The US Navy began testing the Piasecki XHJP-1 prototype (which led to the HUP-1) after its first flight in March 1948, with the aircraft entering service with the Navy in 1949. Testing and Operational History The Piasecki HUP-1 Retriever was developed to meet a 1945 U.S. Navy requirement for a compact, shipboard utility and rescue helicopter. Prototypes: The initial prototypes were designated XHJP-1 by the Navy and internally as the Piasecki Model PV-14. These were evaluated in a side-by-side co

Collapsible Core Inserts 😍 Operational testing #mpuldmaker #MouldTesting #mouldassembly | HassanPlas