Are any of these Soyuz controls involved in separating the orbital module?

Question

According to this Q & A, it's very likely that the Soyuz spacecraft's orbital module can be manually separated independent of other spacecraft operations.

On this CollectSpace page, there's an excellent photo of a bank of Soyuz control panel buttons with guards to protect against accidental activation of critical functions:

I note that three of the buttons (#3, #12, #13) are labeled with "БO", the abbreviation for бытовой отсек (bytovoi otsek), or Orbital Module. I don't know any Russian, so I can't tell what the remainder of the labels say. It looks like buttons #12 and #13 are labeled very similarly if not identically.

Are any of these labels plausibly interpretable as "separate/jettison/disconnect orbital module"?

Any transliteration/translation/interpretation of the other controls is welcome in addition.

@coredump: You really don't want to jettison the service module before you perform the reentry burn. — SF., Aug 31 '18 at 08:37

SF. · Answer 1 · 2018-08-31T09:31:45.437

Descent/discharge mark (flag, warning, attribute)
Preparation to separation
Open KSD (pressure relief valve) of BO (orbital module)
[explosive] separation of mechanical contacts
Choice of DPO-B (Primary Berthing and Attitude Control Thrusters) for descent
emergency detachment
SKD (Orbital Maneuver Engine) on
SKD (Orbital Maneuver Engine) off
Separation
Emergency supply on
Connection of pressurized sections
(explosive) detachment of BO (orbital module)
(explosive) detachment of BO (orbital module)
Conservation (Soyuz Crew Ops manual translates it literally as "Conservation, Pickling")
thermal sensor on-line
thermal sensor off-line
prepare dehermetization
dehermetization

Thanks for the translations -- unfortunately I can only accept one answer. — Russell Borogove, Sep 25 '18 at 19:43

Organic Marble · Accepted Answer · 2020-08-05T18:27:05.280

12

The 12th and 13th Critical Command Keys "ОТСТРЕЛ БО" are БО (Orbital Module) Jettison.

The БО separation (jettison) can be executed either automatically on the nominal separation schedule within the unified cyclogram or on the ОВК12 and ОВК 13 Critical Commands in case of the urgent descent before the СКД (Orbital Maneuver Engine) ignition for retrofire.

Perhaps you have to press them both simo? (Still checking on that.)

Source: Soyuz Crew Operations Manual.

This is all I can find from there on the Critical Command Keys.

Descent Flag
Separation Config (service module?)
?
?
?
?
Ignite
?
Separation (service module?)
Contingency Power On
?
Orbital Module Jettison
Orbital Module Jettison
?
?
Thermal Sensors Disconnect
Configur Depressurize (sic) Arm the depress system?
Depressurize

edited Aug 05 '20 at 18:27

answered Aug 30 '18 at 22:27

Organic Marble

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I wonder if any of the agencies considered pictographs/iconography for controls on international missions. – anon Aug 30 '18 at 22:33
Yeah. The official language of the ISS is English. But... – Organic Marble Aug 30 '18 at 22:39
I'm having trouble finding a good gloss; Google translate gives ОТСТРЕЛ -> "dismissed" for uppercase and отстрел -> "shooting" for lowercase. – Russell Borogove Aug 30 '18 at 23:28
Good find, though! – Russell Borogove Aug 30 '18 at 23:31
1

The duplication of the OM jett control is really interesting -- is it really the most drastic of these operations, that it requires the extra guard of simultaneous press? – Russell Borogove Aug 31 '18 at 02:05
1

The depress has an arm/fire and is behind a screwed-down panel guard....maybe it's worse. – Organic Marble Aug 31 '18 at 02:05
I suppose it's rather a redundant button, so that pressing one or the other would work. You do this after the reentry burn, not quite enough time to dismantle the panel and short the contacts if the button fails. – SF. Aug 31 '18 at 02:36
The document always refers to command 12 AND 13. But it's poorly written, there us not enough info for me to tell. – Organic Marble Aug 31 '18 at 02:44

Are any of these Soyuz controls involved in separating the orbital module?

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