A Historical Overview

T-28 Instrumentation:Position/Attitude/Velocity

Initial Final

Absolute Position VOR/DME GPS

Storm-relative Tracking radar Telemetered GPS

Altitude Static pressure Static pressure (radar altimeter)

Attitude Pitch/roll gyro Pitch/roll gyroAngle of attack

Heading Magnetic HSI

Speed Dynamic/static p Dynamic/static p

Time Internal clock GPS

T-28 Instrumentation:State Variables

Initial Final

Temperature Rosemount RosemountReverse-flow Reverse-flow

Pressure Static p Static p

Humidity None None

T-28 Instrumentation:Winds

Initial Final

Vertical Rate-of-climb Kopp equation(corrected for (pitch, static and

airspeed, engine dynamic pressures)power variations)

Horizontal None None

Turbulence Fluctuations in Fluctuations indynamic p dynamic p

Accelerometers Accelerometers

T-28 Instrumentation:Microphysics

Initial Final

Cloud water J-W heated wire DMT (King) heated wire(Rosemount icing rate)

Cloud particles Formvar replicator PMS FSSP

Precipitation Foil impactor PMS OAP (2D-C)Particles Cannon camera HVPS

Hail Foil impactor HVPSWindscreen microphone Hail sensor (OAP)

Windscreen microphone

Foil Impactor

HVPS

Hail Sensor

T-28 Instrumentation:Electrification

Initial Final

Electric fields None Field mills (6)

Particle charge None (HVPS charge plates)

T-28 Instrumentation:Chemistry

Initial Final

Tracer gas None (SF6 analyzer)

NO / NOx None TEI analyzer

Sniffer mist

T-28 Instrumentation:Experimental(partial list)

Total water Kyle evaporator

Temperature K-probe

Particle catchers Various

X-rays X-ray detector