PWS_for_STRESS.pdf

PERFORMANCE WORK STATEMENT

For the:

T-38 Stress Reports Update

Phase VIII: T-38 Stress Reports Review and Continued Updating

Activities

20 May 2013

Prepared by:

Michael P. Blinn

AFLCMC/WLDEJ

(801) 777-0535 michael.blinn@hill.af.mil

AIR FORCE LIFE CYCLE MANAGEMENT COMPLEX

MATURE AND PROVEN AIRCRAFT DIVISION

ENGINEERING BRANCH

STRUCTURAL INTEGRITY AND ANALYSIS SECTION

HILL AIR FORCE BASE, UTAH 84056

i T38 Stress Reports Update – Phase VIII Last Rev. Date: 20 May 2013

TABLE OF CONTENTS

Page

LIST OF TABLES .......................................................................................................................... ii RECORD OF REVISIONS ........................................................................................................... iii

1.0 DESCRIPTION OF SERVICES

1.1 Scope

2.0 SERVICE SUMMARY

3.0 GOVERNMENT FURNISHED PROPERTY AND SERVICES

3.1 Modification Drawings, Finite Element Models, and Reports Provided

3.2 Security and Access to Government Facilities and Equipment

4.0 GENERAL INFORMATION

4.1 General Requirements

4.2 Technical Objectives and Goals

4.2.1 Multi-Phased Approach

4.3 Specific Requirements

4.3.1 Contractor Services

4.3.1.1 T-38 Stress Reports Update – Phase VII

4.3.1.2 Data Compatibility

4.3.1.3 Data Analysis

4.3.1.4 Data Documentation

4.3.1.5 Formal Evaluations

4.3.1.6 Contractor Travel

4.3.2 Integrated Management Support

4.3.3 Management System Requirements

4.3.4 Reliability Program

4.3.5 Maintainability Program

5.0 APPENDICES AND ATTACHMENTS

5.1 Applicable Documents

5.1.1 Document Availability and Delivery

5.2 Applicable CDRLs

5.2.1 CDRL List

5.2.2 Contractor Reporting

ACRONYMS AND ABBREVIATIONS

ATTACHMENT ONE: LIST OF APPLICABLE DOCUMENTS .......................................... A1-1 ATTACHMENT TWO: APPLICABLE CDRLS ..................................................................... A2-1 ii T38 Stress Reports Update – Phase VIII

LIST OF TABLES

Page

Table 1 – Service Summary (SS) for Phase VIII of the T-38 Stress Reports Update Table 2 – CDRL List for the T-38 Stress Reports Update – Phase VIII .................................. A2-1 iii T38 Stress Reports Update – Phase VIII

RECORD OF REVISIONS

REV DATE PAGE(S)

AFFECTED

SECTION

AFFECTED REASON FOR REVISION

- 16 Apr 13 n/a n/a Original PWS date of release (proposal version)

1 20 May 2013 Multiple Changed date to current date

20 May

8 4.3.2.1 Update paragraph to include man-hour documentation requirements.

20 May

A1-3 Footnote added Included note identifying references are applicable in their entirety

1 T38 Stress Reports Update – Phase VIII

1.0 DESCRIPTION OF SERVICES:

The following Performance Work Statement (PWS) provides a description of the required contractor services in support of the T-38 Aircraft Structural Integrity Program (ASIP), T-38 System Program Office (SPO), Air Education and Training Command (AETC), and other commands.

This contractual effort is limited to Phase VIII of the T-38 Stress Reports Update program and the required engineering efforts are binding towards meeting the Phase VIII requirements.

Additional follow-on efforts are merely mentioned to depict the SPO’s overall program scheme and to ensure current efforts are considered by the contractor to facilitate integration towards required follow-on efforts and options.

It should be noted that Phase VIII, in and of itself, is of value to the overall T-38 Stress Reports Update program for the purpose of continuing the framework of the overall T-38 sustainment efforts, regardless whatever future efforts are accomplished.

1.1 Scope:

This PWS specifies the Phase VIII tasks towards continued evaluation and updating of the T-38 stress reports, as originally published by the Northrop Grumman Corporation (formally Northrop Aircraft, Inc.). As part of the original design, Northrop developed a number of stress reports, providing the rationale, background data (e.g., geometry and material allowables), assumptions, calculations, and margins of safety required for designing key structural components of the T-38 aircraft. For example, Northrop’s NAI 57-55, “T-38 Wing Stress Analysis,” and NAI 57-57, “T- 38 Fuselage Stress Analysis, Vol. I through III,” are the key stress reports that were part of the original aircraft design, but are still referenced today (see Ref. 20 and 21, Attachment One).

However, due to the change in the T-38’s configuration and usage over the past 40-plus years, the validity and applicability of these reports are somewhat suspect, and need to be reviewed for validity and applicability.

In direct support of the stress reports update, and as a logical first step, the Northrop Grumman Corporation is now completing their ninth phase of a contracted effort to develop an integrated fuselage and wing structure finite element model (FEM) of the T-38 aircraft. The main focus of the T-38 FEM program has been to develop an updated (and fully usable) fuselage model, then integrate the fuselage FEM with the newly revised wing FEMs (i.e, for the -29 and -33 wings).

This FEM effort also includes a complete sections property review of the T-38C configuration aircraft, another vital element for a review of the T-38 stress reports. The T-38 FEM is now fully functional – but will always remain a work in progress - and it is intended to be a key stress analysis tool for use in reevaluating the stress reports for the T-38 structure. It should be noted that the aforementioned FEM is most applicable to the T-38C model aircraft, the latest configuration of the T-38 aircraft.

For the requirements as outlined in this PWS, tasking includes the associated program management, engineering, and technical support needed for this program. It should be noted that

2 T38 Stress Reports Update – Phase VIII the complete T-38 stress reports updates will use an assumed multi-phased approach as follows:

Phase I - preliminary T-38 stress reports evaluation and program planning (FY 06); Phase II – T- 38 stress reports review (for validity) and revision (FY 07); Phases III through VII – continued T-38 stress reports review (for validity) and revisions (FY 08-12); and Phase VIII (FY13).

Additional phases (e.g., Phases IX and X) are at the discretion of the Government; any move towards these later phases will be discussed with the contractor as a logical outcome of their T- 38 stress reports evaluation at the conclusion of Phase VIII.

2.0 SERVICE SUMMARY:

Table 1 describes the Service Summary for the tasks as outlined in this PWS. Most of the efforts as described in this PWS will be engineering services and program management related.

3.0 GOVERNMENT FURNISHED PROPERTY AND SERVICES:

3.1 Modification Drawings, Finite Element Models, and Reports Provided:

3.1.1 T-38C Modification Drawings: The Government will provide the contractor with all the required T-38C modification drawings; in particular, those that were not previously delivered in any other T-38 engineering effort that the contractor is involved with. The intention here is for the contractor to have all the required configuration baseline data readily available, assisting in the evaluation of the stress reports.

3.1.2 T-38 Finite Element Models: The Government will provide the contractor with all the available T-38 FEMs, as applicable, and especially those not previously delivered to the contractor under any other T-38 engineering effort.

3.1.3 Reports: The Government will provide the contractor with all the necessary Government Technical Orders (TOs), Time Compliant Technical Orders (TCTOs), and contractor reports, required to accomplish the tasks as detailed in this PWS. For historical reference, the earlier PWS documents for both the T-38 FEM and T-38 Stress Reports Updates are listed as applicable documents (see Ref. 7 to 18, Attachment One).

3.2 Security and Access to Government Facilities and Equipment:

3.2.1 Security Clearance: The efforts required for this task are UNCLASSIFIED and will not require Contractor personnel to obtain a security clearance. Contractor personnel shall abide by all Air Force rules, procedures, and standard of conduct. Contractors requiring access to Air Force Automated Information Systems (AIS) shall have background investigations and security awareness training completed prior to the start of contract performance. When the period of performance is complete and/or the contractor personnel leave work on this project, they will return all access cards and base identification badges within five days.

3 T38 Stress Reports Update – Phase VIII

Table 1 – Service Summary (SS) for Phase VIII of the T-38 Stress Reports Updates

Performance Objectives PWS Reference

Performance Threshold (Minimum Acceptable)

Engineering Technical Activities: Contractor to provide support engineering analyses, assessments, and research towards the “next generation” T-38 stress reports’ development and preliminary revision.

4.3.1.1 through 4.3.1.6; 4.3.4.1, 4.3.5.1

For engineering analyses (or assessments or studies): All actions accomplished as required with no more than one disapproval by the Government for technical discrepancies per technical report. Any necessary corrections must be made within 30 days of Government notification" to the Performance Threshold column/Engineering Technical Activities row of the Service Summary.

Computer Modeling Activities:

Contractor to provide any additional finite element modeling, analysis, and associated engineering activities to use the validated and functional T-38 FEM in support of the T-38 stress reports evaluation. The contractor to assist in the compatibility of the contractor model (FEM) to the Government system, also addressing Government related technical questions that support their modeling activities.

4.3.1.2, 4.3.1.3, 4.3.1.6, 4.3.4.1, 4.3.5.1

Contractor to work with the most updated version of the T-38 FEM. The model shall be 100% compatible with the computer systems at Hill AFB.

As a reference for the fidelity of FEM to use for the Phase IX stress analyses, the target tolerance for the Phase IX FEM validation efforts shall be ±10 percent, with the results subject to final Government approval.

Technical Documentation:

Contractor to generate timely, error free reporting and documentation;

includes activities as quarterly reporting, meeting minutes, and the final Phase VI report.

4.3.1.1 through 4.3.1.6; 4.3.2.1, 4.3.2.2, 5.2.1, 5.2.2

95% of revisions are error free in the final product.

Preliminary documentation of the reports to be 90% error free.

3.2.2 Access to Government Facilities: Access to Government facilities is limited. Therefore, the contractor shall coordinate the need, time, and personnel requiring access to Government facilities with the Government Program Manager (PM), at least one week prior to need. The Government PM or designated representative will coordinate between the contractor and base personnel as required.

3.2.3 Access to Government Equipment: The Government PM will assist the contractor in obtaining the necessary clearance for access to Government equipment, as the program dictates.

4.0 GENERAL INFORMATION:

4.1 General Requirements:

This program is intended to satisfy the requirements of the T-38 ASIP Mgr. and the T-38 Integrity Analysis Section (WLDEJ). Although this program is related more to static strength

4 T38 Stress Reports Update – Phase VIII stress analyses, there is an associated element of durability and damage tolerance involved, especially when related to aircraft loading. As such, and as a reference only, general requirements for the USAF’s Aircraft Structural Integrity Program (ASIP) are given in Air Force Policy Directive 63-10 and Air Force Instruction 63-1001 (see Refs. 1 and 2, Attachment One).

In addition, ASIP is detailed in Mil-STD-1530C (see Ref. 5, Attachment One).

4.2 Technical Objectives and Goals:

Since the USAF took possession of its first T-38 “Talon” in 1961, this weapon system has undergone significant structural modifications to meet the demands of training four decades (and more) worth of pilots. As such, and to meet these continued training demands, the current engineering objective for the T-38 fleet is to extend the weapon system’s life (utility) out to 2020 (and possibly beyond). To meet the continually increasing life extension goals for the T-38 fleet, significant aircraft structural changes have historically been undertaken, such as replacing parts with improved substitutes (e.g., the -29 wing is an improvement over the -27 wing), major modification programs (e.g., a steel dorsal longeron replacement, new bulkheads, and the inclusion of auxiliary air intakes), and depot economy task activities.

In addition to T-38 structural life extension efforts, and to meet the training needs for each generation of new pilots, the student pilot’s training syllabus is continuously being restructured, often resulting in much more severe loading induced on the T-38 airframe. For example, the current Introduction to Fighter Fundamentals (IFF) usage (syllabus) is thought to be significantly more damaging to the aircraft structure than the earlier Lead-in Fighter (LIF) usage. Coupled with the changing aircraft configuration, due to the aforementioned modifications, there is an associated change in the internal loads, mass distribution, and stresses in the T-38 fuselage and wing structure, thereby raising concern as to the applicability of earlier stress analyses for use on the current configuration T-38.

As previously discussed, and to address these stress analyses related issues, the first step in the re-evaluation of the T-38’s stress reports requires an updated, comprehensive FEM. Using the completed and validated T-38 FEM, in tandem with realistic T-38 flight loads data (now available) and the section properties data, the contractor shall have the necessary engineering information to fully review the dated T-38 stress reports. In addition, and as a second step, safety critical structural items that have recently been identified, in a 2005 program, need further scrutiny from more updated and refined stress analyses (see Ref. 33, Attachment One). This review and updating activity of the T-38 stress reports has a direct tie-in with aircraft system safety, and will ensure the continued structural integrity of the T-38 fleet for decades to come.

4.2.1 Multi-Phased Approach:

The first phase of the T-38 stress reports updating dealt with what the contractor determines to be the most logical, and value-added to the Government, course of action for this program. In general, the contractor performed the necessary research and preliminary analyses to then present to the Government their proposed “way ahead.” Having been approved by the Government, this

5 T38 Stress Reports Update – Phase VIII plan now directs the spirit of the contracted efforts for the various succeeding phases (as required by the Government).

The purpose of the seventh phase of this program is to continue evaluating and analyzing specific cases from the T-38 stress reports, particularly building on the T-38 fuselage, wing, and empennage. Thus, the contractor shall carry on with their updating of the T-38’s stress reports. In addition, the contractor shall consolidate all prior reports completed during Phases II-VI with the report for Phase VII. Due to the amount of pages this will entail, the reports will be separated into volumes based on major subassemblies (e.g. fuselage, wing, empennage, etc). All published NGC stress reports and FEM documentation (to date) are included in the applicable documents to this PWS (see Ref. 32, 34-46, Attachment One).

4.3 Specific Requirements:

4.3.1 Contractor Services: The contractor shall provide the appropriate engineering, program management, and technical services as required for this PWS. Limited travel will be required to meet the goals of this effort.

4.3.1.1 T-38 Stress Reports Update - Phase VIII: In Phase I, the contractor was tasked to evaluate all existing T-38 stress reports, then determine a strategy for how best to review then update these works. Continuing from the Phase I and II efforts, and being mindful of other related activities, such as Northrop report NOR 05-104, “Identification of T-38 Safety Critical Structural Components” (see Ref. 33, Attachment One), the contractor shall build upon the updating activities from all phases (in particular, the recent Phase III, IV, V, VI, and VII analyses). For example, and as was discussed in the Phase I PWS (see Ref. 14, Attachment One), there are at least 50-plus critical structural components that needed to be re-evaluated in terms of their revised (updated) static strength “Margins of Safety” (MOS). Some of these components remain to be evaluated, with the intention being that in each phase the contractor will build upon the earlier phases’ body of knowledge.

As such, the contractor shall:

1. Complete and document analyses for 47 Section C fuselage locations which have not been updated as of completion of the T-38 Stress Reports Update – Phase VII.

2. Study the load/stress differences between the latest Phase IX FEM and the FEMs used from prior phases. Make recommendations for areas where the stress analysis should be revisited using results from the latest FEM.

3. Complete and document analyses for 53 additional fuselage locations (locations to be selected based on select structural components for PCIII and low margins of safety based on updated calculations).

4. Document analyses for the approximately 125 locations which were completed in prior phases but not incorporated in the final reports (due to first five phases being Time and Material).

5. Complete and document a static stress analysis study on the structure near the inlet ducts to assess the impact of a Hammershock occurrence in flight. During the Phase

6 T38 Stress Reports Update – Phase VIII

IX FEM (complete in Sept 2013), Hammershock duct pressures were created for 20 design conditions and applied to the FEM in combination with flight conditions.

6. Complete the -29 wing analyses for the remaining 165 wing locations which have not yet been updated as of completion of the T-38 Stress Reports Update – Phase VII.

7. Complete -33 wing analyses for the remaining 105 wing locations which have not yet been updated as of completion of the T-38 Stress Reports Update – Phase VII.

4.3.1.2 Data Compatibility: To support the review and updating of the T-38 stress reports, all contractor FEM/FEA work shall be fully compatible with MSC PATRAN 2010, NASTRAN 2010, and a MSFT Windows based operating system.

4.3.1.3 Data Analysis: In support of the T-38 stress reports update, data modeling and analysis techniques for the T-38 FEM are fully addressed in NOR 09-100 and NOR 09-101 (see Ref. 44 and 45). In addition, the Phases I-IX FEM and Phases I-VII Stress Reports PWS are also good resources to review for the over-arching Government requirements for this program (see Ref. 7 to 18, Attachment One). All reporting of the data analysis shall be according to the guidelines of the Service Summary (see Table 1) and Para. 5.2.2 of this PWS (CDRL A039 and A047, Attachment Two).

Support calculations for the analysis updates are required for the Phase VIII work. These support analyses include, but are not limited to, some of the following: FEAs (runs), loads development, strain gage validation, and classical hand calculations.

4.3.1.4 Data Documentation: Data required for updating the T-38 stress analysis reports, such as support FEAs and classical hand calculations, shall be documented by the contractor for all activities in Phase VIII (see also comments from Para. 4.3.1.3). Updates to the report shall be consistent in format, style, and content with the final report for the T-38 Stress Reports Update - Phase VII. Exceptions noted in paragraphs 4.3.1.4.1 through 4.3.1.4.2.

Report for Phase VIII should be entitled: “T-38 Stress Reports Update: Phase VIII Analysis” (CDRL A047, Attachment Two). Guidelines for reporting are further identified in Table 1, the Service Delivery Summary.

4.3.1.4.1 T-38 Stress Reports: As a reference to assist with the updates during final reporting, the following is a list of the T-38 stress reports that have been delivered to the Government as of July 2011:

• NOR 06-102, “Phase I - T-38 Stress Reports Review, Program Planning, and Preliminary Updating Activities,” April 2008.

• NOR 08-100A, “T-38C Stress Reports Update: Phase II Analysis - Fuselage, Vertical Stabilizer and Horizontal Stabilizer Stress Analysis,” December 2008.

• NOR 08-100B, “T-38 Stress Reports Update: Phase I-III Analysis - Fuselage, Vertical Stabilizer and Horizontal Stabilizer Stress Analysis,” September 2009.

• NOR 08-100C, “T-38 Stress Reports Update: Phase IV Analysis - T-38C Fuselage Update Analysis - Revision C,” September 2010.

7 T38 Stress Reports Update – Phase VIII

4.3.1.4.2 Recommended Phase IX Activities: The contractor shall conduct a review of Stress Report update status and provide a white paper outlining work that could be performed in a potential Stress Report Phase IX task order. This white paper is to be provided 6 months ARO contract award.

4.3.1.5 Formal Evaluations: The following formal evaluations are to be supported by the Contractor:

1) Preliminary Program Review: A preliminary program review for the contractor to present their refined “way ahead” for Phase VIII, and further discuss the anticipated challenges with the tasks as described in this PWS, shall be held no later than two months ARO contract award. The contractor shall provide a PPT document as part of the first quarterly report (CDRL A039, Attachment Two).

2) Final Program Review: A final review to present the final results and discuss the outcomes of the T-38 Stress Reports Update – Phase VIII shall be held at the conclusion of the program. The contractor shall provide a PPT document as part of the last quarterly report (CDRL A039, Attachment Two).

4.3.1.6 Contractor Travel: The following are the contractor travel requirements:

1) Preliminary Program Review Trip: The contractor is authorized one trip for a maximum three people (minimum one engineer) for up to three days to Hill AFB, Utah, to present their approach to developing the document “T-38 Stress Reports Update: Phase VIII Analyses,” and further discuss the program’s anticipated challenges.

2) Final Program Review Trip: The contractor is authorized one trip for a maximum three people (minimum one engineer) for up to three days to Hill AFB, Utah, to present the “T-38 Stress Reports Update: Phase VIII Analyses,” and discuss the program’s anticipated efforts for Phase VII. Activities shall include working with Hill AFB engineers on the T-38 FEM (e.g., as related to the stress reports), reviewing and understanding the T-38 engineers’ requirements, and ensuring compatibility of the contractor and Government modeling systems.

3) Miscellaneous Program and Conference Support Trips: The contractor is authorized two miscellaneous trips for a maximum two people each trip (minimum one engineer), for up to five days (each trip) to any of the following locations: 1) Hill AFB, UT; 2) Randolph AFB, TX; or 3) Southwest Research Institute (SwRI), San Antonio, TX. In addition, the contractor is authorized for one conference support trip (including conference fees) for a maximum two people (all technical personnel) to support the T-38 ASIP Mgr. at the 2014 ASIP conference.

These trips are intended to provide the contractor flexibility in supporting the T-38 stress reports updates and/or associated FEM activities; as such, there are no firm requirements.

Miscellaneous trips shall be reported in the quarterly reports (CDRL A039, Attachment Two).

4.3.2 Integrated Management Support:

8 T38 Stress Reports Update – Phase VIII

4.3.2.1 Contractor Program Manager: For all tasks required by this PWS, the contractor shall identify and maintain a program manager (PM). The program manager shall have a defined and direct line of authority and responsibility over all aspects of the work effort. The contractor’s work progress, status and any corrective action shall be documented (CDRL A039, Attachment Two). The contractor shall report ALL contractor labor hours (including subcontractor labor hours) required for performance of services provided under this contract via a secure data collection site. The contractor is required to completely fill in all required data fields at http://www.ecmra.mil. Reporting inputs will be for the labor executed during the period of performance for each Government fiscal year (FY), which runs 1 October through 30 September.

While inputs may be reported any time during the FY, all data shall be reported no later than 31 October* of each calendar year. Contractors may direct questions to the CMRA help desk.

4.3.2.2 Contractor Interim Reporting: The contractor shall submit monthly progress and management reports and quarterly technical status reports (to include what analyses have been completed during Phase VIII and those currently in work) on the program’s progress, as detailed in this PWS (CDRL A039, Attachment Two). Reports shall be relatively error free and technically correct, as per the guidelines of Table 1.

4.3.3 Management Systems Requirements:

Management systems requirements are to be provided by the contractor.

4.3.4 Reliability Program:

4.3.4.1 FEM and Stress Analysis Reliability: Additional T-38 FEMs, used in support of the stress report updates, shall be validated in accordance with Northrop Grumman’s FEM checkout process. See Table 1 for additional guidelines on FEM reliability.

4.3.5 Maintainability Program:

4.3.5.1 FEM and Stress Analysis Maintainability: The contractor is responsible for operating, validating, verifying, and maintaining the additional FEMs (used for stress analysis updates) and the associated documentation. This includes retaining current and Government compatible versions of the software used for FEM/FEA activities. Reporting and documentation (i.e., of analyses and calculations) is further addressed in Para. 4.3.1.3 and 4.3.1.4. (see also Table 1 for additional guidelines).

4.3.5.2 Continuation of Essential DoD Contractor Services During Crisis: The contractor is responsible for ensuring provisions are in place to continue to provide the essential services of this program in times of crisis. The contractor shall work with the Government to define those essential services, with these services defined in the first quarterly report (CDRL A039, Attachment Two).

5.0 APPENDICES AND ATTACHMENTS:

http://www.ecmra.mil/

9 T38 Stress Reports Update – Phase VIII

5.1 Applicable Documents:

5.1.1 Document Availability and Delivery: If the Government deems appropriate, the contractor may use other applicable documents. Also, the contractor shall request necessary documents from the Government, as required. In turn, the Government shall supply all required TOs and TCTOs for the contractor to perform the tasks of this PWS.

5.2 Applicable CDRLs:

5.2.1 CDRL List: The deliverable products (CDRL list) for this PWS are presented in Table 2 (see Attachment Two). Any T-38 stress reports related files, including support FEM and/or FEA documentation (CDRLs A039 and A047, Attachment Two), shall be compatible with the most recent version software as discussed in Para. 4.3.1.2 (Data Compatibility), and fully compatible with the computer systems used by WLDEJ (see also Table 1).

Note: See DD Form 1423 for further details.

5.2.2 Contractor Reporting: The contractor shall submit reports in accordance with the DIDs specified in DD form 1423 (CDRLs A039 and A047, Attachment Two) with the following stipulations. Tables, figures, drawings, etc. shall be placed immediately following their reference in the main body of the text (i.e. same page if possible or on the next page). Reports shall be submitted in a hard cover 3-ring binder. This will facilitate the report revision by allowing addition/replacement of individual pages without having to submit a completely new report. An electronic copy (of the number required in the DD Form 1423) of the final report shall be submitted in both Microsoft Word for Windows and Adobe Acrobat (.pdf) format to the T-38 ASIP Manager at AFLCMC/WLDEJ.

10 T38 Stress Reports Update – Phase VIII

ACRONYMS AND ABBREVIATIONS

ACStrSeq - Aircraft Stress Sequence Program ACSG - Aircraft Sustainment Group AETC - Air Education and Training Command AF - Air Force AFB - Air Force Base AirStats - flight loads post-processing software ARO - after receipt of order ASIMIS - Aircraft Structural Integrity Monitoring Information System

(Tinker AFB, OK) ASIP - Aircraft Structural Integrity Program DoD - Department of the Defense DTA - damage tolerance analysis FEA - finite element analysis FEM - finite element model FMM - fine mesh model (finite element) FCL - fatigue critical location FLDR - flight loads data recorder FS - Fuselage Station IATP - Individual Aircraft Tracking Program IAW - in accordance with IFF - Introduction to Fighter Fundamentals IMIS - Integrated Maintenance Information System (Boeing, St. Louis) ISIDR - Instrumentation System/Installation Description Report Mgr. - Manager MOS - Margin of Safety (Note: Often shown as simply M.S.)

MSC/NASTRAN - finite element computer program maintained by the MacNeal-Schwendler Corporation MSFT - Microsoft NGC - Northrop Grumman Corporation NOR - Northrop OEM - Original Equipment Manufacturer OO-ALC - Ogden Air Logistics Center Para. - paragraph PBESC - Performance Based Engineering Services Contract PWS - Performance Work Statement PM - Program Manager QA - Quality Assurance Ref. - reference

11 T38 Stress Reports Update – Phase VIII

ACRONYMS AND ABBREVIATIONS (CONT)

Sect. - section SS - Service Summary S/N - serial number SPM - System Program Manager SPO - System Program Office SUPT - Specialized Undergraduate Pilot Training SwRI - Southwest Research Institute TBD - to be determined TCTO - Time Compliant Technical Order TO - Technical Order USAF - United States Air Force WS - Wing Station

A1-1 T38 Stress Reports Update – Phase VIII

ATTACHMENT ONE: LIST OF APPLICABLE DOCUMENTS

Department of Defense (DoD) Specifications:

1) Air Force Policy Directive 63-10, “Aircraft Structural Integrity,” 1 November 1997.

2) Air Force Instruction 63-1001, “Aircraft Structural Integrity Program,” 1 November

1997.

Department of Defense (DoD) Standards:

3) MIL-HDBK-5E, “Metallic Materials and Elements for Aerospace Vehicle Structures,” June 1987.

4) MIL-STD-1521B, “Technical Reviews and Audits for Systems, Equipment, and Computer Software,” (Canceled 10 APR 1995).

5) MIL-STD-1530C, “Aircraft Structural Integrity Program,” November 2005.

6) MIL-STD-1840B, “Automated Interchange of Technical Information.”

Other DoD Documents:

7) Statement of Work, “T-38 Fuselage Finite Model (Aft of FS 284) – Phase I: Background

Information and Preliminary FEM Development,” 23 February 2004.

8) Performance Based Statement of Work, “Phase II: T-38 Idealized FEM Development and

Preliminary Integration,” 16 June 2005.

9) Performance Based Statement of Work, “Phase III: T-38 FEM Validation and Final

Reporting,” 28 October 2006.

10) Performance Based Statement of Work, “Phase IV: T-38 FEM Sustainment and

Improvement,” 23 April 2007.

11) Performance Work Statement, “Phase V: T-38 FEM Sustainment and Improvement,” 7

August 2008.

12) Performance Work Statement, “Phase VI: T-38 FEM Sustainment and Improvement,” 6

June 2009.

13) Performance Work Statement, “Phase VII: T-38 FEM Sustainment and Improvement,”

30 June 2010.

14) Performance Based Statement of Work, “Phase I: T-38 Stress Reports Review, Program

Planning, and Preliminary Updating Activities, Rev. A,” 21 March 2006.

15) Performance Based Statement of Work, “Phase II: T-38 Stress Reports Review and

Continued Updating Activities,” 26 April 2007.

16) Performance Work Statement, “Phase III: T-38 Stress Reports Review and Continued

Updating Activities,” 7 August 2008.

17) Performance Work Statement, “Phase IV: T-38 Stress Reports Review and Continued

Updating Activities,” 9 June 2009.

18) Performance Work Statement, “Phase V: T-38 Stress Reports Review and Continued

Updating Activities,” 1 June 2010.

A1-2 T38 Stress Reports Update – Phase VIII

Other Publications:

19) NAI 57-41, “T-38 Basic Loads.”

20) NAI 57-55, “T-38 Wing Stress Analysis,” November 1966.

21) NAI 57-57, “T-38 Fuselage Stress Analysis, Vol. I through III,” 1959-60.

22) NAI 57-58, “T-38 Vertical Tail Section Properties and Stress Analysis,” August 1958.

23) NAI 57-59, “T-38 Horizontal Tail Section Properties and Stress Analysis,” January 1963.

24) NOR 63-94, “T-38A Stress Analysis of Class I Castings.”

25) NOR 67-90, “F-5/T-38A Stress Analysis of Aluminum Forgings.”

26) NOR 78-115, “T-38A Aircraft Improved Wing Structure Internal Load Distribution and

Stress Analysis.”

27) NOR 99-105, “T-38 Wing Life Improvement Program Phase II, Stress Analysis Report.”

28) NOR 99-107, “T-38 Wing Life Improvement Program Phase II, -33 Finite Element

Model Description and Internal Loads Report,” May 2005.

29) NOR 00-101, “T-38 Wing Life Improvement Program Phase III, Durability and Damage

Tolerance Analysis,” June 2000.

30) NOR 02-101, “T-38 Wing Life Improvement Program Phase V, Loads Application

Report.”

31) NOR 04-100, “T-38 Finite Element Analysis – T-38 Fuselage Program Plan,” November

2004 (revised April 2005).

32) NOR 05-101, “T-38 Fuselage Finite Element Model Program Phase I,” June 2005.

33) NOR 05-104, “Identification of T-38 Safety Critical Structural Components,” September

2005.

34) NOR 06-102, “Phase I - T-38 Stress Reports Review, Program Planning, and Preliminary

Updating Activities,” April 2008.

35) NOR 06-104, “T-38 Fuselage Finite Element Model Program Phase II - Fuselage Finite

Element Model Description,” September 2006.

36) NOR 06-105, “T-38 Fuselage Finite Element Model Program Phase II - Finite Element

Model User's Manual,” September 2006.

37) NOR 07-100, “T-38 Fuselage Finite Element Model Program Phase IV - Fuselage Finite

Element Model Description and Internal Loads,” December 2008.

38) NOR 07-101, “T-38 Fuselage Finite Element Model Program Phase III - Finite Element

Model User's Manual,” July 2007.

39) NOR 07-102, “T-38 Fuselage Finite Element Model Program Phase III - Fuselage Finite

Element Model Section Properties,” July 2007.

40) NOR 08-100A, “T-38C Stress Reports Update: Phase II Analysis - Fuselage, Vertical

Stabilizer and Horizontal Stabilizer Stress Analysis,” December 2008.

41) NOR 08-100B, “T-38 Stress Reports Update: Phase I-III Analysis - Fuselage, Vertical

Stabilizer and Horizontal Stabilizer Stress Analysis,” September 2009.

42) NOR 08-100C, “T-38 Stress Reports Update: Phase IV Analysis - T-38C Fuselage

Update Analysis - Revision C,” September 2010.

43) NOR 08-103, “T-38 Fuselage Finite Element Model Program Phase IV - Fuselage Finite

Element Model Section Properties,” September 2008.

44) NOR 09-100, “T-38C Finite Element Model Program Phase V - Finite Element Model

Description and Internal Loads,” September 2010.

A1-3 T38 Stress Reports Update – Phase VIII

45) NOR 09-101, “T-38C Finite Element Model Program Phase V - Finite Element Model Section Properties,” September 2010.

46) SwRI 06-5898, “AETC T-38 SUPT Maneuver and Stress Spectra,” May 1994.

47) SwRI 06-6611, “T-38 Forward Fuselage Stress Analysis, NASTRAN Idealization

Report,” June 1997.

48) SwRI 06-6611, “T-38 Forward Fuselage Stress Analysis, NASTRAN Validation Report,”

November 1997.

49) SwRI 06-6723, “AETC T-38 IFF Maneuver and Stress Spectra,” May 1997.

50) SwRI 06-7278, “Revised T-38 Durability and Damage Tolerance Update Ground Rules

Report,” December 1998.

51) SwRI 18-11896, T-38 DADTA Update – Ground Rules Report,” September 2006.

52) SwRI 18-8353, “T-38 Wing Stress Analysis Idealization Report,” June 2000.

53) SwRI 18-8353, “T-38 Wing Stress Analysis Validation Report,” June 2000.

54) SwRI 18-1334, “T-38 SUPT/IFF Coupon Analysis Results,” March 2001.

55) SwRI 18-8674, “T-38 Longeron Splice Fine Mesh Model Integration.”

Note: If the Government deems appropriate, the contractor may use other applicable documents.

Documents listed above are applicable in their entirety.

A2-1 T38 Stress Reports Update – Phase VIII

ATTACHMENT TWO: APPLICABLE CDRLS

Table 2 – CDRL List for the T-38 Stress Reports Update – Phase VIII

PWS Paragraph CDRL CDRL Description DID 4.3.1.3., 4.3.1.5, 4.3.1.6, 4.3.2.1, 4.3.2.2, 4.3.5.2, 5.2.1, 5.2.2

A039 Contractor’s Progress, Status and Mgt Reports

DI-MGMT-80227

4.3.1.3., 4.3.1.4, 5.2.1, 5.2.2

A047 Scientific and Technical Reports:

- T-38 Stress Reports Update:

Phase VIII Analysis

DI-MISC-80711A

Table 2 – CDRL List for the T-38 Stress Reports Update – Phase VIII