Mini-Research Module-1 Rassvet
MIM-1, named Rassvet («Рассвет», “Dawn”), was built using the already-constructed hull of the Science Power Module (NEM). It has two docking units: an active probe-and-drogue one for docking to the nadir port of the Zarya module (with help from the SSRMS), and a passive one for the docking of Soyuz TMA and Progress spacecraft, providing a fourth Russian segment port for these. It has propellant lines that enable a docked Progress to refuel the Zvezda module. Its lifetime is guaranteed for 12 years.
Rassvet was formerly known as the Docking Cargo Module (SGM), Стыковочно Грузовой Модуль; it was manufactured from the residual Dynamic Test Article of the Science Power Platform (NEP), the latter being canceled due to lack of funds. NASA refers to it as MRM-1, Mini Research Module-1.
Rassvet delivery in the U.S. was on 17 December 2009, and it was launched aboard STS-132/ULF-4 on 14 May 2010.
After the docking of STS-132 Atlantis, Rassvet was relocated and docked to the nadir port of the Zarya module using the SRMS and SSRMS on 18 May, the docking ports connecting at 12:19:45 GMT. Hatches between Rassvet and the ISS were opened at 10:52 GMT on 20 May.
Cargoes from EXPRESS Logistics Carrier-3 and ELC4 will be installed onto Rassvet. Cargoes for the future MLM module were delivered on Rassvet, for example: airlock, portable workplace and the ERA manipulator’s spare elbow.
The onboard systems include:
- Active and passive docking systems
- Onboard equipment control system
- Electrical supply system
- Thermal & atmosphere regulation systems
- Fire prevention protection
- Onboard measurement system
- Traffic management and navigation
- Television system
- Means for refueling
- Telecommunication system
- SOTR control system (СОТР: Система Обеспечения Теплового Режима – thermal conditions regulation system)
- Target loading complex
There are five universal workplaces in the pressurized module. Four of them are equipped with the target equipment: glove box, a universal low-temperature thermostat biotechnology, universal high-temperature biotechnology thermostat, vibroprotecting platform. The fifth workstation is equipped with adapters to install scientific equipment (a special pull-out shelves module). More details from an Energiya press release:
- 8 arc frames with extendable module-racks
- glove box (Glovebox-C hardware). This creates an environment for operation with sterile, hazardous substances or bulk matter as well as provides the airlocking, cleaning and sterilization aids. The cleaning level of the working chamber atmosphere is 99.9%. Usable volume is 0.25 m³ with 5 service ports.
- high-temperature universal biotechnological thermostat (UBT-HT). It and the UBT-LT have usable volumes equal to 10 l each, and are designed to provide the required temperature conditions for operation with biological objects. The UBT-HT thermostatting temperature is plus 2 … 37°C.
- low-temperature universal biotechnological thermostat (UBT-LT). Its thermostatting temperature is minus 20°C.
- universal vibration protection platform (VPP-U). This protects the science hardware (up to 50 kg mass) installed on it from onboard background vibration, provides its vibrating insulation at frequencies of 0.4-250 Hz with the coefficient no less than 20 dB.
Assembly and installation of scientific equipment for a specific task is undertaken directly in the operation of the module of the ISS. The total weight placed in the workplace of scientific equipment is more than 100 kg.
According to a Roskosmos news item, MIM-1 is quite noisy:
Skvortsov: New Russian Module Rassvet is the noisiest in the ISS, 1/9/2010
Mini-Research Module (MRM-1), also called Rassvet (Dawn), is the most noisy unit of the International Space Station, Alexander Skvortsov, station commander said, answering the question sent through the ISS Mail Box. The Box available in Memorial Space Museum for any visitor to send a letter to the ISS, is supported by Roscosmos PAO. “There is noise in the station, din of the working equipment. You get used to it easily … But each module has its level of noise, and Rassvet is the noisiest one ….” the ISS commander stated.
Full name:
- МИМ-1: Малый Исследовательский Модуль-1 «Рассвет»
- MRM-1: Mini-Research Module-2 “Dawn”
- MIM-1: Malnyi Issledovatel’skii Modul’-2 Rassvet

| Dry weight | 4700 kilograms |
| Module launch mass | 5075 kg (11,188 pounds) |
| Total launch mass | 8015 kg (17 760 pounds), including 2940 kilograms (6482 pounds) of cargo (European Robotic Arm for Columbus, airlock for Multipurpose Laboratory Module and a portable workplace) on its internal and exterior stowage locations while in Atlantis’ payload bay, and 1392 kg in the pressurized module |
| Maximum hull diameter | 2.35 meters (7.7 feet) |
| Hull length between docking assembly planes | 6.0 meters (19.7 feet) |
| Pressurized volume | 17.4 cubic meters (614 cubic feet) |
| Free internal volume | 5.5 cubic meters (194.15 cubic feet) (14.5 cubic meters/511.85 cubic feet for storage of cargoes) |
| Habitable volume | 5.85 cubic meters (207 cubic feet) |
Diagrams
- MIM-1 (external link, 211 KB). Page illustration from the Reference Guide to the International Space Station PDF.
- MIM-1 (67 KB)
- SPACEHAB MIM-1: 1 (83 KB), 2 (72 KB) (via Hyperbola blog)
- Mini-Research Module 1 (From the NASA PDF document “Head of Russian Federal Space Agency ISS Program International Cooperation, Paris, June 17, 2009” [500 KB])
- RIAN: infographic
- Space.com: infographic (112 KB)
- STS-132 Press Kit: MIM-1 (65 KB)
Links
- Energiya MIM-1 preflight reports: 18/8/2009, 24/8/2009, 28/8/2009, 31/8/2009, 3/9/2009, 7/9/2009, 5/3/2010, 22/4/2010
- NASA:
- STS-132 Atlantis mission page (Rassvet is described in the STS-132 Press Kit downloadable from that page)
- A New “Dawn” in Space
- NASASpaceflight.com: Docking Cargo Module (module now renamed MIM-1) and Russian segment threads
- Russian Space Web: Mini-Research Module 1 (MIM1) Rassvet (MRM-1)
- SPACEHAB: “SPACEHAB To Support Pre-Launch Preparations For Russian Module” (MIM-1), 5 January 2009
- TsUP: Малый исследовательский модуль «Рассвет» (МИМ1)
Related page: ISS overview



