| タイトル | The Plant Research Unit (PRU): A Plant Habitat for ISS |
| 著者（英） | Morrow, Robert; Reiss-Bubenheim, Debra; Schaefer, Ronald L. |
| 著者所属（英） | NASA Ames Research Center |
| 発行日 | 2003-01-01 |
| 言語 | eng |
| 内容記述 | The Plant Research Unit (PRU) is one of six life science habitats being developed as part of the Space Station Biological Research Program. The PRU is designed for plant experiments in microgravity and will utilize the ISS Centrifuge Facility to provide gravity levels between microgravity and 2g. The PRU will provide and control all aspects of a plant's needs in a nearly closed system. In other words, the shoot and root environments will not be open to the astronaut's environment except for experiment maintenance such as planting, harvesting and plant sampling. This also means that all lighting, temperature and humidity control, watering, and air filtering and cleaning must be done within strict limitations of volume, weight, power, and crew time while at the same time providing a very high of reliability and a service life in excess of 10 years. The PRU will contain two plant chambers 31.5 cm tall, each with independent control of temperature, humidity, light level and photoperiod, CO, level, nutrient and water delivery, and video and data acquisition. The PRU is currently in the preliminary design phase and a number of subsystem components have been prototyped for testing, including the temperature and humidity control systems, the plant chambers, the LED lighting system, the atmospheric control system and a variety of nutrient delivery. The LED prototype provides independent feedback control of 5 separate spectral bands and variable output between 0 and 3000 mumo1m(exp -2)s(exp -1). The water and nutrient delivery system (WNDS) prototypes have been used to test particulate based, thin film, and gel-based WNDS configurations. |
| NASA分類 | Spacecraft Design, Testing and Performance |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/333044 |
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