The Pup was designed as a single-engined all-metal two-seat aerobatic aircraft or a four-seat touring aircraft. The Pup was more spacious than its direct competitors and was more of a "pilot's aeroplane"; it was a more complex design to manufacture and was also corrosion proofed throughout. For these reasons it was correspondingly more expensive to build, yet was sold at a competitive price. Beagle Aircraft Ltd chose to build the Pup following a market survey which demonstrated a global requirement for a modern, all-metal 2–4 seat training/touring aircraft to replace aging Tiger Moths and Pipers used by flying clubs. American manufacturers were already fulfilling this demand with aircraft such as the Cessna 150, 172 and the Piper Cherokee. in October 1970
Development
The prototype Pup first flew from Shoreham Airport on 8 April 1967. The second prototype, the first more powerful Pup 150 with seating for an extra adult, was first flown on 4 October 1967, followed by the third prototype, another Series 2, on 17 January 1968. The Series 2 aircraft were fitted with an enlarged rudder which became standard on all production aircraft. G-AVLM was converted during 1968 to become the Series 3 prototype aircraft with a further enlarged rudder. Because these aircraft types were identical from behind the engine firewall, the Series 1 was heavier than it needed to be. This penalized its performance which was described as less than "sporty". Another issue affecting the Pup was unreliability, due to both poor design and to poor workmanship, and the unavailability of spares. These problems included fuel leaks, cockpit door failures and brake and undercarriage issues. However, the main issue as the Pup developed was the cost of production. Flight magazine, commenting on the uneconomic construction, said that the Pup "appears to be designed not for production but as a one-off special in which cost was no object". Beagle had planned to achieve a basic manhour figure of 780 hours per aircraft by the 250th aircraft, but they were well behind the learning curve to achieve this. It was estimated in November 1969 that the production cost per aircraft for the first 150 was £8,850, over double the selling price, and that break-even would be achieved after 4,000 aircraft.
Production and Sales
The first delivery was to the Shoreham Flying School on 12 April 1968. The aircraft was popular and sold to flying clubs and private users worldwide. Deliveries were made to civilian operators in several countries including Australia, Iraq, Sweden and Switzerland. The Series 3 variant, a four-seater, was developed for the Iranian Civil Air Training Organisation. By 1969 production had increased at Shoreham to one Pup a day; aircraft were flown to either Rearsby Aerodrome or Cambridge Airport for painting and finishing. In December 1969 the government withdrew financial support for Beagle and the company was placed in receivership. Over 250 Pups were on order but Beagle production ceased with the 152nd aircraft. Some remaining nearly-completed aircraft were finished at a variety of locations, the last being HB-NBA, first registered 8 March 1977, making a total of 175 Pups completed. About 40 incomplete fuselages were sold as scrap.
Bulldog
It was always the intention of Beagle to make a military version of the Pup to replace the Chipmunk in particular. Earlier proposals for this were superseded following the interest of the Swedish Armed Forces in 1967 when they assessed the Pup 150. In consequence the design was improved significantly and evolved into the Beagle B.125 Bulldog with a Lycoming engine. The first prototype made its first flight at Shoreham on 19 May 1969 and on 12 June 1969 the Swedes ordered 58 Bulldogs with an option on 45 more; this was followed by two further orders from Zambia and Kenya. The Bulldog was also being assessed by the RAF, the RAAF and the Iraqi Air Force at the time when Beagle ceased operations. Only one prototype aircraft was completed by Beagle ; in 1970 the design and production was taken over by Scottish Aviation together with the Swedish order.
Variants
;Pup Series 1 ;Pup Series 2 ;Pup Series 3 ;Bulldog
