Moog Marks 25 Years Since ESPA Design Milestone: Innovating Space Rideshare
spacenews.com Nov 11, 2026

Moog Marks 25 Years Since ESPA Design Milestone: Innovating Space Rideshare

AI-summarised brief · reviewed before publication

Moog Inc. commemorated the 25th anniversary of the Evolved Secondary Payload Adapter (ESPA) ring’s Critical Design Review, completed on Jan. 18, 2001. Developed from a 1999 Air Force‑industry partnership, the ESPA ring allowed launch vehicles to carry multiple secondary payloads in the unused volume beneath primary satellites, cutting costs and adding flexibility for commercial constellations, technology demos and defense missions. Over the quarter‑century the family has grown into modular variants—Standard, Heavy and Grande—and serves as a structural basis for spacecraft buses used by NASA, U.S. government and private operators worldwide. Moog will exhibit a flight‑qualified ESPA ring at the National Museum of Nuclear Science & History in Albuquerque from Nov. 7, 2026 to Jan. 10, 2027, highlighting its lasting role in rideshare access.

💡 Why It Matters

  • · ESPA’s modular rideshare capability unlocked the economics that now power large‑scale satellite constellations, making frequent, low‑cost launches a practical reality.