The reference identifies the third Hunter prototype as fitted with an 8,000 lbf Armstrong Siddeley Sapphire 101 and describes the wing-root intakes and single rear-fuselage jetpipe used by the Hunter layout.
Publisher
55th Fighter Squadron / U.S. Air Force-hosted reference
The museum independently distinguishes Sapphire-powered Hunter development from the Avon-powered F.1, supporting the Sapphire branch boundary without collapsing it into the F.1 installation.