High Velocity Implanting of Anchors
Abstract
This report is a summary of a theoretical investigation of three ways to avoid the severe problems caused by recoil in the implanting of Propellant Emplaced Anchors (PEA's). It was specifically requested that a launching system modeled after a recoilless rifle be evaluated. While doing this, the conclusion was reached that the recoilless rifle approach was more complicated than necessary, and that the desired performance could be achieved more easily by a direct rocket. The sponsors had suggested a water jet approach using cold high pressure gas to supply the energy, instead of propellant gas. This turned out to be impractical using the compressed air, but it became very practical using propellant gases. All of the systems were analyzed and simulated by computer models. All three systems appear reasonable and they all solve the recoil problem. However, the recoilless and the direct rocket have a common problem. Their requirement of a rocket motor with very high thrust (1.6 million pounds) and a very short burning time (40 milliseconds) has no parallel in current rocket technology. Apparent solutions to this problem would require very large structures. In any case, their development promises to be expensive and lengthy. Fortunately, the water jet does not share this problem. Its development should be timely, and costs should be reasonable. Keyword: Anchors (Marine).
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1984
- Accession Number
- ADA158161
Entities
People
- Carl T. Zovko
Organizations
- Naval Ordnance Laboratory