sts-50

STS-50 payload

Experiment on board United States Microgravity Laboratory USML-1 (STS-50) and USML-2 (STS-73) 

STS-50 (U.S. Microgravity Laboratory 1) was a United States Space Shuttle mission, the 12th mission of the Columbia orbiter. Columbia landed at Kennedy Space Center for the first time ever due to bad weather at Edwards caused by the remnants of Hurricane Darby.
The U.S. Microgravity Laboratory 1 was a spacelab mission, with experiments in material science, fluid physics and biotechnology. It was the first flight of a Space Shuttle with the Extended Duration Orbiter (EDO) hardware, allowing longer flight durations.
Primary payload, U.S. Microgravity Laboratory-1 (USML- 1), made its first flight; featured pressurized Spacelab module. USML-1 first in planned series of flights to advance U.S. microgravity research effort in several disciplines. Experiments conducted were: Crystal Growth Furnace (CGF); Drop Physics Module (DPM); Surface Tension Driven Convection Experiments (STDCE); Zeolite Crystal Growth (ZCG); Protein Crystal Growth (PCG); Glovebox Facility (GBX); Space Acceleration Measurement System (SAMS); Generic Bioprocessing Apparatus (GBA); Astroculture-1 (ASC); Extended Duration Orbiter Medical Project (EDOMP); Solid Surface Combustion Experiment (SSCE).
Secondary experiments were: Investigations into Polymer Membrane Processing (IPMP); Shuttle Amateur Radio Experiment II (SAREX II); and Ultraviolet Plume Instrument (UVPI).

Very similar to the A-B Emblem souvenir version.

STS-50 (U.S. Microgravity Laboratory 1) was a United States Space Shuttle mission, the 12th mission of the Columbia orbiter. Columbia landed at Kennedy Space Center for the first time ever due to bad weather at Edwards caused by the remnants of Hurricane Darby.
The U.S. Microgravity Laboratory 1 was a spacelab mission, with experiments in material science, fluid physics and biotechnology. It was the first flight of a Space Shuttle with the Extended Duration Orbiter (EDO) hardware, allowing longer flight durations.
Primary payload, U.S. Microgravity Laboratory-1 (USML- 1), made its first flight; featured pressurized Spacelab module. USML-1 first in planned series of flights to advance U.S. microgravity research effort in several disciplines. Experiments conducted were: Crystal Growth Furnace (CGF); Drop Physics Module (DPM); Surface Tension Driven Convection Experiments (STDCE); Zeolite Crystal Growth (ZCG); Protein Crystal Growth (PCG); Glovebox Facility (GBX); Space Acceleration Measurement System (SAMS); Generic Bioprocessing Apparatus (GBA); Astroculture-1 (ASC); Extended Duration Orbiter Medical Project (EDOMP); Solid Surface Combustion Experiment (SSCE).
Secondary experiments were: Investigations into Polymer Membrane Processing (IPMP); Shuttle Amateur Radio Experiment II (SAREX II); and Ultraviolet Plume Instrument (UVPI).

Unlike the A-B Emblem version, this patch has a blue border that is stiched all around the border. 

STS-50 (U.S. Microgravity Laboratory 1) was a United States Space Shuttle mission, the 12th mission of the Columbia orbiter. Columbia landed at Kennedy Space Center for the first time ever due to bad weather at Edwards caused by the remnants of Hurricane Darby.
The U.S. Microgravity Laboratory 1 was a spacelab mission, with experiments in material science, fluid physics and biotechnology. It was the first flight of a Space Shuttle with the Extended Duration Orbiter (EDO) hardware, allowing longer flight durations.
Primary payload, U.S. Microgravity Laboratory-1 (USML- 1), made its first flight; featured pressurized Spacelab module. USML-1 first in planned series of flights to advance U.S. microgravity research effort in several disciplines. Experiments conducted were: Crystal Growth Furnace (CGF); Drop Physics Module (DPM); Surface Tension Driven Convection Experiments (STDCE); Zeolite Crystal Growth (ZCG); Protein Crystal Growth (PCG); Glovebox Facility (GBX); Space Acceleration Measurement System (SAMS); Generic Bioprocessing Apparatus (GBA); Astroculture-1 (ASC); Extended Duration Orbiter Medical Project (EDOMP); Solid Surface Combustion Experiment (SSCE).
Secondary experiments were: Investigations into Polymer Membrane Processing (IPMP); Shuttle Amateur Radio Experiment II (SAREX II); and Ultraviolet Plume Instrument (UVPI).

The white backing of the STS-50 patch might be one of the most distinctive of all of A-B Emblem's shuttle patches.

The objective of the Smoldering Combustion in Microgravity (SCM) experiment is to investigate the ignition and propagation of smoldering combustion in microgravity, in both quiescent and convective environments. Smoldering combustion is a nonflaming reaction that spreads through the interior of porous combustible materials. A burning cigarette is an excellent everyday example of smoldering combustion. Flown as part of USML-1 on STS-50

Payload on STS STS-45 STS-50 STS-65 (USML)

The Drop Physics Module has been developed so scientists can study several fluid physics phenomena: a simple surface, such as the sphere formed by a liquid drop in the absence of gravity; how a drop reacts to different forces (drop dynamics); and how surfaces and compound drops - a drop of one liquid surrounding a drop of a different liquid - interact.
Payload on STS-50, Spacelab/USML-1

Payload on STS-50 and STS-73 on board USML-1 (U.S. Microgravity Laboratory) and USML-2 respectively.

The goal of the EDOMP is to maintain crew health and safety during 13- to 16-day missions aboard the Space Shuttle. A
series of investigations has been designed to assess the medical status of the crewmembers and the environment where they
work. One EDOMP investigation tests a treatment to counteract negative cardiovascular responses, and the other monitors
the Spacelab environment to determine the growth of fungi and bacteria over the course of the mission.

After ingesting salt tablets and water, crewmembers are exposed to negative pressure in the LBNP device. This treatment
reduces cardiovascular deconditioning upon return to earth.