# Excelsior

[Download Excelsior spec sheet](https://i3g2h5t3.delivery.rocketcdn.me/wp-content/uploads/2024/10/0072_TO_EXCELSIOR_PLATFORM_031824_1150.pdf)

## 50kg

PAYLOAD MASS

## 500w

MAX SOLAR ARRAY POWER

## 125KG

LAUNCH MASS

## ECONOMICAL RIDESHARE

Excelsior shares a common EPS architecture with the larger spacecraft in the product line while providing redundancy in key components. Terran Orbital’s entire line of satellite buses shares the same avionics and GNC algorithms.

The Excelsior allows maximum payload volume and a large solar array while providing low launch costs. This class also gives it a power advantage over the nano platforms. It includes a propulsion bay accommodating EP, Hydrazine, or a mix of propulsion systems.

Terran Orbital employs top-of-the-line automation and modern manufacturing processes to support the delivery of hundreds of buses annually. From order to launch, in quantities from one to a constellation of one hundred, Terran Orbital accelerates the delivery of mission solutions.

## KEY BENEFITS

- Build-out constellations faster with the ability to launch two satellites per ESPA port
- Delivers higher power-to-payload ratio than nano-class platforms
- Based on hardware with significant flight heritage

## Baseline Modules Included

- Watchdog
- Backplane
- Flight Computers (2)
- 66V Battery Modules (2-4)
- 66V MPPT (1-2)
- 66V Load Controller
- 28V Low-power Point-of-Load (varies)
- 28V High-power Point-of-Load (varies)
- Coarse Sensors (2)
- Gyro Assembly
- Star Trackers (3)
- GPS (2)
- Magnetorquers (3)
- Reaction Wheels (3)
- LDRR (2)
- MDR (2)

## Specifications

| Configuration | Half-ESPA |
| --- | --- |
| Applications | LEO |
| Native Orbits | 400km - 1200km |
| Launch Mass (Wet)* | Up to 125kg |
| Available Payload Mass | 50kg |
| Max Solar Array Power<br>3rd-party solar array included | 500W |
| Redundancy | Single-string |
| Power System | 66V sys power<br>28V, 12V,<br>and 9V rails available |
| Communication Data Rate | S-band: 125 Kbps uplink<br>2 Mbps downlink<br>X-band: 650 Mbps downlink |
| Propulsion | 400s ISP standard |
| Pointing Accuracy | 10 to 50 arcseconds<br>higher accuracy available |

_* maximum mass may not be supported on all launch vehicles or with all deployers._