What is the mass of an astronaut who oscillates with a period of 215 s when sitting in the chair. An astronaut uses a body mass measurement device to measure her mass. An astronaut uses a body mass measurement device bmmd to determine her mass. Also using the motion of a spring. The empty chair oscillated with a period of 0889s. The other device is russias body mass measurement device bmmd seen being demonstrated by reid wiseman in this vine he posted last october.

The astronaut rides the bmmd somewhat like a pogo stick and the oscillation of a spring is used to measure mass. This paper describes concept of space scale and its accuracy estimation by ground model test. We propose a new device space scale with laser interferometry acceleration measurement and an inline force sensor with a bungee cord. What is the astronauts mass given that the force constant of the bmmd is 2600 nm and the period of oscillation is 085 s. Flickrpbppnwe andré kuipers at astroandre february 9 2012 the device andré is using is called the space linear acceleration measurement device or slammd pronounced slam dee for shortwhy is measuring body mass needed in space. The proposed space balance is based on the levitation mass method lmm that was previously proposed and de veloped by the first author.

Request pdf instrument for measuring astronaut body mass space scale a design of the body mass measurement device bmmd was proposed to obtain a lightweight instrument with sufficient accuracy. The body mass measurement device on skylab a 1970 rm s space station had a spring constant of 606 nm. We also measure our body mass in the columbus module. There are fundamental physical difficulties as well as program management issues. If the force constant of the spring is 2200 nm her mass is 65 kg and the amplitude of her oscillation is 16 cm what is her maximum speed during the measurement. Tronaut body mass measurement10 the tensile force of a rubber cord is applied to the astronaut under test and the force is measured using a force transducer.

See the discussion on page 427 for more details on the bmmd solution 76 gpstep 1 of 4in this problem an. Although inception of the measurement of astronaut body mass measurement was as old as skylab era progress in the field has not been as expected. Astronauts measure their mass by measuring the period of oscillation when sitting in a chair connected to a spring. New mass measurement systems with the current sensor technologies should be prepared and the new sensor system could be expanded for drop tower in space. The body mass measurement device on skylab a 1970s space station had. In this method the inertial force.

In the current space program astronaut body mass onboard spacecraft including the international space station iss is measured with spring mass device.

Gallery of Astronaut Body Mass Measurement