No manoeuvres of Cosmos 2525March 29 96.64 deg 90.87 min 316 319 kmJuly 09 96.63 90.53 299 302
Quote from: Alter Sachse on 07/11/2018 02:36 pmNo manoeuvres of Cosmos 2525March 29 96.64 deg 90.87 min 316 319 kmJuly 09 96.63 90.53 299 302Just the very small manoeuvre which I reported on May 24.
Quote from: Phillip Clark on 07/11/2018 02:39 pmQuote from: Alter Sachse on 07/11/2018 02:36 pmNo manoeuvres of Cosmos 2525March 29 96.64 deg 90.87 min 316 319 kmJuly 09 96.63 90.53 299 302Just the very small manoeuvre which I reported on May 24.Or it was inaccurate data ?
I thought he would raise his orbit or holding a certain level (to do his job).But he falls and falls.
Quote from: Alter Sachse on 07/11/2018 02:36 pmNo manoeuvres of Cosmos 2525March 29 96.64 deg 90.87 min 316 319 kmJuly 09 96.63 90.53 299 302July 28 96.63 90.45 295 299
So far the Cosmos 2525 orbit has continued its slow decay.
Assuming Kosmos 2525 is VNIIEM's Zvezda satellite (which we have every reason to believe based on evidence presented earlier in this thread), it has a thermal catalytic propulsion system of OKB Fakel called K50-10.5. That at least was the plan in 2015 when this paper was published (about the selection of engines for Zvezda):http://ihst.ru/files/pdfs/Korolevskie-chteniya-2015-Materialy.pdf(see p. 59-60)At the time the objective was to place Zvezda into a nearly circular 500 km Sun-synchronous orbit. According to the article, the engine unit was to be used to correct orbit insertion errors, maintain the working orbit throughout the satellite's lifetime and ensure proper phasing between satellites in a constellation. The mass of the engine unit should not exceed 30 kg. It was to have a total impulse of not more than 2 t.s , a thrust of between 5 mN and 1N and use monopropellant. Four types of engines were evaluated and in the end the choice fell on Fakel's K50-10.5. This, by the way, is the same engine that is carried by Cosmos-2519 (according to data from Fakel).