What is the main advantage of using a contact vacuum bag system?

The main advantage of using a contact vacuum bag system is that it ensures uniform pressure during repairs. This method provides consistent pressure across the entire surface of the repair area, which is crucial for achieving thorough and even bonding of materials. Uniform pressure allows for better compaction of the materials, leading to a more reliable and durable repair. This is particularly important in structural maintenance for low observable aircraft, where precision and structural integrity are essential to performance and safety.

While other options may have their benefits—such as potentially requiring less manpower or being quicker in certain scenarios—the key focus of the contact vacuum bag system lies in its ability to maintain consistent pressure, which ultimately results in superior quality repairs. The uniform distribution of pressure minimizes the likelihood of air pockets or weak spots, enhancing the overall integrity of the repairs.