Innovative Uses of the Canisterized Satellite Dispenser (CSD) · 2018-12-17 · 25 April 2014 Innovative Uses of the Canisterized Satellite Dispenser (C SD) 11th CubeSat Workshop,

25 April 2014 Innovative Uses of the Canisterized Satellite Dispenser (CSD) 11th CubeSat Workshop, Cal Poly, San Luis Obispo www.planetarysystemscorp.com Page 1

Innovative Uses of the CanisterizedSatellite Dispenser (CSD)

By Walter Holemans (PSC), Ryan Williams (PSC), Andrew Kalman (Pumpkin), Robert Twiggs(Moorehead State University), Rex Ridenoure (Ecliptic Enterprises Corporation), Tom Walkinshaw

(Pocketcubeshop), Ryan Hevner (PSC), and Floyd Azure (PSC)

6U CSD

6U CubeSat


What is CSD?

• A high performance Cubesat dispenser– Preloaded Payload Tabs create a predictable

load path to and from the payload.– CSD Constrained Deployables eliminate the

payload’s need for complex restraintmechanisms.

– Six Mountable Sides increase integrationoptions

– Motor Driven Initiator creates a reliable andtestable deployment mechanism thatautomatically resets without consumables.

– Separation Electrical Connector allowscommunication and charging between payloadand launch vehicle.

– P-Pod Compatible Mechanical Interfaceensures compatibility with existing Cubesats.

– Lowest External Volume versus existingdesigns increases packaging density on launchvehicle.

– Largest Internal Volume versus existingdesigns accommodates larger payloads.

– Safe/Arm Access on Front Door ensurespayload access at all times.


Dispensing PocketQubs

• 3 part encapsulant holds 8 PocketQubs in a ~1U– The 3U CSD is 1 inch longer internally allowing the extra length of the

encapsulants, allowing 24 PocketQubs

PocketQub

Encapsulant

Similar to encapsulationof POPACS spheres

Tab: loadpath to CSD


6U Structure

• Designed by Pumpkin, Inc.– Holds six standard CubeSats

as subsystems in larger 6UCubeSat


Separationconnector toLV

Motors drive PVpanels

204 Watt PVpanel candrive electricpropulsion tothe planets

Aluminumstructure

2.87 m(113 in)

6 x 1UCubeSat


Arbitrary Length Payloads

• 3U CSD constrains and dispenses 5 CubeSats• Total length does not have to fill CSD



Dispensing Hosted Payloads from largespacecraft

• Dispensing spacecraft from geostationary spacecraft allows electric propulsionto Moon, Mars etc.

– Need 1.6 km/sec to Moon from Geostationary: about 1 kg of propellant at an Isp of 1,500 sec

T+ 0.5 seconds,∆V = 1.0 m/sec

PV panels and RF antenna automatically fullydeploy in 10 seconds

In CSD: Trickle charge, thermalcontrol and state of healthtelemetry via separationconnector for days, months oryears

• Stabilize in 30 minutes• RF communication to Earth• Verify state of health of subsystems• Await propulsion enable

Geostationaryspacecraft

To the Moon,Mars, etc.


Dispensing from the inside of ESPA

• A simple, flat Interface Plate allows rapid and robust integration to ESPA

AluminumInterface Plate

6U CSD

ESPA

CSD is cantilevered offof Interface Plate


Sequencing Electronics and Camera in 3UCSD

• Sequencer (By Ecliptic) initiates thedispensers once launch vehicle (LV)enables

• Camera(s) records– Initial conditions of missions

• Tumble rates and velocity• Shape of deployables• CubeSat constellation shape

– Proximity operations

Sequencer andcamera mount to

aluminum plate (tabto CSD)

Dooropens toexposecamera

Sequencerin 3U CSD

SAFE/ARMconnector

Separationconnector to LV

Connectors towiring harness toother dispensers

Battery if LV doesnot supply power

ESPAGrande

(Sequencer doesnot dispense itself)

Optical or IRcamera,

RADAR/LIDAR


References

• Staehle, Robert L. Lunar Flashlight: Finding Lunar Volatiles UsingCubeSats, Third International Workshop on LunarCubes Palo Alto,California, 2013 November 13

Documents

Innovative Uses of the Canisterized Satellite Dispenser (CSD) · 2018-12-17 · 25 April 2014 Innovative Uses of the Canisterized Satellite Dispenser (C SD) 11th CubeSat Workshop,