Magnetic Torquer Bars Fully Qualified

www.CayugaAstro.com, 607-319-4794 R140509-01

Largest selection of standard designs70+ standard designs from 1 to 1500 Am2

L Series: Lowest mass & powerS Series: Compact & lowest residual moment33% lighter than competition20% lower power than competition

Superior constructionExperienced assemblers, Superior core materialStandardized component design

Winding Process-Bifilar wound-Controlled wire tension -Zero wire twist-Windings & cover embedded in potting material

Space flight heritage-Cayuga Astronautics’ team have built ~1000 MTBs that have flown in space with 100% success-Six Cayuga Astronautics’ MTBs scheduled to launch in 2015

Magnetic Torquer Bars Fully Qualified

www.CayugaAstro.com, 607-319-4794 R140509-01

MTB-200S-28V

MagnetometerSense Coil

Test Equipment

Two different performance test methods produce similar results

Qualification models built for all new designsMTB qualified to levels higher than typically required Random Vibe: 25 Grms, 3 min/axis (0.5 g2/Hz 50 to 800 Hz)Thermal Vacuum: 8 Cycles -34 to 71 ⁰C

Magnetic performance not affectedby Thermal Vacuum or Random Vibe

Traditional methodMeasure magnetic field to determine moment Jig accurately positions magnetometerScaling determined during core test

Torsional pendulum methodTorque is cross product of magnetic moment of MTB and horizontal component of Earth’s magnetic field

M = (I/B) x (2πf)2

M =Magnetic Moment

I = Rotational Inertia

B = Magnetic Field Horizontal Plane

f = frequency

Performance Testing Qualification Testing

Magnetic Torquer Bars Fully Qualified

www.CayugaAstro.com, 607-319-4794 R140509-01

Custom TVAC chamber simultaneously tests 3 different MTBs up to 1500 Am2 (60 inch long)

Thermal Vacuum data for 3 small & 3 large MTBs: Coil temp < 95C at max power & 71C ambient