{"product_id":"hawker-siddeley-kestrel-aircraft-aeroplane-manuals-collection-digital-download","title":"Hawker Siddeley Kestrel Aircraft Aeroplane Manuals Collection - Digital Download","description":"\u003cp\u003eThe Hawker Siddeley Kestrel FGA.1 and its predecessor, the P.1127, represent one of the most significant aeronautical achievements of the twentieth century — the world's first practical V\/STOL combat aircraft. This structured collection brings together the primary technical and operational documentation covering the aircraft's development from its 1957 origins through the landmark Tripartite Evaluation Squadron (TES) trials at RAF West Raynham in 1965, providing researchers, historians, and aviation enthusiasts with an authoritative archival reference.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDefinitive Collection with Free Lifetime Updates:\u003c\/strong\u003e This is a living collection that we continuously expand and refine. As we acquire additional Kestrel and P.1127 documentation, technical bulletins, or variant-specific materials, we update this collection and provide free lifetime updates to all purchasers. Your one-time purchase guarantees access to all future additions and improvements to this collection.\u003c\/p\u003e\n\n\u003ch2\u003eHistorical Note\u003c\/h2\u003e\n\u003cp\u003eThe P.1127 was conceived by Hawker Aircraft's chief designer Sir Sydney Camm in collaboration with Bristol Aero Engines, whose BE.53 — later named the Pegasus — provided the vectored-thrust powerplant that made vertical flight possible. The design philosophy was one of deliberate simplicity: rather than relying on a three-axis auto-stabilisation system, Camm's team developed a reaction control system (the \"puffer\" system) using bleed air at the nose, tail, and wingtips to maintain control authority during hover, where conventional aerodynamic surfaces were ineffective.\u003c\/p\u003e\n\u003cp\u003eThe first prototype, XP831, conducted tethered hover trials in 1960 using an early Pegasus engine producing approximately 11,000 lbf of thrust. A progressive series of nine prototypes followed, each addressing aerodynamic refinements including a redesigned swept wing on later aircraft such as XP984, and an anhedral tailplane with increased span to counteract instability at high Mach numbers. NASA contributed wind tunnel data from tests on a 1\/6-scale model at Langley Field, providing critical information on longitudinal stability in the landing approach and pitch-up tendencies.\u003c\/p\u003e\n\u003cp\u003eThe Kestrel FGA.1 was the refined evaluation derivative, powered by the Bristol Siddeley Pegasus 5 producing 15,000 lbf of thrust, enabling improved short take-off (STO) performance. Nine aircraft were built for the Tripartite Evaluation Squadron — a joint US, UK, and West German unit — which conducted extensive operational trials in 1965 focusing on V\/STOL handling, transitions between vertical and conventional flight, and operations from unprepared forward sites. The Kestrel's direct lineage led to the Harrier, which entered RAF service in 1969 and went on to serve in the Falklands conflict and beyond.\u003c\/p\u003e\n\n\u003ch2\u003eManuals Included in This Collection\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHawker Siddeley Kestrel FGA MK.I Aircraft Airframe Repair Instructions Manual — Av.P.69 Volume 6, Book 1\u003c\/li\u003e\n\u003cli\u003eHawker Siddeley P.1127 Aircraft Operational V\/STOL Close Support Technical Brochure Manual\u003c\/li\u003e\n\u003cli\u003eHawker Kestrel F.G.A.1 Aircraft Operating Data Manual\u003c\/li\u003e\n\u003cli\u003eHawker Siddeley Kestrel F.G.A MK.1 Aircraft Pilot's Notes Manual — Advance Issue\u003c\/li\u003e\n\u003cli\u003eHawker Siddeley Prototype XP831 \/ XP976 \/ XP980 Aircraft Pilot's Notes Manual\u003c\/li\u003e\n\u003cli\u003eHawker Kestrel FGA 1 Aircraft Pilot's Notes Manual — 1965 (A.P.69-A.P.N.)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eTogether these documents span the full arc of the programme — from early prototype handling notes for XP831, XP976, and XP980 through to the definitive Kestrel FGA.1 pilot's notes and airframe repair instructions used by the Tripartite Evaluation Squadron. The operational brochure provides the broader V\/STOL close support context within which the aircraft was evaluated.\u003c\/p\u003e\n\n\u003ch2\u003eEngineering Norms and Standards\u003c\/h2\u003e\n\u003cp\u003eDocumentation in this collection reflects British military airworthiness standards of the early 1960s, including Air Publication (AP) conventions governing pilot's notes and maintenance manuals. The Pegasus engine development followed Bristol Siddeley's internal engineering standards for the two-stage fan, seven-stage compressor, and three-stage turbine configuration, with nozzle rotation achieved via air motors and chain drives — a mechanism detailed in the technical brochure. Aerodynamic data was validated against NASA wind tunnel reports and Hawker's own blowing trials simulating hot\/cold gas ingestion and ground effect on unpaved surfaces. The SAE Technical Paper 640072 (Lickley and Crampton, 1964) provides a peer-reviewed overview of the design and flight test programme consistent with the engineering standards of the period.\u003c\/p\u003e\n\n\u003ch2\u003eFormat and Delivery\u003c\/h2\u003e\n\u003cp\u003eAll documents are delivered as high-resolution PDFs, optimised for both screen reading and printing. Files are clearly named and organised by document type. Delivery is instant upon purchase — no shipping, no waiting.\u003c\/p\u003e\n\n\u003ch2\u003eDisclaimer\u003c\/h2\u003e\n\u003cp\u003eAll documents in this collection are provided for historical reference and research purposes only. They do not constitute current airworthiness data. Trade names and designations are the property of their respective owners. Copyright © Sicuro Publishing.\u003c\/p\u003e","brand":"Online Aviation Library","offers":[{"title":"Default Title","offer_id":52834801942875,"sku":null,"price":39.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0955\/4788\/3867\/files\/lb4-banner-1-kestrel-hover.png?v=1776488921","url":"https:\/\/onlineaviationlibrary.com\/products\/hawker-siddeley-kestrel-aircraft-aeroplane-manuals-collection-digital-download","provider":"Online Aviation Library","version":"1.0","type":"link"}