SPACE LAUNCH SYSTEM

National Aeronautics and Space Administration

www.nasa.gov/sls

5 . . . 4 . . . 3 . . . 2 . . . 1 . . .

Exploration Class Capability

for Deep Space Exploration

Bob HawkinsDeputy Lead Engineer

SLS Integrated Avionics and

Software

https://ntrs.nasa.gov/search.jsp?R=20150021442 2018-06-26T07:14:56+00:00Z

www.nasa.gov/sls8750_JANNAF2015.2

www.nasa.gov/sls

SLS Driving Objectives

8750_JANNAF2015.3

Safe• Human-rated to provide safe and reliable systems

• Protecting the public, NASA workforce, high-value

equipment and property, and the environment from

potential harm

Affordable• Maximum use of common elements and existing

assets, infrastructure, and workforce

• Constrained budget environment

• Competitive opportunities for affordability on-ramps

Sustainable • Initial capability: 70 metric tons (t), 2017–2021

‒Serves as primary transportation for Orion and

human exploration missions

• Evolved capability: 105 t and 130 t, post-2021

‒Offers large volume for science missions and payloads

‒Reduces trip times to get science results faster

‒Minimizes risk of radiation exposure and orbital debris impacts

Designed for BEO Missions of National Importance

www.nasa.gov/sls

• SLS initial

configuration offers

Block 1 to LEO.

• Future

configurations offer

Block 1B and

Block 2 to LEO.

• More mass-to-orbit

means larger

payloads to variety

of destinations.

Medium/Intermediate Heavy Super Heavy

100’

200’

300’

Retired

Retired

ULA

Atlas V 551

SpaceX

Falcon 9

ULA

Delta IV H

NASA

Space Shuttle

NASA

Block 1

NASA

Block 2

NASA

Saturn V

0

20

40

60

80

100

120

140

160

Paylo

ad

Mass (

mT

)

Mass (mT)

SLS Mass-to-Orbit Comparison

0018 IAC_.4

www.nasa.gov/sls

Europa Trajectory Comparison

Launch(6/5/22)

JOI (5/23/24)

DSM(7/10/22)

VGA(5/14/22)

EGA-2(10/24/25)

EGA-1(10/24/23)

Jupiter’sOrbit

JOI (4/4/28)

Launch(11/21/21)

Atlas V 551: VEEGA SLS: Direct

Reduces Transit Time To Europa By Half

0018 IAC_.5

www.nasa.gov/sls

130 t

RS-25 Engines

105 t

Core StageCore Stage

70 t

SLS Block 2 CargoSLS Block 1B Crew SLS Block 1B Cargo

Interstage

Advanced

Boosters

Solid

Rocket

Boosters

Exploration

Upper Stage

105 t

SLS Block 1

Orion

Launch

Abort

System

Launch Vehicle

Stage Adapter

Interim Cryogenic

Propulsion Stage

Exploration

Upper Stage

Cargo FairingCargo Fairing

Interstage

Universal

Stage Adapter

Solid

Rocket

Boosters

Core Stage

SLS Evolution Overview

0018 IAC_.6

www.nasa.gov/sls

SLS Block 1 Key Design Features

SLS

Block 1

Launch Abort System

Launch Vehicle Stage Adapter

Core Stage

RS-25

Engines (4)

Service Module

Orion Stage Adapter

Solid Rocket

Boosters (2)

Interim Cryogenic

Propulsion Stage

Encapsulated Service Module Panels

Crew Module

Orion Multi-Purpose

Crew Vehicle

Spacecraft Adapter

8750_JANNAF2015.7

www.nasa.gov/sls

Five-Segment Solid Rocket Booster

Qualification Motor-1 (QM-1)

March 2015, Promontory, Utah

SRB Forward Skirt Load Test

May 2014, Promontory Utah

Booster Processing,

Promontory, Utah

SRB Aft Skirt Avionics Testing

September 2014

8750_JANNAF2015.8

www.nasa.gov/sls

5-Segment Booster Test Video

www.nasa.gov/sls

RS-25 Core Stage Engine

RS-25 Adaptation Test, Stennis Space Center, January – August 2015

RS-25 Controller

0013_IAC Briefing.10

8750_JANNAF2015.11

www.nasa.gov/sls

Core Stage Progress

Pegasus Barge Renovation Complete

LH2 Dome Assembly at Michoud, July 2015

0013_IAC Briefing.12

LH2 Structural Test Article (STA) Test Stand,

MSFC, August 2015

B-2 Test Stand at Stennis Space Center

www.nasa.gov/sls

SLS MAF/Stages Progress Video

8560 JANNAF

2014_B.Askins.13

www.nasa.gov/sls

Spacecraft/Payload Integration and Evolution

Orion/MSA Mated to Delta IV for EFT-1

November 2014

DCSS for EFT-1

KSC, June 2014

8750_JANNAF2015.14

www.nasa.gov/sls

Systems Engineering & Integration

Booster Separation Tests, LaRC

October 2014

Base Heating Tests CUBRC, Buffalo, New York

January 2015

SMAT Testing, MSFC August 2014

Core Stage

Engine TVC

Actuator Testing

Redstone Test

Center

March 2015

8750_JANNAF2015.15

www.nasa.gov/sls

SLS Avionics Progress

8750_JANNAF2015.16

www.nasa.gov/sls

Where is SLS Avionics Located?

8750_JANNAF2015.17www.nasa.gov/sls

SLS

Block 1

Launch Vehicle Stage Adapter

(Two Cameras for ICPS Separation)

Core Stage Avionics

(Flight Computers, Command and Telemetry Controller, Inertial

Navigation Equipment, RF Transmitter)

Booster

Avionics Interim Cryogenic

Propulsion Stage

Avionics

Core Stage Avionics

(Command and Telemetry Controller, Power Distribution, Data

Acquisition, Camera Equipment, Liquid Level Sensors, Rate

Gyro, RF Transmitter)

Core Stage Avionics

(Main Propulsion System Valve Control, Core Stage Thrust

Vector Control, Rate Gyro)

Core Stage Engine Controllers

Booster

Avionics

www.nasa.gov/sls

SLS Block I Avionics Architecture

8750_JANNAF2015.18www.nasa.gov/sls

www.nasa.gov/sls

SLS Block I Software Providers

8750_JANNAF2015.19www.nasa.gov/sls

System: Flight Computer (FC)

Type: Byzantine Fault Resilient

3 String Voting Architecture

Developer: MSFC In-House

Category: Flight Critical

Function: Primary SLS Vehicle Flight

Control System

System: Redundant Inertial Navigation Unit (RINU)

Type: Internally Self-Checking Architecture

Developer: Stages Subcontractor (Honeywell)

Category: Flight Critical

Function: Provide Navigation and Flight Control

inputs to FCs

System: Rate Gyro Assembly

Type: Internally Self-Checking Architecture

Developer: Stages Subcontractor (Honeywell)

Category: Flight Critical

Function: Provide vehicle rate inputs to FCs

System: Core Stage Engine Controller (CSEC)

Type: Self-Checking Pair of Pairs (Prime/Backup)

Developer: Engines Contractor - Aerojet Rocketdyne (AR)

Category: Flight Critical

Function: Control/Monitor of RS-25 Engine

System: ULA Common Avionics

Based

Developer: ULA

Function: Primary ICPS Flight

Control and Health

Monitoring

www.nasa.gov/sls

SLS Block I Avionics and SW Test Labs

8750_JANNAF2015.20

SDF-3

(FC FSW)

SITF-D (Stages)/

SIL(Level 2)

SITF-Q

(Stages)

SDF-1&2

(FC FSW)

Control

RoomBooster

SITF-D/SIL

SITF-Q HIL

www.nasa.gov/sls

Path to EM-1 (First Launch)

2011 2012 2013 2014 2015 2016 2017 2018

ConceptStudies

Design & DevelopmentFinal Design& Fabrication

System Assembly, Integration and Test, Launch Checkout

✔ ✔✔ ✔Mission

Concept Review

Critical

Design ReviewPreliminary

Design Review

Design

Certification

Review

Launch

AvailabilitySystem

Requirements

Review/System

Definition Review

Key

Decision

Point-C

Booster

Development

Test

Booster

Assembly

at KSC

Booster

Qualification

Tests

RS-25

Flight

Testing

Begins

Core

Stage

Assembly

Complete

Core Stage

Production

Begins

Production

of Adapter

for Orion

Flight Test

SLS

Launch

Readiness

SLS

Design

Chosen

RS-25

Development

Testing

Begins

Engines

Delivered

to

Inventory

Manufacturing

Tooling

Installation

Core

Stage

Structural

Testing

Boosters

Fabrication

Complete

Core

Stage

Test-Firing

✔

Integrated

Upper

Stage

Structural

Testing

Upper

Stage

Production

Begins

0018 IAC_.21

With design and development work

mostly complete, the SLS Program is

now building and testing components

of the world’s most powerful rocket to

be ready for launch in 2018. Each of

these steps advance NASA on the

Journey to Mars.

www.nasa.gov/sls

Summary

• SLS provides capability for human exploration missions.

– Block 1 configuration enables initial flight tests.

– Evolved configurations enable missions including humans to Mars.

• SLS offers unrivaled benefits for a variety of missions.

– Block 1 provides greater mass lift than any contemporary launch

vehicle; Block 2 offers greater lift than any launch vehicle, ever.

– With 8.4m and 10m fairings, SLS will over greater volume lift

capability than any other vehicle.

– Updated Mission Planner’s Guide provides capabilities information.

• SLS is currently on schedule for first launch.

– Critical design review completed in July 2015;

SLS is now in implementation phase.

– Manufacture and testing are currently underway.

– Hardware now exists representing all SLS elements.

0018 IAC_.22

SLS will be the Biggest and Most Capable Rocket ever Built

8750_JANNAF2015.23

www.nasa.gov/sls

Questions?

8750_JANNAF2015.24