CCSDS File Delivery Protocol

{{short description|Protocol for transferring files from space to Earth}}

{{hatnote|For other protocols with the same abbreviation, see CFDP (disambiguation).}}

CCSDS File Delivery Protocol (CFDP) is a file transfer protocol for use in space, e.g. between Earth and spacecraft in Earth orbit or between Earth and spacecraft on interplanetary missions.

The protocol is defined by CCSDS active recommended standard 727.0-B-5.{{cite web |date=July 2020 |title=CCSDS File Delivery Protocol (CFDP), Recommended Standard, Issue 5 |url=https://ccsds.org/wp-content/uploads/gravity_forms/5-448e85c647331d9cbaf66c096458bdd5/2025/01//727x0b5e1.pdf |url-status=live |archive-url=https://web.archive.org/web/20250417092537/https://ccsds.org/wp-content/uploads/gravity_forms/5-448e85c647331d9cbaf66c096458bdd5/2025/01//727x0b5e1.pdf |archive-date=27 April 2024 |access-date=2025-04-17 |publisher=Consultative Committee for Space Data Systems}} It is also available as ISO standard 17355:2007.{{Cite web |url=http://www.iso.org/iso/home/store/catalogue_tc/catalogue_detail.htm?csnumber=43829 |title=ISO 17355:2007 |website=ISO |publisher=International Organization for Standardization |access-date=3 May 2024 |archive-date=3 May 2024 |archive-url=https://web.archive.org/web/20240503073632/https://www.iso.org/standard/43829.html |url-status=live }}