HERMES BAA CALL: Rotating Detonation Rocket Engine-Combined Cycle (RDRE-CC) Flight Demonstration

============================================== AMENDMENT 0004 - CLARIFICATION OF WHITEPAPER FORMATTING (TABLE LINE SPACING) ============================================== The purpose of Amendment 0004 is to provide an administrative clarification regarding the line spacing requirements for Phase I White Paper submissions: 1. NARRATIVE TEXT: All core narrative body text must strictly adhere to the double-spaced formatting requirement as outlined in the Call Document (10-point minimum, double-spaced, 1-inch margins). 2. TABLES, CHARTS, & GRAPHICS: As an exception to the general double-spacing rule, offerors are permitted to utilize SINGLE-SPACING within tables (including the Section 5.4 ROM Cost table), charts, schematics, and aerothermal performance curves. This exception has been granted to ensure technical readability and to prevent unnecessary page-limit consumption. All other formatting, page counts, and submission instructions remain unchanged. ============================================== *** END OF AMENDMENT 0004 *** ============================================== AMENDMENT 0003 - REVISION TO SUBMISSION INSTRUCTIONS & POINTS OF CONTACT The purpose of Amendment 0003 is to update and clarify the Phase I White Paper submission procedures and designated Points of Contact under Section 5. SUMMARY OF CHANGES: 1. DISCONTINUATION OF WORKFLOW INBOX: The generic AFRL/AFTC White Paper Workflow Inbox (AFTC.PZRA.BAAs@us.af.mil) shall NOT be used for Phase I White Paper submissions under this Call. 2. DIRECT SUBMISSION TO CONTRACTING OFFICERS: All Phase I White Papers must be submitted via DoD Safe drop requests sent directly to both Mathew Pierson and Kameelah Purdom at the email addresses specified below. 3. HANDLING CONTROLLED UNCLASSIFIED INFORMATION (CUI) / DISTRIBUTION C DATA: Because responsive White Papers are expected to contain Controlled Unclassified Information (CUI) and reference Distribution C technical data, offerors are cautioned that unencrypted commercial