gates (33% of 3M system gates), CPU operating at 25MHz & FPGAs operating at 175MHz1 FPGA RTG4

- 1 SRAM 16 Mbit, 1 EEPROM 128kx8, 3 ADC 12 bit, 2 DAC 12 bit

For Columns P to T: These Power Columns are recommended but not required in the MEL for proposals. Delete these columns if not used

Please note - Two MELs are shown in this attachment. The GeoI MEL shows the overall format and the GeoS MEL is expanded to show the formulas that make up the MEL.

MEL Supplemental Instructions

Columns Y to AF

NT = New Technology F EC = Engineering Change P I = Identical to past flight(s) N

N/A o NT: New Technology, never flown before.

o EC: Change in engineering approach/design, workmanship, manufacturing processes unless these employ radically new technology that has never been used before. Proven technology in a new size or configuration, unless that new configuration is such a substantial deviation from what has been previously qualified/validated/tested/proven that it materially affects the performance limits of the technology.

o Identical: It's neither of the above. This element has flown before, and full heritage is leveraged.

= No Heritage = Not Applicable

Similarity to Existing Hardware:

Is it a New Technology or Engineering Change?

Spreadsheet codes for Columns Y through AF Heritage Summary OptionsSimilarity to Existing Hardware

= Full Heritage = Partial Heritage

Columns Y to AF