Did you ever wonder what those strange conglomerations of letters meant? Here's your chance to find out what those NASA acronyms stand for. About Space and Astronomy presents the Guide to NASA Acronyms. From Baseline to Backup Control Electronics - Bus Control Element to Booster Solid Rocket Motor, you'll find them all here. This page lists acronyms starting with B. For others, click on the appropriate letter above or below.

[B]

B: Bit
BLOW: Booster-Lift-Off Weight
B&P: Budgetary and Planning
B&W: Black and White
B-1 DIV: B-1 Division (Rockwell)
B/A: Bank Angle
B/A: Barometric Altimeter
B/A: Buffer Amplifier
B/C: Bench Check
B/L: Baseline
B/O: Booster Orbiter
B/O: Breakout
B/O: Burnout
B/SC: Brake Skid Control
B/SMPL: Bits per Sample
B/U: Backup
B/V: Bleed Valve
B/W: Black and White
B/sec: Bits per Second
BA: Bank Angle
BA: Breathing Air
BAC: Boeing Aircraft Company
BAC: Booster Assembly Contractor
BAC: Buffer Access Card
BACS: Body Axis Coordinate System
BAI: Barometric Altitude Indicator
BAIR: Breathing Air
BAL: Balance
BAN: Budget Allocation Notice
BARB: Ballast Aerating Retrieval Boom
BARO: Barometer
BARS: Baseline Accounting and Reporting System
BASD: Ball Aerospace Systems Division
BASS: Backup Avionics System Software
BATT: Battery
BB: Breadboard
BBC: Before Business Clearance
BC: Battery Charger
BC: Binary Counter
BC: Bus Coupler
BCCT: Break Control Command Transducers
BCD: Binary Coded Decimal
BCE: Backup Control Electronics
BCE: Bus Control Element
BCFS: Backup Flight Control System
BCH: Binary Coded Hexadecimal
BCH: Bose-Chaudhuri-Hocquenghen (Computer Code)
BCN: Beacon
BCP: Base Condemnation Percent
BCP: Benchmark Control Point
BCR: Bar Chart Report
BCRD: Basic Consolidated Requirements Document
BCRT: Binary Code Range Time
BCT: Bus Configuration Table
BCU: Bus Control Unit
BCWP: Budget Costs for Work Performed
BCWS: Budget Costs for Work Scheduled
BD: Band
BD: Binary Decoder
BD: Binary Digit
BD: Binary Discrete
BD: Board
BDA: Backup Drive Amplifier
BDA: Bermuda Island
BDA: Bermuda (STDN)
BDA: Blast Danger Area
BDA: Backup drive amplifier
BDC: Bi-Directional Converter
BDC: Bit Error Rate
BDCF: Baseline Data Collection Facility
BDCR: Baseline Document Change Request
BDD: Baseline Definition Document
BDT: Block Data Transfer
BDY: Body
BDYFLP: Body Flap
BECO: Booster Engine Cutoff
BER: Bit Error Rate
BFC: Backup flight control
BFCS: Backup flight control system
BFS: Backup flight system
BITE: Built-in test equipment
BLK: Block
BLR: Boiler
BLS: Bottom Left Side
BLV: Bleed Valve
BLWR: Blower
BM: Basal Metabolism
BM: Business (Branch) Manager
BM: Body Mounted
BMA: Body-Mounted Accelerometer
BMAG: Body-Mounted Attitude Gyro
BMAP: Buffer Map
BMB: Base Maintenance Building
BME: Bench Maintenance Equipment
BMFT: German D-1 Spacelab Payload
BMMD: Body Mass Measuring Device
BMS: Background Measurement Satellite
BMU: Bus Monitor Unit
BN: Ballistic Number
BO: Breakout Box
BOB: Best on Best
BOD: Beneficial occupancy Date
BOE: Break of Entry
BOF: Beginning of File
BOI: Break of Integrity
BOM: Beginning of Month
BOM: Bill of Materials
BOP: Baseline Operations Plan
BOPACE: Boeing Plastic Analysis Capability for Engines
BOS: Backup Operating System
BOS: Bright Object Sensor
BOT: Beginning of Tape
BOT: BOTSWANA (STDN)
BOW: Bill of Work
BP: C-BD C-Band
BP: C/SCSC Cost/Schedule Control Systems Criteria
BP: C/D Countdown
BP: C&T Communication and Tracking
BP: C&TSS Communication and Tracking Subsystem
BP: Barber Pole
BP: Blood Pressure
BP: Bandpass
BP: C/S Counts per Second
BP: C/W Carrier Wave
BP: C/P Cold Plate
BP: Checkout
BP: C/0 Changeout
BP: Closed Loop
BP: C/L Checklist
BP: C/F Center Frequency
BP: C/R Commutation Rate
BP: C/C Combustion Chamber
BP: C-to-C Computer-to-Computer
BP: C-C Carbon-Carbon
BP: C-Band 3900 to 6200 MHz
BP: Caution and Warning
BP: C&W Caution and Warning
BP: Contamination/Overpressure
BP: CA California
BP: C&M Control and Monitoring
BP: C&DS Command and Data Simulator
BP: C&DH Command and Data Handling
BP: C&D Control and Display
BP: One Hundred
BP: Cycle
BP: Constant
BP: Complete
BP: Coeff icient
BP: Centigrade
BP: Celsius
BP: Capacitance
BP: Back Pressure
BP: Cutoff
BP: Boilerplate
BP: c
BP: c Candle
BPD: Baseline Program Documentation
BPI: Bits per Inch
BPM: Beats per Minute
BPMS: Blood Pressure Measuring System
BPR: Bypass Ratio
BPS: Bits Per Second
BPT: Body Point
BPV: Bipropellant Valve
BR: Bit Rate
BRAVO: Business Risk and Value of Operation in Space
BRCS: Basic Reference Coordinate System
BRG: Bearing
BRK: Brake
BRKT: Bracket
BRM: Biological Research Module
BRPM: Breath Rate per Minute
BRRS: Banana River Repeater Station
BRS: Bottom Right Side
BRT: Bright
BS: Block Specification
BSC: Brake Skid Controller
BSDP: Booster Stage Discharge Pressure
BSE: Booster Systems Engineer
BSI: Basic Shipping Instructions
BSI: "Boeing Services International, Inc."
BSM: Booster Separation Motors
BSM: Booster separation motor
BSR: Basic System Release
BSR: Bite Status Register
BSRM: Booster Solid Rocket Motor
BSS: Backup System Services
BSTR: Booster
BT: Burn Time (Engine)
BTC: Bus Tie Contractor
BTC: Binary Time Code
BTMS: Body Temperature Measuring System
BTR: Burn Time Remaining
BTR: Boom Time Remaining
BTR: Bus Transfer
BTU: Bus Terminal Unit
BU: Backup
BUC: Backup Computer
BUC: "Buckhorn, CA (GSTDN)"
BUFF: Buffer
BUOU: Backup Optical Unit
BUR: Backup Rate
BW: Bridgewire
BW: Bandwidth
BX: Box
BY: Budget Year
BYP: Bypass
Btu: British Thermal Unit

For more NASA acronyms, select a letter below or at the top of the page to continue with the About Astronomy and Space Guide to NASA Acronyms.