NEPTUNE EXCELSIOR CAPSULE TEST #1

The NEPTUNE - EXCELSIOR is a test capsule developed by Space Perspective as part of its program to offer near-space travel for civilian suborbital tourism and research missions. It was named Neptune to honor its connection to the oceans, reflecting its water splashdown after each flight while the name Excelsior pays tribute to Joe Kittinger's pioneering high-altitude parachute jump program from the 1960s.

The capsule, depicted in an artistic image at left, stands approximately 5 meters (16.4 feet) tall, including its structure and observation windows, with a diameter of about 4.5 meters (14.7 feet) and an internal volume exceeding 2,000 cubic feet (60 cubic meters). It is constructed using lightweight yet durable materials that ensure passenger safety and maintain a pressurized environment. Large panoramic windows, over five feet tall, are engineered with advanced glass to withstand the pressures of high-altitude travel. These windows provide crystal-clear, 360-degree views for both seated and standing passengers. A specialized UV-reflective coating enhances optical performance while protecting against harmful sunlight.

An advanced thermal control system ensures a comfortable interior temperature, regardless of external conditions. In its final configuration, the capsule will accommodate up to eight passengers and one pilot. It features spacious reclining seats and an open cabin layout to allow for minimal passenger mobility and includes a bar, restroom, and Wi-Fi connectivity. Adjustable ambient lighting, designed to reduce anxiety, enhances the relaxing atmosphere. A large display screen will provide real-time flight data and journey insights.

The capsule is launched from a custom-built vessel the Marine Spaceport (MS) Voyager from the open ocean, ascending to 100,000 feet (approximately 30 kilometers) via a large, hydrogen-filled stratospheric balloon. The ascent is smooth and gradual, making the experience accessible even to those who might find traditional space travel physically challenging. The entire journey lasts approximately six hours, consisting of a two-hour ascent, a two-hour cruise at peak altitude, and a two-hour descent.

At the end of the voyage, the hydrogen is vented from the balloon to enable a controlled descent into the ocean. The "Splashcone", located at the bottom of the capsule, reduces water impact by breaking the surface tension. Once in the water, it fills and stabilizes the capsule while retrieval boats secure it using rigging lines. The capsule is then hoisted back onto the launch vessel using a custom 52-foot A-frame mounted on the vessel's stern.

For safety, the capsule is equipped with a reserve descent system comprising four parachutes located between the capsule and the balloon. These parachutes deploy seamlessly in case of emergencies. Additionally, redundant life support systems regulate oxygen, temperature, and pressure, ensuring safety in the event of a system malfunction.

Balloon launched on: 9/15/2024 at 11:15 UTC
Launch site: Marine Spaceport Voyager (WDN6410)  
Balloon launched by: Space Perspective
Balloon manufacturer/size/composition: Zero Pressure Balloon 23.000.000 cubic feet
Flight identification number: N3048K
End of flight (L for landing time, W for last contact, otherwise termination time): 9/15/2024 at 19:25 UTC
Balloon flight duration (F: time at float only, otherwise total flight time in d:days / h:hours or m:minutes - ): 8 h
Landing site: In the Gulf of Mexico, 175 miles WSW of the starting point.

• Space Perspective website  
• Space Perspective Successfully Completes Development Flight 2 Space Perspective press release