# Presentation: 072890

## III. Solar Sail Flight System Technology

**Session Facilitator:**
**Gregory P. Garbe**

## Outline

**Executive Summary**
**Solar Sail Capabilities to be Validated by ST9**
**Solar Sail TCA/Mission-Level Validation Objectives for ST-9**

## Executive Summary

**Workshop Addresses Following Technology Areas**
**Sail system design metrics & scaling**
**Controlled sail deployment in an orbital/space environment**
**In-space characteristics of the deployed sail and structure**
**Sail system design metrics & scaling **
**Controlled sail deployment in an orbital/space environment**
**In-space characteristics of the deployed sail and structure**
**Sailcraft attitude control**
**System propulsion performance**
**Design approach and processes**
**Sessions Topics**
**Future space science mission needs**
**Desired workshop products**
**Technology splinter session discussions**
**Needs/potential capabilities assessments**
**Splinter Session Topics**
**Modeling and Simulation of Deployed Solar Sails**
**Solar Sail Material Qualities and Environmental Characteristics**
**Pointing, Control, and Navigation Technology for Solar Sails**
**Solar-Sail Packaging Deployment, and Structure Technologies**

## Executive Summary (continued)

**Key Observations and Recommendations**
**Need the corroboration between quantitative models and ground testing for all major subsystem**
**Scale of validation flight needs to be no smaller then 1/3 of future science mission**
**Two most important Solar Sail Figure of Merits are:**
- Root Sail Area (LRSA):
- Square root of sail’s reflective area
- Sail system areal density (S):
- Mass sail system (e.g., membrane, trusses, GNC, Diagnostics, etc.) divided by reflective area
**Recommendations for ST-9 Flight Experiment**
**Need comprehensive diagnostic package that quantitatively measures the system performance and interaction with its environment**
**L****RSA**** should be  minimum of 50 m**

## Solar Sail Capabilities to be Validated by ST9 (1 of 2)

## Solar Sail Capabilities to be Validated by ST9 (2 of 2)

## Solar Sail Technology & Mission Implementation Roadmap

**2009****             **

**2003****             **

**2005****       **

**2007****            **

**2011****             **

**NMP Gossamer**

**1 AU Tech Development**

**1 Au **
**Mission       Validation**

**2013****             **

**2015****             **

**AEC Able Ground Demo **
**L’Garde Ground Demo **
**JPL Integrated s/w Toolkit**

**Cycle 1 NRA**

**In-Space **
**Propulsion**
**Program**

**Cycle  2 NRA**

**High Fidelity Models **
**Diagnostic System **
**1 Au Env. Testing**

**Cycle 3 NRA**

**1 Au GNC HWiL**
**1Au Architecture**
**Lightweight Bus**

**NASA Technology**** ****Development**

**Cycle 4 NRA**

**Cycle 5 NRA**

**Cycle 6 NRA**

**.25 Au GNC HWiL**
**.25 Au Architecture**

**Nano Diagnostic System **
**0.25 Au Ground Demo**

**0.25 Au GNC Software Development**
**0.25 Au Subsystem Development**

**1 AU **
**Science**
**Missions**

**.25 AU Tech Development**

**.25 Au **
**Mission       Validation**

**.25 AU**
** ****Science**
**Missions**

**Particle Acceleration Solar Orbiter **
***Titan Explorer ***
***Saturn Ring Observer****** ***

**NOAA/USAF **
**MISSIONS**
**Enabled by Solar Sail Propulsion**

**Geostorm 1 (0.98 AU)**
**Pole Sitter 1 (210 R****E**** X 485 R****E**** )**

**L1 - Diamond  **
**Solar Polar Imager**
***CSSR***

**Launch 2007 - 2010**

**NASA **
**MISSIONS**
**Enabled/Enhanced  by Solar Sail Propulsion**

**Launch 2009 - 2012**

**Launch 2013 - 2015**

**Launch 2011 - 2013**

**Geostorm 2 (0.945 AU)**
**Pole Sitter 2 (140 R****E**** X 323 R****E**** )**

## Notes: 	1) ISP Ground Demo T assumes non-sail system mass of 10 kg

- Notes: 	1) ISP Ground Demo T assumes non-sail system mass of 10 kg
- 	2) Solar Sail Propulsion is being studied to determine its viability to 	  		SSE Missions

- Solar Sail Figures of Merit required capabilities for Science Missions

## Solar Sail TCA/Mission-Level Validation Objectives for ST-9

**Sail Validation Objectives**
**Validate sail system design metrics & scaling **
**Validate controlled sail deployment in an orbital/space environment**
**Validate in-space characteristics of the deployed sail and structure**
**Validate sailcraft attitude control**
**Validate system propulsion performance**
**Validate design approach and processes**

## Objective 1. Validate Sail System Design Metrics and Scaling

- Splinter Session A4
- Solar Sail Packaging, Deployment, and Structure Technologies

## Objective 2. Validate Controlled Sail Deployment in an Orbital/Space Environment

- Splinter Session A4
- Solar Sail Packaging, Deployment, and Structure Technologies

## Objective 3. Validate In-Space Characteristics of the Deployed Sail and Structure

- Splinter Session A2
- Solar Sail Material Qualities and Environmental Characteristics

## Objective 3. Validate In-Space Characteristics of the Deployed Sail and Structure

- Splinter Session A4
- Solar Sail Packaging, Deployment, and Structure Technologies

## Objective 4. Validate Sailcraft Attitude Control

- Splinter Session A4
- Solar Sail Packaging, Deployment, and Structure Technologies

## Objective 5. Validate System Propulsion Performance

- Splinter Session A1-S2
- Modeling and Simulation of Deployed Solar Sails

## Objective 5. Validate System Propulsion Performance

- Splinter Session A4
- Solar Sail Packaging, Deployment, and Structure Technologies

## Objective 6. Validate Design Approach and Processes

- Splinter Session A1-S2
- Modeling and Simulation of Deployed Solar Sails

- Splinter Session A1-S1
- Modeling and Simulation of Deployed Solar Sails

## Objective 6. Validate Design Approach and Processes

**Objective 6. Validate Design Approach ****and Processes**

- Splinter Session A1-S3
- Modeling and Simulation of Deployed Solar Sails

- Splinter Session A1-S4
- Modeling and Simulation of Deployed Solar Sails

## Objective 6. Validate Design Approach and Processes

- Splinter Session A4
- Solar Sail Packaging, Deployment, and Structure Technologies

## Objective 6. Validate Design Approach and Processes

- Splinter Session A2
- Solar Sail Material Qualities and Environmental Characteristics

## Objective 6. Validate Design Approach and Processes

**Objective 6. Validate Design Approach ****and Processes**

- Splinter Session A2
- Solar Sail Material Qualities and Environmental Characteristics