Pumpkin recently delivered a 72W solar panel that is destined for the Moon. Configured as a single 6x10S1P + 1x12S1P solar array on a carbon fiber and aluminum honeycomb substrate, this panel will drive a Pumpkin power system consisting of a Pumpkin EPSM1 multi-channel high-efficiency power system with two Pumpkin BM2 100Wh batteries attached, all in a lunar rover.

This solar panel has the usual hallmarks of a Pumpkin PMDSAS solar array, including redundant paths for every solar cell string's signal net, redundant bleed resistors, multiple temperature sensors, an extremely high degree of design symmetry to reduce cost, and many design details customized for this particular application. The signal traces are implemented exclusively on the top layer of the PMDSAS sub-panels via careful maze routing, for the ultimate in reliability.

Pumpkin is delivering deliver a Pumpkin SUPERNOVA bus stack to a customer, in the form of a stack of modules that fits inside a 3U CubeSat. Additionally, the customer has the same stack inside a Rackmount SUPERNOVA Satellite Simulator (RS3).

Both stacks run the same Pumpkin flight software, simulate a variety of Pumpkin flight modules, include a real GPSRM1 GNSS receiver module, and provide SUPERNOVA-class payload connectivity via serial and Ethernet connections. The consistency of the SUPERNOVA architecture and the friendliness of its open flight software architecture promote rapid spacecraft development and payload integration.

A recent Wired article includes a nice image of NovaWurks' SIMPL HiSat satellite on orbit. On it you can see two of the many Pumpkin solar panels that HiSat uses. The fixed panels power the individual HiSat cells as the system is aggregated; once the HiSat's on-orbit configuration is complete, it deploys the two DCSAs for hundreds of Watts of power. An overview of the SIMPL mission shows the DCSAs in their deployed configuration, and is available here.

Additionally, the object at the upper left that is mounted at a slight angle is SNAPS, the Stanford Nano PictureSat, a student project at Stanford University's Space & Systems Development Lab (SSDL) from 2012 to 2016. Stanford students David Gerson, Andrew Ow, Rishi Bedi and Thomas Teisberg were instrumental in reconfiguring SNAPS for testing and integration at NovaWurks.

NASA's Dr. Ved Chirayath's Fluid Lensing work as applied to imaging through water from the air is described at length in this ScienceDirect article entitled "Fluid lensing and machine learning for centimeter-resolution airborne assessment of coral reefs in American Samoa."

In 2015, Chirayath's group commissioned a pair of Pumpkin HiPPiECams (renamed "FluidCams" by NASA) capable of 90fps 2kx2k RGB and monochromatic 12-bit image ​capture, limited only by on-board storage. The two cameras were delivered on time and under budget.

HiPPiECam incorporates an Intel i5 processor running a Pumpkin image capture program on Windows 7, a Pumpkin SupMCU control module, dual SSDs in a RAID0 configuration, and a breakout board with multiple interfaces (Ethernet, USB, eSATA, etc.) to the i5. The imager interfaced to the i5 over USB 3. Pumpkin had a series of Leica 1:2.8/28 ASPH and Elmar-M 1:3.5/135 lenses tested at Olaf Optical Testing and fully characterized for field curvature, etc., so that the complete optical path could be optimized in post-processing.

Since then, Pumpkin has continued to create new high-speed image capture architectures. The latest is nVidia Tegra-based, runs Linux, has direct GPS geotagging support, runs from AC or DC power and supports multiple cameras with GeoTIFF and other supported output formats.

A recent SpaceNews article explains how LACMA's ENOCH CubeSat was tracked by CSpOC . ENOCH was somewhat unusual in that it was conceived as a purely passive CubeSat. In order to satisfy its launch license requirements, ENOCH integrated a small, battery-powered beacon, in the form of SRI International's CubeSat Identification Tag (CUBIT). A CUBIT was attached to ENOCH's structure late in the integration phase. For more info on ENOCH, see our news page or visit LACMA. For those in the know, ENOCH measured less than a cubit in length ...

Please visit us and learn about our new products designed and made in California in booth #6 at the SmallSat 2019 conference in Logan, Utah on Monday, August 5 through Thursday, August 8, 2019.

The BRRM mission for which Pumpkin provided the structure, OBC (MBM 1 + PPM E1), fixed and deployable solar panels, solar panel release mechanism (PRM, driven by the SIM module), and overall system integration, has an excellent mission overview page. Of particular note are some of these highlights:

• The manner in which the payload interfaced to the bus -- the payload (see Figure 4) interfaced to the bus solely by plugging into the bus via the CubeSat Kit (CSK) 104-pin connector, and was secured in place via mounting holes in the custom Pumpkin chassis.
• The overview of anomalous events and their resolutions (see Figure 9).
• The issue of the effect of resets on the Real-Time Clock (RTC). Since 2009, the RTC has lived on the Pumpkin Motherboard Module (MBM 1), and is provided with an independent RTC backup battery (VBACKUP), that can be source from either a BR1225 Lithium coin cell on the MBM 2, or by an external power source connected to VBACKUP on the CSK 104-pin bus. In both cases, the backup power to the RTC is through a series 10kOhm resistor, thereby limiting max power to 1mW. Unfortunately BRRM used neither of these options, and so the RTC would lose its state whenever there was a global power-system reset. Recent revisions to the CubeSat specification have incorporated an allowance for low-current 3V power  sources for RTCs; however, not all launch providers will allow this. We recommend that all RTC users push their launch providers hard to allow these low-energy, low-power, low-risk RTC backup sources.

NASA's ALBus CubeSat was launched from New Zealand on 16 December 2018. ALBus is a 3U CubeSat serving as a testbed for a high power electrical system, and the use of shape memory alloys (SMAs) in its solar panel hinges and release mechanism.

Pumpkin designed and built the ALBus solar panels to NASA GRC's specifications within a very short time period. Additionally, ALBus utilizes a Pumpkin CubeSat Kit 3U structure. While the fixed 7S1P panels were relatively standard in their layout, the deployable 7S1P panels had special design features to accommodate ALBus' SMA hinges and the SMA-based release mechanism. Pumpkin worked with NASA GRC early career engineers to resolve all of these special requirements in an elegant fashion. 

NASA has provided detailed technical information on ALBus and its development.

On 5 May 2019 a Rocket Lab Electron rocket launched three small satellites from New Zealand’s North Island. Included in the manifest is AFRL's SPARC-1, a 6U CubeSat built on Pumpkin's SUPERNOVA bus, with two payloads. This is the second SUPERNOVA launch, after 2015's SUPERNOVA-Beta launch that ended with the failure of the Super Strypi launch vehicle on Nov 3, 2015.

While SUPERNOVA-Beta remains in a sub-aqueous orbit, SPARC-1 is now in a LEO Orbit and undergoing commissioning.

JPL has now demonstrated a laser communications pointing experiment between two JPL small satellites: ISARA (the receiver) and OCSD (the transmitter). ISARA is a 3U CubeSat that is powered by a novel, deployable Pumpkin solar array that stows around three sides of the 3U structure. The array's three monolithic panels are hinged together, and deploy to present 24 solar cells on top, and a Ka-band reflectarray (that is essentially an RF Fresnel lens), on the bottom. The flatness of these three panels is critical for the performance ISARA's Ka-band system. 

ISARA was launched in January 2018. ISARA's solar array and reflectarray have functioned flawlessly on orbit. More information about the recent laser experiment is available here.