Eva Report
03/20/2013
Saul Trujillo
Eva Number:
7
Eva Date:
Time Slot:
unknown
Purpose:
EVA 7A
Objective/Procedures: Four crewmembers evaluated transportation of
injured patient with a two-wheel stretcher (in parallel) a distance of
50 meters in rough terrain.
EVA 7B
Objective/Procedures: Because of the unsuccessful configuration in EVA
7A, the crew decided to re-secure all the connections, especially the
one for the right wheel. Additionally, the crew moved the parallel
two-wheel configuration closer to the center to even out the loads for
the front and back EFRT members. The four crewmembers then proceeded
to evaluate the transportation of the injured patient with this
updated configuration a distance of 50 meters in rough terrain.
EVA 7C
Objective/Procedures: Four crewmembers evaluate transportation of
injured patient with a two-wheel stretcher (in parallel) a distance of
50 meters in medium terrain.
EVA 7D
Objective/Procedures: Four crewmembers evaluate transportation of
injured patient with a two-wheel stretcher (in parallel) a distance of
50 meters in flat terrain.
Narrative:
EVA 7A – Two-Wheels (Parallel) EVA Emergency Transportation – Rough Terrain
Participants:
• Injured EVA crewmember: Andrea Lazarte (EV1)
• EVA First Responder Team (EFRT): Monica Abarca (EV6), Humberto De
las Casas (EV5), Eiji Onchi (EV2), Saul Trujillo (EV4)
• Out-of-simulation: Alex Diaz
Timeline:
• 12:48pm – EFRT receives emergency call
• 12:49pm – EFRT arrival at emergency site
• 12:51pm – EV1 placed on stretcher in prone position
• 12:52pm – EFRT (4 crewmembers) begins transportation
• 12:56pm – EFRT team arrives at pressurized rover
Results: There were two major issues: 1) Wheel Turning – one of the
tires kept rotating ~20 degrees as a result of a faulty coupler
connection (i.e. the coupler on the right wheel was not secured, so it
caused the right wheel to rotate inward). One of the EFRT members had
to keep kicking one of the wheel pegs to straighten the wheel, which
caused the transportation time to be longer. 2) Location of Wheels –
The parallel set of wheels were off center (directly underneath the
PLSS; closer to the back). The location of the wheels created less
load for the person on the back, but more load for the person on the
front. The simulated patient noted that the transportation was
uncomfortable, especially when the rescuer kicked the peg to realign
the tire.
EVA 7B – Two-Wheels (Parallel) EVA Emergency Transportation – Rough Terrain
Participants:
• Injured EVA crewmember: Andrea Lazarte (EV1)
• EVA First Responder Team (EFRT): Monica Abarca (EV6), Humberto De
las Casas (EV5), Eiji Onchi (EV2), Saul Trujillo (EV4)
• Out-of-simulation: Alex Diaz
Timeline:
• 02:02pm – EFRT receives emergency call
• 02:03pm – EFRT arrival at emergency site
• 02:05pm – EV1 placed on stretcher in prone position
• 02:05pm – EFRT (4 crewmembers) begins transportation
• 02:07pm – EFRT team arrives at pressurized rover
Results: EFRT noted stretcher pitch control was much better with
wheels in the middle. Yaw control (rotation) was easy, but not as easy
with one wheel in the middle. Patient noted there was some rolling,
but less than with one wheel. Two wheels improved the stability on the
rolling axis. Transportation was a success.
EVA 7C – Two-Wheels (Parallel) EVA Emergency Transportation – Medium Terrain
Participants:
• Injured EVA crewmember: Andrea Lazarte (EV1)
• EVA First Responder Team (EFRT): Monica Abarca (EV6), Humberto De
las Casas (EV5), Eiji Onchi (EV2), Saul Trujillo (EV4)
• Out-of-simulation: Alex Diaz
Timeline:
• 02:26pm – EFRT receives emergency call
• 02:27pm – EFRT arrival at emergency site
• 02:29pm – EV1 placed on stretcher in prone position
• 02:29pm – EFRT (4 crewmembers) begins transportation
• 02:30pm – EFRT team arrives at pressurized rover
Results: EFRT noted significant reduced roll issues; pitch was
acceptable, and yaw was very good (i.e. like having one wheel).
EVA 7D – Two-Wheel (Parallel) EVA Emergency Transportation – Flat Terrain
Participants:
• Injured EVA crewmember: Andrea Lazarte (EV1)
• EVA First Responder Team (EFRT): Monica Abarca (EV6), Humberto De
las Casas (EV5), Eiji Onchi (EV2), Saul Trujillo (EV4)
• Out-of-simulation: Alex Diaz
Timeline:
• 02:49pm – EFRT receives emergency call
• 02:50pm – EFRT arrival at emergency site
• 02:51:00pm – EV1 placed on stretcher in prone position
• 02:51:20pm – EFRT (4 crewmembers) begins transportation
• 02:51:50pm – EFRT team arrives at pressurized rover
Results: EFRT noted this was the easiest terrain to maneuver the
stretcher in; no issues with yaw, pitch or roll axes. Patient noted
this terrain was very comfortable.
Eva Depart Time:
12:30
Check In Time One:
12:48
Check In One E:
520190
Check In One N:
4251680
Check In Note One:
Check In Time Two:
14:02
Check In East Two:
520190
Check In Note Two:
Check In Time Three:
14:26
Check In East Three:
519904
Check In North Three:
4251930
Check In Note Three:
Check In Time Four:
14:49
Check In East Four:
519100
Check In North Four:
4251495
Check In Note Four:
Eva Return Time:
13:52
Wp1 E:
520190
Wp1 N:
4251680
Waypoint1arrive Time:
12:48
Eva W P1depart Time:
12:56
Wp1 Find:
Wp2 E:
520190
Wp2 N:
4251680
Eva W P2arrive Time:
14:02
Eva W P2depart Time:
14:07
Wp2 Find:
Wp3 E:
519904
Wp3 N:
4251930
Eva W P3arrive Time:
14:26
Eva W P3depart Time:
14:30
Wp3 Find:
Wp4 E:
519100
Wp4 N:
4251495
Eva W P4arrive Time:
14:49
Eva W P4depart Time:
14:51
Waypoint Four Finding:
Waypoint Five Easting:
Waypoint Five Northing:
Waypoint Five Arrive Time:
Waypoint Five Depart Time:
Waypoint Five Findings: