Fairey Delta 2

Fairey Delta 2
Riik	Uk
Rolli	Kiiruurimislennukid
Esimene lend	6. oktoober 1954
Ehitatud	2

2007 Fairey Delta 2 või FD2 (fairey sisemine nimetus V tüüp) oli Briti ülehelikiirusega uurimislennuk, mille fairey aviation company tootis vastuseks tarneministeeriumi spetsifikatsioonile spetsiaalse õhusõiduki jaoks, mis viis läbi lennu ja juhtimise uurimist ülehelikiirusel ja ülehelikiirusel. Tüübi põhijooned hõlmavad delta tiiva ja nina vastuvõtmist. 6. oktoobril 1954 viis Delta 2 läbi oma esimese lennu, mida lennutas Fairey katselendur Peter Twiss; Kokku toodetakse kaks lennukit. Delta 2 oli viimane lennuk, mida Fairey tootis iseseisva tootmisena.

Allikas: Fairey Delta 2 Vikipeedias

BAC 221 Walk Around
Fotograaf	Howard Mason
Lokaliseerimine	Fleet Air Armi muuseum
Fotod	61

BAC 221 01

BAC 221 02

BAC 221 03

BAC 221 04

BAC 221 05

BAC 221 07

BAC 221 06

BAC 221 09

BAC 221 08

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Fairey Delta FD2 Walk Around
Fotograaf	Meindert de Vreeze
Lokaliseerimine	Teadmata
Fotod	25

General Characteristics and Role

The BAC 221 was a highly specialized British research aircraft developed to support the Concorde supersonic transport program. It was not a “new” airframe from scratch, but rather a total reconstruction of the record-breaking Fairey Delta 2 (WG774). The primary objective of the BAC 221 was to investigate the aerodynamic behavior of the ogival (ogee) slender delta wing at high speeds. This specific wing shape was critical for Concorde’s success, balancing high-speed efficiency with manageable low-speed handling. The aircraft featured a significantly lengthened fuselage and a much taller landing gear to accommodate the high angles of attack required during landing.

Property	Typical Value (BAC 221)
Tüüp	Experimental Supersonic Research Aircraft
National Origin	Ühendkuningriik
Tootja	British Aircraft Corporation (BAC)
First Flight (Rebuilt)	May 1, 1964
Meeskonna	1 (Pilot)
pikkus	17.56 m (57 ft 7 in)
Tiibade siruulatus	7.62 m (25 ft 0 in)
Maximum Speed	Mach 1.65 (Approx. 1,700 km/h)

Powerplant and Wing Design

Engine: 1 x Rolls-Royce Avon RA.28R afterburning turbojet.
Engine Thrust: 10,000 lbf dry / 14,000 lbf with reheat.
Ogival Wing: The centerpiece of the modification, this “ogee” wing replaced the straight-tapered delta of the FD2 to mimic the planned planform for Concorde.
Landing Gear: To handle the nose-high landing attitude of the slender delta, a completely new, taller undercarriage was fitted, utilizing components from the English Electric Lightning.
Droop Nose: Retained and refined from the Fairey Delta 2, the entire cockpit and nose section could be tilted downwards to allow the pilot to see the runway during approach.
Instrumentation: Equipped with extensive flight-test sensors and a camera mounted in a fin-tip fairing to record airflow patterns over the wing using wool tufts.

Service History and Preservation

RAE Bedford: Following its maiden flight, the aircraft was delivered to the Royal Aircraft Establishment (RAE) at Bedford, where it conducted nearly a decade of high-speed trials.
Flight Research: While the Handley Page HP.115 tested the low-speed characteristics of the delta wing, the BAC 221 provided the vital supersonic data needed to finalize the Concorde’s flight control systems.
Retirement: The aircraft was retired in 1973 after the Concorde prototypes had already begun their own successful test flights.
Current Status: Today, the BAC 221 is preserved and on display at the Fleet Air Arm Museum in Yeovilton, Somerset. It is positioned directly alongside the British Concorde prototype (G-BSST), allowing visitors to see the direct evolution of the wing design.