Multifunctional Information Distribution System (MIDS) Link-16

1. Multifunctional Information Distribution System (MIDS) Link-16 Project Presentation for Integration of MIDS Link-16 onto an advanced F-16 Aircraft • EMIS 7305 Spring 2011 Dr. JerrellStracener B. Hanson, C. Kalina, A. Rodriguez

2. MIDS is an advanced information distribution system • Integrates communication, navigation and identification capabilities • Applications include airborne, land-based, and maritime tactical operations • The system is in essence a high speed, anti-jam data link between allied aircraft that allows transmission of multiple types of messages which are critical for mission success. • Among other important features, these messages provide a visual on target, hostile, enemy, and allied aircraft and also the location of such which is displayed in each aircraft on a Multifunction Display (MFD). System Overview

3. Two main components will be taken into consideration for purposes of this project: • MIDS Main Terminal Line Replaceable Unit (LRU) • Power Supply (RPS) System Overview

4. The system consists of two real and one “virtual” component. • Remote Power Supply (RPS) • Main MIDS LRU • Back-up MIDS LRU, or the “virtual” MIDS LRU • The virtual LRU is simply the case where the RPS fails; in which case the LRU would be powered from the aircraft’s 28V DC. • The LRU in this scenario would have a reduced Mean Time Between Failure (MTBF) than the LRU which operates from RPS. System Overview

5. Our study of integrating the Link-16 MIDS onto an Advanced F-16 Aircraft consisted of: • Analyzing: • Reliability • Maintainability • Determining System’s Operational Effectiveness • Defining requirements for: • Mean Time Between Failures (MTBF) • Reliability • Maintainability • Analysis was conducted in order to determine whether or not the MIDS meets the customers’ requirements.

6. Three separate companies competed to win the contract to supply the MIDS LRU and RPS. • Armando Incorporated • Brody Incorporated • Chris Incorporated • Each company submitted data from the testing of 100 units of the LRU and RPS. • The data contained the MTTF and MTTR of each component. • Separate companies could be chosen to supply the RPS and LRU. • This gave more freedom in determining which combination would give the optimal MTTF and MTTR. Competition

7. Per the customer requirements, the Link-16 MIDS shall be designed to have a Mean Time Between Failure of equal to or greater than 1000 hours. • The MTBF, or MTTR, defines the inherent reliability of the system, and the system shall be operated in normal expected flight conditions. Requirements

8. A failure shall be defined as any of the following conditions: • Any measurable and unscheduled loss of, or degradation in, the Terminal’s performance. • Any failure that causes self-correcting or operator-resettable interruptions of the Terminal’s specified performance to occur more often than once per six hours. • Any nonscheduled repair, adjustment, or related action taken to verify the existence of a failure, whether or not one can be verified, or taken to correct anout-of-specification condition if this action interrupts Terminal performance. Requirements

9. The MIDS LRU and RPS can be defined to be in a standby configuration. Two LRUs are depicted below, with the second LRU being considered a “Virtual” LRU. If the RPS goes down, the MIDS LRU will run off the 28V DC power. The MTTF is significantly less than when the LRU is not running off the RPS. 3 Phase AC Aircraft Power RPS LRU1 28 V DC LRU2 Reliability

10. The system is in a Standby Configuration overall with the RPS and main LRU in series with one another. • For a system in series with one another the MTBF is given by the following equation: • A system in a Standby Configuration has a higher reliability due to its redundancies. The MTBF of the system is the individual sums of each element in the system. • Based on the block diagram in Figure 2 the MTBF of the overall system is given by: Reliability

11. Each vendor’s data was used to find the MTBF and MTTR of each element. The MTBF and MTTR were found by finding the mean of each element using: Reliability

12. Table summarizes the results of finding the MTBF of the system per the companies data. Reliability Results - Table 1

13. Reliability Results - Table 2

14. Reliability Results - Table 2 Continued

15. The MIDS shall accommodate the following level of maintenance by specified maintenance personnel: • Direct-support maintenance (platform level) • Intermediate-support maintenance: • Indirect-support maintenance Maintainability

16. The MIDS LRU Main Terminal and associated Remote Power Supply will be maintained on-platform/on-site by maintenance technicians. • Failed LRUs will be detected and verified by built-in test (BIT) circuitry, replaced, and the repair will be verified by BIT. • Direct-support maintenance (platform level) Maintainability:

17. Intermediate-level repair will consist of, verifying LRU faults; isolating LRU failures using Built-in-Test (BIT), technical manuals and with commercial off the shelf (COTS) test equipment or Government inventory support equipment with Link 16 functionality and unique interface hardware and software; repairing the LRU; and verifying the repair using BIT, technical manuals and with COTS equipment or Government inventory support equipment with Link 16 functionality and unique interface hardware and software. Intermediate-level repair will be performed off-platform by maintenance personnel. • Intermediate-support maintenance Maintainability:

18. Indirect-support (depot) maintenance will consist of repairing the LRUs beyond the capability of the intermediate-level repair facility. • Indirect-support maintenance: Maintainability:

19. Analysis: • In order to determine if selected vendors meet the requirements for Maintainability, we first must perform a thorough analysis of Mean Time to Repair (MTTR) and Mean Time to Failures (MTTF) for each vendor under consideration. • The equation to find the MTTR of the system is: Maintainability:

20. Maintainability: Note: Table 3 continues in next slide

21. Maintainability:

22. In summary, the following suppliers will be used in order to meet the requirements of our customer: • RPS: Brody Incorporated • MIDS LRU: Chris Incorporated • After careful analysis, all vendors provided components that achieved the requirement for the system to have a MTBF of at least 1000 hours. • Reliability is considered the number one priority for our system and the companies chosen are based reliability. • Brody Incorporated will be chosen for the Remote Power Supply (RPS) and Chris Incorporated will be chosen for the MIDS Line Replaceable Unit (LRU) based on the MTBF of 1171.9 hours. Results

23. Maintainability is an important characteristic of a system, but it was considered second to reliability. • The maintainability requirement of no more than 30 hours has not fully been achieved based off the LRU and RPS chosen. • The MTTR of the chosen components came out to be 30.4 hours, just above the requirement of no more than 30 hours. • It is considered acceptable because of the higher reliability to the system. • The next closest MTBF, within the MTTR requirement, came from Brody’s RPS and Armando’s LRU. • The MTBF difference is 26 hours and the MTTR difference is 7 hours. Overall, it is better to go with Brody’s RPS and Chris’s LRU to maximize the reliability of the system.   Results

24. All other requirements within maintainability and reliability are achieved with the chosen components. • Barring any unforeseen circumstances, these components will be chosen to be placed on the Advanced F-16 Aircraft. Results