Emergency Retrieval of a Space Shuttle Without a Mate-Demate Device

In the event of an emergency landing of a space shuttle at a backup landing strip, the retrieval process would typically involve several steps. This article explores the methods and procedures required for safely and efficiently retrieving the shuttle, especially when the mate-demate device, which is usually essential for attaching the shuttle to the Shuttle Carrier Aircraft (SCA), is unavailable.

Assessment and Safety

The first step in the process is an extensive assessment of the shuttle's condition to ensure it is safe for retrieval. Ground crews must check for any potential hazards such as fuel leaks or structural damage. This ensures that no risks arise during the subsequent lifting and transportation phases.

Ground Support Equipment

Specialized ground support equipment is brought in to assist with the retrieval. This could include cranes or other heavy-lifting devices capable of safely lifting the shuttle. These machines are crucial in managing the weight and structural stability of the space shuttle securely.

Transporting the Shuttle

If the shuttle cannot be transported using a mate-demate device, it might be loaded onto a flatbed truck or a heavy transport vehicle. The shuttle is carefully secured to prevent any movement during transport. This ensures the shuttle remains intact and ready for further handling.

Transport to a Suitable Facility

The flatbed truck then transports the shuttle to a facility equipped to handle spacecraft, such as the Kennedy Space Center or the Johnson Space Center. These facilities are equipped with the necessary resources and expertise to perform inspections and maintenance on the shuttle before any future missions.

Reintegration with SCA

Once at a suitable facility, if the shuttle needs to be flown again, it can be reintegrated with the SCA using a mate-demate device available at that location. Alternatively, specialized machinery such as cranes can be used to safely lift and move the shuttle.

Historical Precedents

Historically, the retrieval process has been refined through practice and experience. For instance, in 1982 when the space shuttle STS-3 landed at the White Sands backup site, two cranes and a lifting frame were used to lift the shuttle onto the 747 carrier aircraft. Similarly, Enterprise was lifted off a 747 carrier aircraft by crane when it was taken to Dulles Airport in 1985.

NASA’s plans included using two rented mobile cranes for mounting and mating operations when necessary. However, during actual operations, teams have relied on specialized machinery and techniques to handle the shuttles effectively. The process was practiced at the Shuttle Landing Facility on the ramp near the permanent Mate-Demate Device.

For instance, the lifting of the space shuttle Discovery was a significant demonstration of the procedures. It involved two large cranes, a specially built sling, four masts, and about 45 people to perform the complex maneuvers safely. This practice ensured the skills and procedures were refined to meet the stringent safety requirements of lifting and moving the space shuttles.

A contingency plan for the lifting of a space shuttle is not just about having the right equipment but also the expertise to operate it effectively. The teams at NASA and partner institutions have honed these skills over years of practice to ensure the safe and efficient retrieval of space shuttles, even in challenging circumstances.

Overall, while the absence of a mate-demate device complicates the process, alternate methods of transport and lifting can be employed to retrieve the shuttle safely. The process remains a vital aspect of ensuring the integrity and safety of the space shuttle, even in unexpected situations.