krzysztof pennar moshe zilversmit jon winkler john pignetti ariane mortazavi takeshi fuchiwaki

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Krzysztof PennarMoshe ZilversmitJon WinklerJohn PignettiAriane MortazaviTakeshi FuchiwakiJosh Fromm

Structures Team

Fall 2004 Final Report

22

Baseline Mission

Current Work:• Pin Pullers and Hinges• Updated Solidworks

files• Preliminary FEA• New bus configuration• Individual Component

Radiation Hardening Trade:– Showed increase in

mass of 1.12 kg.

33

New Bus Configuration

• A preliminary FEA showed that a solid panel bus should be redesigned

• Designed a X-panel bus which weights 3.055kg• Key design issue: Induced moment from being a

piggyback satellite.

44

Upscope Mission

• Maintain mass savings with a new bus design vis-à-vis FEA

• A hexagonal bus design was chosen for more stability. It weights 5.487 kg.

55

Descope Mission

• With no propulsion tank bus size was reduced to a 30x30x15 cm box.

• Panels were kept solid due to radiation hardening trade. Bus mass is 5.85 kg.

66

Mass Savings and Updated MomentsPrevious

Mass (kg)

New Mass (kg)

Savings (kg)

Baseline 7.865 3.055 3.69

Descope 7.865 5.85 2.015

Upscope 7.865 5.486 1.212

Baseline Moments of Inertia (kg * m^2):Ix = 0.6915Iy = 0.7981 Iz = 1.2180

Descope Moments of Inertia (kg * m^2):Ix = 0.644 Iy = 0.661 Iz = 0.160

Upscope Moments of Inertia (kg* m^2);Ix = 0.581Iy = 0.734Iz = 1.117