Technical Research on ISS Russian Segment

Experiment DHL-G

DHL-G experiment is included in the research program conducted onboard the ISS Russian Segment by spaceflight participant Richard Garriott within the framework of the GTA project.


Demonstration of the energy conservation law in microgravity environment, taking the movement of two objects as an example.


Recording on video the demonstration of the energy conservation law in microgravity environment on ISS RS.

Science Hardware Used:

  • DHL kit, includes the equipment for the demonstration of energy conservation law when potential energy is converted into kinetic energy.

DHL demonstration equipment ready-assembled

The demonstration equipment includes:

  • trolley;
  • rails with fasteners;
  • pusher with a protective cover.

The trolleys are two identical structures made of polycarbonate and of the same mass.
The rails are two aluminum guides shaped into a loop.
The pusher with a protective cover is a starting device designed to set into motion both trolleys simultaneously by giving them a push with a force of 4 kg.

Flight Equipment Used:

  • Nikon D3 camera;
  • Sony HVR-Z7 video camera for taking accompanying photos and videos.

Experiment Results:

Photographic and video information recorded on a flash video card and a video cassette.

ISS Crew