Orlets-1 or Don was an soviet (later Russian) film return reconnaissance satellite, which featured 8 small capsules to return the film.
Following evaluation of flight trials in April-May 1977 it was concluded that the Yantar-2K was not capable of providing strategic warning of attack. Therefore three additional variants were developed, one of them the wide-spectrum detail and survey satellite Orlets.
Orlets featured a panoramic camera and drew on features of an existing draft project designated Yantar-6K. The redesigned spacecraft was expandable, with Phase 1 (Orlets-1) being launched by the Soyuz-U2 launch vehicle, equipped with 8 film return capsules and having a design life of 60 days. At the end of the mission, the main satellite was detonated in orbit and was not recovered. Later flights used the Soyuz-U launch vehicle, when the Soyuz-U2 was no longer available.
|Nation:||USSR / Russia|
|Type / Application:||Reconnaissance, photo (film return)|
|Kosmos 2031 (Orlets-1 #1, Don #1)||1989-056A||18.07.1989||Ba LC-1/5||Soyuz-U|
|Kosmos 2101 (Orlets-1 #2, Don #2)||1990-087A||01.10.1990||Ba LC-1/5||Soyuz-U2|
|Kosmos 2163 (Orlets-1 #3, Don #3)||1991-071A||09.10.1991||Ba LC-1/5||Soyuz-U2|
|Kosmos 2225 (Orlets-1 #4, Don #4)||1992-091A||22.12.1992||Ba LC-31/6||Soyuz-U|
|Kosmos 2262 (Orlets-1 #5, Don #5)||1993-057A||07.09.1993||Ba LC-31/6||Soyuz-U2|
|Kosmos 2343 (Orlets-1 #6, Don #6)||1997-024A||15.05.1997||Ba LC-31/6||Soyuz-U|
|Kosmos 2399 (Orlets-1 #7, Don #7)||2003-035A||12.08.2003||Ba LC-31/6||Soyuz-U|
|Kosmos 2423 (Orlets-1 #8, Don #8)||2006-039A||14.09.2006||Ba LC-31/6||Soyuz-U|