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dsa_launch_procedure

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DSA Launch Procedure

Job Descriptions

Many individuals contribute to the safe and successful launch of DSA Spacecraft. The official job titles and descriptions of each participant are listed below. If there is a shortage of manpower, one person can assume several roles.

Station
AbbrTitle
LPSLaunch processing system coordinator
SURGEONFlight surgeon
SROSuperintendant of range operations
LRDLanding and recovery director
SAFETYSafety console coordinator
CTCCapsule test conductor
TBCTank/booster test conductor
CGLSGround launch sequencer engineer
LDLaunch director
MINERVASpacecraft pilot
  • Launch processing system coordinator (LPS)
    1. Ensure astronaut is fully-prepared for launch
    2. Store any astronaut personal effects
    3. Escort astronaut to the vehicle
    4. Ensure astronaut maintains proper position for launch
  • Flight Surgeon (SURGEON)
    1. Administer pre-launch physical
    2. Monitor astronaut health during flight
    3. Provide any post-landing treatment required
  • Superintendant of range operations (SRO)
    1. Perform pre-launch range survey for hazards
    2. Control access to launch pad once fueling has commenced
    3. Ensure personnel are clear from downrange before countdown starts
    4. Visual tracking of astronauts during launch and re-entry
  • Landing and recovery director (LRD)
    1. Select preferred landing site
    2. Ensure landing site is free of hazards
    3. Retrieve astronaut after landing
  • Safety console coordinator (SAFETY)
    1. Before fueling operations begin:
      1. Ensure master power is off/safe
      2. Ensure all flight controller hold switches are set to hold
    2. Ensure that master power switch remains on during all stages of flight
    3. Turn master power off only…
      • … at the successful conclusion of each flight
      • … if the launch vehicle threatens populated areas; OR
      • … if a loss-of-astronaut accident occurs
  • Capsule test conductor (CTC)
    1. Before fueling, ensure:
      1. Pilot's Arm Switch is safe
      2. Capsule compression piston is retracted
    2. After fueling, verify that
      1. TNT distributed to all dispensers
      2. Only one TNT has been placed in each dispenser
  • Tank/booster test conductor (TBC)
    1. Craft and handle TNT
    2. Load TNT into rocket dispensers
    3. After fueling, ensure that only one TNT has been placed in each dispenser
    4. Close rocket access ports prior to launch
  • Ground launch sequencer engineer (CGLS)
    1. Start the countdown
    2. Read each countdown milestone over the radio as it passes
  • Launch director (LD)
    1. Coordinate between astronauts, flight controllers, and other range personnel
    2. Ensure launch procedure is followed
    3. Poll flight controllers for readiness prior to countdown start
  • Spacecraft pilot (MINERVA)
    1. Name your space vehicle
    2. Show up on time
    3. Don't be too drunk to fly
    4. Assume the position
    5. Try not to die. It looks bad for the program

Astronaut Training

One to two days before launch, astronauts should report to the SpaceHab for astronaut training. LPS is responsible for conducting the training. The Quarantine Area houses a complete mock-up of the Minerva space capsule. Astronauts will learn:

  • The correct position for launch
  • How to use the Pilot's Arm Switch
  • How to receive and deploy the Parachute
  • How to navigate to a safe landing

The DSA requires that all astronauts be in top physical condition prior to departure. SURGEON will administer a complete physical and ensure that the astronaut is current on all their immunizations.

At the conclusion of training, the astronaut will name their spacecraft. This is how controllers will address the spacecraft during the flight.

Range Survey

The next step to a successful launch is a range survey. Although the DSA's missile range is built in a remote, unpopulated area, wildlife may still pose a threat. Errant boaters need to be kept out of the blast hazard areas. It is the responsibility of SRO to ensure that nothing threatens, or is threatened by, the launch.

At the beginning of active operations, SRO will travel to the pad by boat and conduct a range survey. Any abnormalities should be reported and corrected. SRO will remain at or near the pad until boarding is complete, monitoring the area for hazards.

Landing Site Selection

Although the SRO is responsible for the range as a whole, the LRD is responsible for the selection and maintenance of a safe landing site. Landing sites must be in a large body of water which is at least three meters deep throughout. Landing sites must be free of debris and tall obstructions in any direction. Care should be taken that there are no shallow areas.

When descending under parachute, the Minerva space capsule has the following flight characteristics

Sink rate8.7 m/s
Glide ratio (horz:vert)1:2.1
Preferred deployment altitude400 m

Given these characteristics, landing sites should be within about 160 meters of the pad—but are frequently much closer. Assuming that the spacecraft ascends straight up, calculate the deployment altitude and direction of travel after deployment which will bring the capsule back to the landing site. Leave plenty of margin. This information should be communicated to the mission planners and MINERVA.

Control Safety Check

Before fueling begins, SAFETY will ensure that the controls in the Launch Control Center (LCC) are correctly set in the safe position. SAFETY must check that:

  • The master power switch is off / SAFE.
  • The light above the master power switch is not illuminated.
  • The countdown status indicator in the LCC is RED
  • The beacon at the launch pad is RED

The master power switch must remain off for the duration of fueling. SAFETY should also toggle all flight controller hold switches to the hold position. When the switches are in the hold position, the status torches above each workstation will illuminate red.

Fueling

Fueling the launch vehicle is a high-risk activity. Read carefully.

CTC and TBC are responsible for fueling the launch vehicle. Because this is a high-risk activity, they will check each others' work. Once SAFETY and SRO have given the go-ahead, fueling may commence.

  1. TBC will craft a total of twelve (12) units of TNT.
  2. CTC and TBC will verify that the beacon at the launch pad is RED, then proceed to the launch pad.
  3. CTC will ascend the launch pad and enter the capsule. CTC will verify
    1. that the Pilot's Arm Switch is in the SAFE position. Lamps on the capsule's control station will be extinguished; AND
    2. that the capsule compression piston is retracted. When looking down at the dispensers, a vertical stack of three dispensers should be visible. If only one ring of dispensers is visible, halt the process at once!
  4. Once these checks are complete, BTC is clear to begin loading. BTC will access the launch vehicle's fueling door. The fueling door is located on Swing Arm #2, which is the second of the four swing arms up the tower. The fueling door may be opened with a lever.
  5. The interior of the launch vehicle has two ladders. Each ladder leads to its own set of TNT dispensers. BTC will climb to the top of each ladder in turn.
    1. At the top of each ladder is a small alcove in which to stand. Six dispensers are accessible from this location.
    2. BTC must load one (1) unit of TNT into each dispenser
  6. After BTC has completed fueling the dispensers, CTC will check that each of the twelve dispensers has exactly one unit of TNT loaded into it. No other items should be placed into dispensers!
  7. When these tasks are complete, CTC and BTC will leave the interior of the launch vehicle. BTC will close the fuel door, and CTC will check that it has been closed.

CTC and BTC should return to the Launch Control Center when fueling is complete.

Polling Stations

During polling, each launch controller should give a “go” or “no-go” for launch. Upon giving the “go,” the corresponding hold switch should be moved to the down-and-off position. The red light above the switch will extinguish. If the controller is not physically present in the control room—i.e., they are occupied elsewhere—then an adjacent controller will operate the lever.

The LD shall poll the following stations, in order:

  1. MINERVA
  2. CGLS
  3. SRO
  4. LRD
  5. SAFETY
  6. TBC
  7. CTC
  8. LPS
  9. LD

If all flight controllers are “go” and no red lights are visible above the controller desks, then LD should request that CGLS commence the countdown. CGLS will then:

  1. Provide a pre-count to initiate the countdown on his/her “mark.”
  2. Press the green “GO” button to initiate the countdown.
  3. Read the countdown events listed in the section below, as they occur.

Countdown Events

CGLS should read the countdown aloud. When reading the countdown, read the times and milestones from the following table. Both should be read as lights are extinguished. For example, read entry for “Ground launch sequence start” immediately after the first lamp is extinguished.

Lamps Lit T± (MM:SS)Milestone
15 T- 01:50Countdown initiated
14 T- 01:43Ground launch sequence start
13 T- 01:36
12 T- 01:29
11 T- 01:22
10 T- 01:15Main engine gimbal test
9 T- 01:08
8 T- 01:01
7 T- 00:54Internal power transfer
6 T- 00:47
5 T- 00:40
4 T- 00:33Auto-sequence start
3 T- 00:26
2 T- 00:19Main engine start
1 T- 00:12
0 T- 00:05Launch commit
T+ 00:00TNT Ignition
T+ 00:04Lift-off
T+ 01:04Main engine cut-off

At any time prior to main engine start, at T- 00:19 seconds, any controller may request that the countdown be held by

  1. saying “HOLD COUNTDOWN;” and
  2. moving their countdown hold switch to the up-and-on position.

CGLS should acknowledge that the countdown has been held.

After main engine start, all holds will be considered a mission ABORT. To re-start from an abort condition, the master power must be cycled off, then back on again, and the full countdown must be started from the top (i.e., T- 01:50).

After launch commit, no abort is possible, and the flight must continue.

In the event of a hold or abort, MINERVA should rotate the Pilot's Arm Switch to the down-and-off position. This action will inhibit and prevent TNT ignition, but it will not hold the countdown. In the event that MINERVA requests a countdown hold, CGLS is responsible for holding the countdown.

dsa_launch_procedure.1471064637.txt.gz · Last modified: 2016/08/13 05:03 by ch1b1