Several of the hardware elements on the biosatellite were improved for Kosmos 2229. The in-flight data recording system was enhanced, making high-quality brain and neuromuscular recordings possible. The monkey feeder system was improved, and a backup juice dispenser was available. The monkey restraint system was modified to allow more arm movement. The neurovestibular data acquisition system was updated through a joint American-Russian development effort, allowing more parameters to be recorded in flight.
The Kosmos 2229 spacecraft orbited the Earth for almost 12 days. The payload, also designated Bion 10, contained thirteen American life sciences experiments. Studies focused on bone, neuromuscular and vestibular physiology, circadian rhythms, and metabolism. Two rhesus monkeys served as experimental subjects on the mission. As on previous Kosmos biosatellite missions, the monkeys were trained to activate food and juice dispensers. In addition, they were trained to operate a foot pedal so that muscle responses could be studied in flight. For in-flight neurovestibular testing, the monkeys were trained to make hand and head movements in response to visual stimuli.
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ). Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).
