SOW 125 eLib.pdf

Statement of Work Task: SSMO Navigation Operations Task Order: 125 Task Modification: 6

I. Summary of Changes in this Task Modification

Extended Period of Performance (PoP) to October 31st, 2024. Removed SOHO end-of-life study and corresponding deliverable under Subtask 125.1 (completed under Mod 5). Removed HESSI and added Van Allen Probes A & B to list of missions for lifetime analyses.

II. Summary of Work This statement of work describes the navigation and maneuver support requirements within the Flight Dynamics Facility (FDF), in support of Space Science Mission Operations (SSMO) at NASA Goddard Space Flight Center (GSFC).

The contractor shall provide routine and contingency operational navigation services for the missions identified in Section IV. These services shall include operations planning, mission analysis, orbit determination (OD) and prediction, acquisition data generation, trajectory product support, tracking data evaluation, navigation and tracking systems engineering, and libration-point orbit maneuver planning support. Specific requirements for this task are currently specified in a variety of mission and institutional documentation.

This task is required to work closely with other Flight Dynamics Support Services (FDSS) III tasks, the SSMO mission operations teams and management, and the NMDB. Task personnel shall interface directly with project personnel, flight operations team members, other contractors, tracking networks, and others as needed. The contractor shall support the SSMO Flight Dynamics Lead, FDF Operations Director, the Deputy FDF Operations Director, and/or the Task Monitor (TM) in weekly meetings, ad-hoc discussions, or other methods as necessary. Task personnel are expected to be proactive in reporting anomalies and other errors to the appropriate parties and to prepare and support project reviews as needed or requested. Costs associated with each mission and/or effort shall be tracked as separate line items according to the subtasks identified in Section IV below. The contractor shall prepare conference papers or other documentation as appropriate to promote SSMO missions and center navigation capabilities. Task personnel shall prepare and maintain databases, reports, and/or other mechanisms as needed to support SSMO customers.

III. Period of Performance The period during which the work for this task shall be performed is between November 1st, 2019 and October 31st, 2024.

IV. Task Description

The contractor shall provide routine and contingency navigation support for select on-orbit space science missions that are part of the SSMO organization. These missions include Solar and Heliospheric Observatory (SOHO), Solar Dynamics Observatory (SDO), Solar TErrestrial RElations Observatory (STEREO), Lunar Reconnaissance Orbiter (LRO), Transiting Exoplanet Survey Satellite (TESS), Magnetospheric Multiscale (MMS) and Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED). This support includes activities such as navigation product generation, documentation review, requirements development, and analysis to improve the quality of navigation support to the missions. The contractor shall evaluate Deep Space Network (DSN) tracking data for the benefit of these missions. Support shall be provided for special operations scenarios or analysis as directed by the SSMO Flight Dynamics Lead, SSMO management, or the mission operations teams.

Additionally, the contractor shall provide lifetime predictions for select on-orbit satellites. The list of satellites included in these reports is determined by the TM and currently include AIM, TRACE, SWIFT, SWAS, TIMED, GLAST/Fermi, FAST, FUSE 1, GALEX, and Van Allen Probes A & B. Reports shall be generated on the schedule below. Contents of the report shall be consistent with previous lifetime reports produced by FDF personnel.

Baseline Predicted Mission Lifetime

Prediction Frequency

>2 years Once/year

6 to24 months Once/month

<6 months Once/week

Subtask 1: Solar Heliospheric Observatory (SOHO) Task Scope: Navigation operations for the SOHO mission.

Technical Requirements: The contractor shall provide monthly operational OD and tracking data evaluation for the SOHO spacecraft. Specific navigation products include osculating elements and ground station view period reports. In addition, the contractor shall provide libration-point maneuver support as need, approximately quarterly. This support includes:

• Monitoring the behavior of the libration-point orbits; performing impulsive delta-v targeting; determining delta-v required for future maneuvers; generating ephemerides as needed.

• Performing maneuver planning using propulsion data received from the mission operations centers; providing command sheets to the projects according to the project’s maneuver schedule in needed formats.

• Computing predicted post-maneuver orbit products reflecting a nominal maneuver;

analyzing various contingency cases and producing corresponding products; monitoring range-rate data during maneuvers to analyze maneuver performance.

• Requesting adequate post-maneuver tracking data for OD; working with other FDF personnel to resolve navigation issues.

• Performing maneuver calibration and computing propellant usage using the appropriate OD solution, attitude orientation, and propulsion system data; working with the mission operations centers to ensure receipt of all needed data.

• Conducting analysis as needed to investigate problems arising from orbit maneuver support and to develop potential maneuver scenarios.

• Preparing post-maneuver reports detailing the maneuver planning, execution and achieved results, including maneuver efficiency and performance.

• Supporting activities such as maneuver trending, product documentation, software or product troubleshooting, anomaly resolution, and special requests.

• Performing mission design analysis as needed to support the project in evaluating changing mission requirements or possible changes to the mission orbit.

Skill Requirements: Proficiency in operational OD, tracking data evaluation, and libration-point maneuver design.

Subtask 2: Solar Dynamics Observatory (SDO) Task Scope: Navigation operations for the SDO mission.

Technical Requirements: The contractor shall provide weekly operational OD and tracking data evaluation for the SDO spacecraft. Specific products include osculating elements, ground station view periods, and Two-Line Elements (TLEs).

Skill Requirements: Proficiency in operational OD and tracking data evaluation.

Subtask 3: Solar TErrestrial RElations Observatory (STEREO) Task Scope: Navigation operations for the STEREO mission.

Technical Requirements: The contractor shall provide bi-weekly operational OD and tracking data evaluation for both STEREO spacecraft.

Subtask 4: Lunar Reconnaissance Orbiter (LRO) Task Scope: Navigation operations for the LRO mission.

Technical Requirements: The contractor shall provide operational OD, tracking data evaluation, and maneuver support for the LRO spacecraft. Specific support tasks include:

• Produce daily OD and delivery products, including both definitive and predictive ephemerides. Products for the LRO Mission Operations Center (MOC) shall be delivered via the CIL. Daily products shall be delivered to the DSN via the SPS portal.

• Update orbit products after spacecraft momentum unloads.

• Support civil servant NMDB personnel in maneuver planning and calibration for both station keeping and eclipse phasing maneuvers.

• Generate and deliver monthly OD trending reports, including definitive-predictive overlaps.

Specific navigation products include (but are not limited to): timing coefficients, spacecraft ground tracks, ground station view periods, and node, beta angle, and eclipse predicts.

Skill Requirements: Proficiency in operational OD, tracking data evaluation, and maneuver design.

Subtask 5: Transiting Exoplanet Survey Satellite (TESS) Task Scope: Navigation operations for the TESS mission.

Technical Requirements: The contractor shall provide weekly OD and tracking data evaluation for the TESS spacecraft.

Subtask 6: Thermosphere Ionosphere Mesosphere Energetics and Dynamics

(TIMED)

Task Scope: Navigation operations for the TIMED mission.

Technical Requirements: The contractor shall retrieve and propagate TIMED TLEs retrieved from SpaceTrack. The contractor shall generate and deliver TDRS view periods to the project and send TIMED acquisition data to the Space Network in the form of IIRVs. Additionally, the contractor shall produce and deliver lifetime predictions per the schedule outlined in Section III.

Skill Requirements: Proficiency in TLE propagation and lifetime prediction.

Subtask 7: Multi-mission Administration Task Scope: Administrative and technical tasks that are attributable to multiple SSMO missions.

Technical Requirements: The contractor shall perform administrative management, training, and system validation that is specific to the SSMO missions identified above. The contractor shall

The contractor shall staff this work item with the appropriate skill mix and staffing level for the work.

b. Configuration Management

Systems and documents will be covered under the FDF Configuration Management Plan.

c. Facilities

Appropriate IT devices to support the analyses, specification development, and report development are required. It shall be the contractor’s responsibility to provide and set up local workstations and network connections at the contractor’s off-site facilities as required, and to install any required tools and utilities on the contractor’s equipment.

d. Risk Management and Best Practices

The contractor shall manage schedule, cost, and technical risk through monitoring and reporting of progress and performance metrics, identifying issues well in advance of negative consequences, recommending corrective action to the TM, and implementing corrective actions with the compliance of the TM.

VII. Performance Metrics

The work performed for this task will be evaluated by the Technical Monitor based on the technical merit. The timeliness and completeness of operational deliveries for each mission identified in Section IV is the main performance metric for this task. The TM shall develop additional detailed performance metrics that shall reflect the contractor’s performance in meeting research analysis, specific mission requirements, deliverables and delivery schedule, and the contractor’s cost. Technical evaluation of the task performance is a subjective combination of performance metrics, technical quality of deliverables, cost control, significant events, innovations and meeting requirements set forth in the SOW.

VIII. Government Furnished Facilities, Equipment, Software and Other Resources The Government will provide account and passwords to government-furnished workstations where existing versions of various relevant software packages shall be maintained. It shall be the contractor’s responsibility to complete any GSFC required security-related training courses.

IX. Travel There is no non-local travel for this SOW.

X. Work Location This work shall be performed primarily on-site at the Flight Dynamics Facility at Goddard Space Flight Center. In addition, work may be performed in the contractor’s facility for the development of procedures, performing mission analysis, and development and review of documentation.

XI. Reporting Requirements The contractor shall report status in person or via teleconference to the TM, FDF Director, and FDF Deputy Director, or designated alternates on a monthly basis. Reports shall include informal presentation of interim results, status of development activities, and action item status. The contractor shall provide all reports at least one day in advance of the monthly meeting via email, and maintain an email distribution list with the concurrence of the TM FDF Director, and FDF Deputy Director. The contractor shall also support the TM, FDF Director, and FDF Deputy Director in the preparation of status reviews for internal and external funding agencies. The contractor shall comply with any and all additional requests for status meetings and reports. The contractor shall deliver all documents in portable document format (PDF) electronic form to the GSFC NMDB online library, as directed by the

TM.

XII. Security Requirements This task shall comply with IT security requirements as documented in the FDF IT security plan for all systems located in the FDF. FDF systems shall be maintained under the FDF Sustaining Engineering Task. Systems located outside of the FDF shall be covered under the Code 590 security plan and the Code 590 sustaining engineering support or the contractor sustaining engineering support depending on system location.

XIII. Rights REQUIRED: The Contractor shall adhere to the FAR 52.227-17 RIGHTS IN DATA – Special Works (2007).

XIV. References N/A