Full cost recovery A NASA program that requires all outside NASA customers to pay the full cost of NASA participation in joint programs
HIFiRE Hypersonic International Flight Research Experimentation
HIWC High ice water content
HSCT(1283) High-Speed Civil Transport
HSR(1283) High-Speed Research
HTV-2 Hypersonic Technology Vehicle 2
Hypersonic Hypersonic, or hypersonic speed, is considered to be five times the speed of sound; also known as Mach 5 or greater.
ISRP Integrated Systems Research Program
JSRA Joint Sponsored Research Agreement
MAJCOMs Major Commands
MUTT Multi-Utility Technology Testbed
NACA National Advisory Committee on Aeronautics
NAS National Airspace System
NAVAIR Naval Air Systems Command
NextGen Next Generation Air Traffic Management System
NGLT Next Generation Launch Technology
NRA NASA Research Announcement
PRSEUS Protruded Rod Stitched Efficient Unitized Structure
QSP Quiet Supersonic Platform
RevCon Revolutionary Concepts program, which was created to encourage innovation in flight vehicle design
SCAR Supersonic Cruise Aircraft Research
SOFIA Stratospheric Observatory for Infrared Astronomy
Sonic boom The sound released by shock waves associated with an aircraft as it travels faster than the speed of sound
SST Supersonic Transport
Supersonic Supersonic, or supersonic speed, is considered to be greater than the speed of sound; also known as Mach 1 or greater.
TRL Technology readiness level
UAV/UAS Unpiloted aerial vehicle/uninhabited aerial system
VAATE Versatile Affordable Advanced Turbine Engine
X-factor A quantitative measure of a program’s level of technological difficulty

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