Avro / A.V.Roe

When the Daily Mail organised a model-flying contest at Alexander Palace, London, in March 1907, young A.V. Roe won first prize. His 8 ft tail first model flew more than 100 feet.

Avro Article

Alliott Verdon Roe, after a varied career in surveying, tree-planting, fishing, post-office management and marine engineering began aircraft design in 1906. Spurred by winning £75 in a model aircraft contest held in London in 1907. Roe built a full-size biplane, which made some tentative hops from the motor racing circuit at Brooklands in 1908.

Moving to an abandoned railway arch on Lea Marshes in Essex, he built the Roe I Triplane which weighed less than 91 kg (200 lb) and was covered in brown wrapping paper. He called it the Bull’s-Eye Avroplane after the brand-name of men’s trouser braces whose manufacturer had supported him. In July 1909 the Roe I Triplane made the first official powered flights in Britain by an all-British aircraft.
Alliott Roe subsequently developed three other triplane designs, one of which he flew (and crashed three times) at the great Boston-Harvard Aviation Meeting of 1910.

A.V. Roe and Company was established at Brownsfield Mill, Great Ancoats Street, Manchester, by Alliott Verdon Roe and his brother Humphrey Verdon Roe on 1 January 1910. Humphrey’s contribution was chiefly financial and organizational; funding it from the earnings of the family webbing business and acting as Managing Director until he joined the RFC in 1917.

In the summer of 1910 A. V. Roe and Company declared its willingness to build aeroplanes to other people’s designs and the first such aircraft was a Farman-type biplane for a Bolton business man. The Farman-type evidently did not meet with much success as 18 months later, at the end of 1912, the engine and airframe were advertised for sale in new condition for £45 and £60 respectively. Bolts, fittings and bracing wires were also supplied to Miss Lilian Bland who built and flew the Mayfly biplane of her own design at Carnamony, Belfast. Each of these aircraft was fitted with one of the few examples of the 20 h.p. two cylinder, horizontally opposed, air cooled Avro engines. These were never given an Avro designation.

A.V.Roe carried out numerous experiments with all kinds of plane sections with varying cambers, etc. These were sold off in November 1911 at peppercorn prices for gliders.

The first Avro aircraft to be produced in any quantity was the Avro E or Avro 500, first flown in March 1912, of which 18 were manufactured, most for the newly-formed RFC. The company also built the world’s first aircraft with enclosed crew accommodation in 1912, the monoplane Type F and the biplane Avro Type G in 1912, neither progressing beyond the prototype stage. The Type 500 was developed into the Avro 504, first flown in September 1913. A small number were bought by the War Office before the outbreak of the First World War and the type saw some front line service in the early months of the war, but is best known as a training aircraft, serving in this role until 1933. Production lasted 20 years and totalled 8,340 at several factories: Hamble, Failsworth, Miles Platting and Newton Heath.

By 1913 the company had become registered as A.V.Roe & Co. Ltd.

After the boom in orders during the First World War, the lack of new work in peacetime caused severe financial problems and in August 1920, 68.5% of the company’s shares were acquired by nearby Crossley Motors who had an urgent need for more factory space for automotive vehicle body building.

In 1924, the Company left Alexandra Park Aerodrome in south Manchester where test flying had taken place during the period since 1918 and the site was taken over by a mixture of recreation and housing development. A rural site to the south of the growing city was found at New Hall Farm, Woodford in Cheshire, which continued to serve aviation builders BAE Systems until March 2011.

Cierva Autogiro production started in Britain at A. V. Roe’s Hamble factory in 1926.

In 1928 Crossley Motors sold AVRO to Armstrong Siddeley Holdings Ltd. In 1928, A.V.Roe resigned from the company he had founded and formed the Saunders-Roe company that after World War II developed several radical designs for combat jets, and, eventually, a range of powerful hovercraft.

In 1928 Avro acquired a license to build the Fokker F.VIIB/3M as the Avro 618 Ten: it carried eight passengers and two crew, and orders included five for Australian National Airways. Rivaling the success of the 504 was the twin-engined Anson trainer and coastal patrol monoplane, flown as the Avro 652 civil transport for Imperial Airways in 1935.

In 1935, Avro became a subsidiary of Hawker Siddeley.

More than 10,000 Ansons were built in Britain and Canada between 1935 and 1952. The twin-engined Manchester bomber of 1939, with the unproven Rolls-Royce Vulture engines, was not a success, but led to the superb four-engined Lancaster, of which 7,374 were built during Second World War. The York transport derivative mated the same wings and tail, plus a central fin, with an entirely new fuselage seating 12 passengers. The Lincoln bomber was built as a replacement for the Lancaster, entering RAF service soon after VJ-day.

Over 7,000 Lancasters were built and of the total, nearly half were built at Avro’s Woodford and Chadderton (Manchester) sites, with some 700 Lancasters built at the Avro “shadow” factory next to Leeds Bradford Airport (formerly Yeadon Aerodrome), northwest Leeds. This factory employed 17,500 workers at a time when the population of Yeadon was just 10,000. The old taxiway from the factory to the runway is still evident.

Although only ⅓ of Lancasters hit their target, the Lancasters were at the time Britain’s best bombers.

The civilian Lancastrian and maritime reconnaissance Shackleton were derived from the Lancaster design. Avro’s postwar Tudor transport was not a success. With the same wings and engines as the Lincoln, it achieved only a short (34 completed) production run following a first flight in June 1945 and the cancellation of an order from BOAC.

The company’s last piston-engined aircraft was the Shackleton four-engined maritime reconnaissance aircraft. Following production of four Avro 707 delta research aircraft, the company produced the four-jet delta-wing Vulcan bomber, which began to enter RAF service in 1956. The Vulcan saw service as a conventional bomber during the British campaign to recapture the Falkland Islands in 1982. Vulcan XH558 flew again after several years of refurbishment, and several are prized as museum exhibits. Avro’s last design before being restyled the Avro Whitworth Division of Hawker Siddeley Aviation, in 1963, was the Avro 748 twin-turboprop transport (first flown in 1960). The Royal Flight bought a few and a variant with a rear-loading ramp and a “kneeling” main undercarriage was sold to the RAF and several members of the Commonwealth as the Andover.

When the company was absorbed into Hawker Siddeley Aviation with Folland, Gloster, Armstrong Whitworth, and de Havilland in July 1963, the Avro name ceased to be used. The brand still had a strong heritage appeal, and the marketing name “Avro RJ” (regional jet) was used by British Aerospace for production of the RJ-85 and RJ-100 models of the BAe 146 from 1994 to 2001. This aircraft type is sometimes also loosely called the “Avro 146”.
The BAe ATP (Advanced Turbo Prop) design evolved from the Avro 748. At 39 years, the Shackleton held the distinction of being the aircraft with the longest period of active RAF service, until overtaken by the English Electric Canberra in 1998.

AVI Avi 205

Prototype

Conceived as a multi-purpose aircraft equally suited for the roles of four-seat tourer, agricultural aircraft, ambulance, school trainer and glider tug, the AVI 205 flew for the first time in September 1960, development having been initiated in October 1958. The prototype was powered by a 205 hp Continental E-185-9 engine, but the production model was to have a 225 hp Continental E-225-8 engine driving a metal variable pitch propeller, and modified undercarriage.

For liquid spraying or dusting operations a jettisonable tank or hopper was to be attached beneath the fuselage.
The AVI 205 is of all-metal construction with fabric covering.

Prototype
Engine: 205 hp Continental E-185-9
Span: 37 ft 5.25 in
Wing area: 215.278 sq.ft
Length: 26 ft 3 in
Height: 7 ft 2.75 in
Max speed: 139 mph at SL
Cruise 75%: 112 mph
Max range: 652 miles
Empty weight: 1433 lb
MAUW: 2645 lb

Production model
Engine: 225 hp Continental E-225-8
Propeller: metal variable pitch
Span: 37 ft 5.25 in
Wing area: 215.278 sq.ft
Length: 26 ft 11 in
Height: 7 ft 2.75 in
Max speed: 151 mph at SL
Cruise 75%: 132 mph
Max range: 756 miles
Empty weight: 1620 lb
MAUW: 2790 lb

Prototype

AVIS III / AVIS IV           

Developed in parallel with the AVIS II and entering flight test shortly afterwards in 1935, the AVIS III was powered by a 550hp Manfred Weiss-built Gnome- Rhone 9Krsd Mistral nine-cylinder radial engine driving a three-bladed adjustable-pitch Hamilton Standard propeller. Unlike the preceding AVIS fighters which were of all-metal construction, the AVIS III had wooden wings with a combination of plywood and fabric skinning, and four prototypes were laid down. The AVIS III demonstrated improved characteristics, but lacking the agility of the Fiat CR.32, which was meanwhile evaluated by the Legilyi Hivatal and adopted for service, it was not ordered into production. The armament of the AVIS III was two 7.62mm Gebauer machine guns, and one of the four prototypes was completed with minor modifications as the AVIS IV.

AVIS III
Engine: 1 x 700hp Weiss/Gnome Rhone 9Krsd
Wingspan: 9.50 m / 31 ft 2 in
Length: 7.80 m / 26 ft 7 in
Height: 3.20 m / 11 ft 6 in
Wing area: 20.20 sq.m / 217.43 sq ft
Max take-off weight: 1380 kg / 3042 lb
Empty weight: 1210 kg / 2668 lb
Max. speed: 310 km/h / 193 mph
Cruise speed: 256 km/h / 159 mph
Ceiling: 6500 m / 21350 ft
Range: 400 km / 249 miles
Crew: 1
Armament: 2 x 7.62mm mm

AVIS II

The poor results achieved with the AVIS I fighter prompted Prof Abody-Anderlik and his team to redesign the aircraft despite the decision of the Legilyi Hivatal to acquire 21 Fiat CR.20bis fighters from Italy. While retaining the Jupiter VI engine, the redesigned fighter, the AVIS II, featured a slimmer, slab-sided fuselage, redesigned vertical tail surfaces, narrower interplane bracing struts and increased gap. Empty weight was reduced by 100kg and, after initial trials, the engine was enclosed by a Townend ring. The AVIS II commenced flight test early in 1935, but still proved overweight and lacking in the agility demonstrated by contemporary foreign fighters. The planned armament of twin 7.62mm Gebauer guns was never fitted. Development was abandoned in favour of the higher-powered AVIS III.

Engine: 1 x 420hp Weiss Jupiter VI
Wingspan: 9.00 m / 30 ft 6 in
Length: 7.80 m / 26 ft 7 in
Height: 2.90 m / 10 ft 6 in
Wing area: 21.20 sq.m / 228.19 sq ft
Take-off weight: 1320 kg / 2910 lb
Empty weight: 1110 kg / 2447 lb
Max. speed: 300 km/h / 186 mph
Range: 500 km / 311 miles

AVIS I

During the course of 1931, the Central Repair Workshops at Szekesfehervar-Sosto began construction of the AVIS (Anderlik-Varga-Iskola-Sport) aircraft, ostensibly a single-seat trainer and sports aircraft, but, in fact, a fighter intended for use by the Legtiyi Hivatal (Aviation Department), the clandestine Hungarian air arm. An all-metal, single-bay, staggered biplane designed by Prof Elöd Abody-Anderlik, Laszlo Varga, Istvan Liszt and Deszo Fridrik, the first aircraft, the AVIS I, was completed and flown in 1933. Powered by a 420hp Manfred Weiss-built Jupiter VI nine-cylinder radial, intended armament being twin synchronised 7.62mm Gebauer machine guns, the AVIS I proved seriously underpowered, prompting major redesign as the AVIS II. The sole example of the AVIS I was eventually delivered to the flying school at Szombathely where it was to serve until 1936.

AVIS I
Crew: 1
Engine: 1 x 420hp Weiss Jupiter VI
Wingspan: 9.00 m / 30 ft 6 in
Length: 7.50 m / 25 ft 7 in
Height: 3.40 m / 11 ft 2 in
Wing area: 21.20 sq.m / 228.19 sq ft
Max take-off weight: 1480 kg / 3263 lb
Empty weight: 1260 kg / 2778 lb
Max. speed: 280 km/h / 174 mph
Cruise speed: 233 km/h / 145 mph
Ceiling: 5200 m / 17050 ft
Range: 320 km / 199 miles
Armament: 2 x 7.62mm mg

AviPro Aircraft / R&B Aircraft Co / Bearhawk Aircraft Bearhawk / Bearhawk Companion

Designed by Robert Barrows of Fincastle, Virginia, the Bearhawk is a 2 or 4-place design. The design parameter were for a heavy hauling BIG airplane with a good cruise speed and economical operation. Short field performance is excellent with the large flaps. The Bearhawk prototype Bearhawk N6890R is powered by a Lycoming 0-360 (170 hp) set up to burn auto fuel.

The Bearhawk was designed as a personal project by Barrows to carry aircraft engines for delivery as freight for his engine rebuilding business in 1995. It features a strut-braced high-wing with an enclosed cabin accessed by doors, fixed conventional landing gear and a single engine in tractor configuration.

The aircraft fuselage is made from welded steel tubing covered in doped aircraft fabric, while the wings are made from aluminum sheet. Its 33 ft (10.1 m) span wing employs a NACA 4412 mod airfoil, has an area of 180 sq ft (17 m2) and mounts flaps. The aircraft’s recommended engine power range is 150 to 260 hp (112 to 194 kW) and standard engines used include the 180 hp (134 kW) Lycoming O-360 and 250 hp (186 kW) Lycoming O-540 four-stroke powerplants. Construction time from the supplied kit is 1200 hours.

With a 52 inch cargo door, the Bearhawk has a 12 inch C of G envelope. The painted 4130 tube fuselage is ready for covering, giving an actual builders’ time of 850-1200 hours. The all metal wings are 90% factory riveted, with solid rivets. Useful load ranges from 1,000-1,300 pounds and can carry four adults and full fuel. The back seat can be removed resulting in a huge cargo area with unobstructed access. Not only does the back seat have its own door, but also the door combines with the cargo door to allow a six-foot loading area.

The Bearhawk has an all metal wing with a fabric covered steel tube fuselage and tail feathers. The modified 4412 airfoil combined with big flaps and a long, all metal wing offer the best combination for short field take off and landings. A Cessna windshield, modified lift struts, and the fiberglass nose bowl are some airframe components that need not be built by the homebuilder. The builder time is estimated at 1500-2000 hrs. The Bearhawk kit plane is available in a “quick build” kit. Some Bearhawk owners have put the big tundra tires on their airplanes, and operate on the remote landing spots used by bush pilots in Alaska.

The Bearhawk useful load (depending on engine and builder finish out) ranges from 1100-1500 lbs. The 50 USgallon main fuel tanks can be filled and four full sized adults carried with room left over for 250 lbs of baggage or cargo.

The back seat can be removed resulting in a huge cargo area with unobstructed access. Not only does the back seat have its own door, but the back door combines with the cargo door to allow a six foot loading area. In addition, the back seat can be flipped around and mounted with the seat facing aft. This moves the CG of the rear seat passengers 8 or 9 inches forward.

The two prototype Bearhawks (180 hp & 260 hp) have accumulated well over 1000 hours of flight time. There are at least two Bearhawks built by builders with over 700 hours on them.

Introduced in 1995, plans were offered for sale and over 1400 sets of plans have been sold. By November 2012 66 examples had been registered in the United States with the Federal Aviation Administration and seven with Transport Canada. There are over 100 Bearhawks flying in the USA and around the world. The kit only price in 2011 was US$35,295.

The plans are now included at no additional cost with the purchase of a full Quick Build kit for the Bearhawk or Patrol.
If less than a full QB kit is purchased, then the plans must be bought from R & B Aircraft (Bob Barrows).

The Bearhawk can be built from plans alone, built from a Quick Build kit made by Bearhawk Aircraft, or some combination of the above. According to Bob Barrows, the QB kit can save up to 70% or more of the time required to build.

The price in 2014 was $295 US for the four place Bearhawk plans. Get a description of the plans or purchase plans online at http://mybearhawk.com/bearhawkplans.html

If less than a full Quick Build kit is purchased, then the plans must be bought from R & B Aircraft (Bob Barrows). The plans are now included at no additional cost with the purchase of a full Quick Build kit for the Bearhawk or Patrol.

The Patrol version can be built from plans alone, built from a Quick Build kit made by Bearhawk Aircraft, or some combination of the above. According to Bob Barrows, the QB kit can save up to 70% or more of the time required to build.

The price is $280 US for the Patrol plans, and can be paid with a money order, US personal check, Canadian Postal Money Order (US $), or international money order (US $).

Get a description of the Patrol version plans or purchase plans online at http://mybearhawk.com/patrolplans.html

Float plane flying customers suggested putting doors on both sides of the Patrol instead of just the right hand side door to allow more flexibility while docking in windy conditions,. In addition, they requested the fuselages come from the factory with the rear float attach fittings already welded in place. With these suggestions became the Patrol SP (Sea Plane). This model incorporates those two approved design changes; along with some structural strengthening by using thicker wall tubing above the rear float attach fittings. The price of this full Patrol SP Quick Build kit was US$39,700 in 2014.

Complete Bearhawk QB Kit (with optional auxillary tanks).

Prices and contents of the Full Bearhawk kits and components (2014):
Full Bearhawk Quick Build fuselage – $23,025
Includes everything that comes with the Bearhawk Quick Build Kit

BASIC FUSELAGE $11,600
The basic fuselage structure complete, but with only the most important attach fittings finish welded on. These are:
Wing attach fittings
Wing Strut Fittings
landing gear attach fittings
wing strut attach fittings
and the tail surfaces attach fittings.
A straight, true fuselage finish welded. Unpainted because there are many parts that still need to be welded on.

Bearhawk Quick Build Wings – $18,475
Includes everything that comes with the Bearhawk Quick Build Kit

WING COMPONENT KIT $7,250
Ribs formed (includes all wing, flap, aileron ribs)
All spars primed, assembled and finished

Patrol kit pricing (2014)
Basic QB Kit – $30,825
(Some welding required)
Includes: Quick-build Wing Kit – Basic Fuselage Kit
Deluxe QB Kit – $39,105
(No welding required)
Includes: Quick-build Wing Kit – Deluxe Fuselage Kit
Quick-Build Wing Kit – $17,305 These wings are sold in an advanced level of completion. The top skin is completely finish riveted. The forward edge of the bottom skin is finish riveted to the bottom flange of the main spar, and aft of the main spar the bottom skin is drilled and dimpled as are the ribs the bottom skin is riveted to. The bottom skin is pop riveted (with a few pops) for shipment. Spars and all spar parts are alumi-prepped, alodined, and primered with MIL-P-23377E strontium chromate epoxy primer. Wing skin interiors and all ribs are primered with Zinc Chromate. Steel parts in the wings are primered with epoxy primer and top coated with MIL-C-22750D epoxy paint. Quick Build wings come with ailerons and flaps 90% finished, but still requiring fabric covering. Fuel tanks are included,but must be installed.

Basic Fuselage – $15,500 Welding required. Includes finish welded fuselage frame (unpainted) and motor mount, all major fittings are welded in place, tabs, sheet metal and minor fitting to be done by builder, landing gear, control stick assembly, rudder pedals and flap controls are finished. Horizontal stabilizer, elevator and rudder are finish welded.
Deluxe Fuselage – $21,800 No welding required by builder. The fuselage and all fittings are completed, sand-blasted and epoxy primed. All steel parts are coated with the epoxy primer and top coated with MIL-C-22750D epoxy paint. Sheet metal is included; cut and ready to be assembled, but may require some trimming. Door and frames, seat frames and the fiberglass nose bowl are included.

Builders of the Bearhawk can purchase the plans and can purchase some sub-kits or components.

The two-place side-by-side Bearhawk Companion aircraft is derived from the tandem Bearhawk Patrol wings and four-place Bearhawk 5 fuselage. The aircraft features flush rivet aluminium wings, a steel tube fuselage, and an Airfoil shaped empennage. The fuselage is slightly shorter than the Model 5.

The first flight of the Bearhawk Companion was announced in early 2021.The first flight was performed by the aircraft builder, Dave Lenart of Vermont, USA. It was built from a manufactured kit.

The Companion handles and performs much like the narrower Patrol.

Gallery

Variants:

Bearhawk
Four seat model with a cabin 42.5 in (108 cm) wide and a gross weight of 2,700 lb (1,225 kg), with 75 reportedly completed and flown by December 2011.

Patrol
Two-seats in tandem model with a cabin 32 in (81 cm) wide and a gross weight of 2,000 lb (907 kg), with three reportedly completed and flown by December 2011.

Specifications:

Engine HP range 150-260 hp
Wing span 33 ft.
Wing Area 180 sq. ft.
Length 23 ft 6 in
Empty Weight 1150-1350 pounds
Gross weight 2500 pounds (2700 pounds on floats)
Useful Load 1350-1150 pounds
Fuel Capacity 50 USG (standard) 68 USG (optional, w/aux tanks)
Vne 175 mph IAS
Cruise Speed (62% 260 hp) 150 mph TAS
Cruise Speed (180 hp) 135-140 mph TAS
Landing Speed 40 mph IAS
Takeoff Roll 200-500 ft
Rate of Climb @ gross 1,500-1,700 fpm
Range @ 65% est. 650 mi.
Range @ 50% est. 900 mi.
Cabin Width 42 in.
Cabin Length 9 ft 8 in. (firewall to back of back of baggage area)

Engine: Lycoming O-360, 170 hp
HP range: 150-260
Wing Span: 33 ft.
Wing Area: 180 ft.
Length: 23 ft. 6 in.
Height: 7 ft
Empty Weight: 1190 lbs.
Gross Weight: 2500 lbs.
Fuel cap: 55 USG
Top Speed (VNE): 175 mph
Cruise Speed: 120-150 mph
Landing Speed: 40 mph
Take Off Roll: 250-600 ft.
Range (55 gal @ 60%): 800 miles
Stall: 40 mph
ROC: 1500 fpm
Range: 800 sm
Service ceiling: 15,000 ft
Cabin Width: 42 in.
Cabin Length (Firewall to the end of baggage area): 9 ft. 8 in
Cockpit width: 30 in
Landing gear: tail wheel
Seats: 4

Engine: 180 hp.
Hp range: 150-260
Useful load: 1300 lb
Cruise 60% pwr: 134 mph
Cruise 75% pwr: 145 mph
Stall: 40 mph

Bearhawk
180hp
Wing span: 33 ft
Wing Area: 180 sq. ft
Length: 23 ft. 6 in
Empty Weight: 1150-1550 lb
Gross weight: 2500 lb
Gross weight w/floats: 2700 lb
Useful load: 1100 lb
Vne: 175 mph, IAS
Cruise 60% pwr: 135 mph
Cruise 75% pwr: 145 mph
Touchdown speed: 40 mph
Range std tanks: 650-800 mile
Range aux tanks: 850-1000 mile
Range @ 65% est: 650 mi.
Range @ 50% est: 900 mi.
Fuel std: 50 US gals
Length: 9 ft 8 in
Takeoff Roll: 200-500 ft
Rate of Climb @ gross: 1,500-1,700 fpm
Cabin Width: 42 in
Cabin Length: 9 ft 8 in
Cargo door: 52 in
CG envelope: 12″
Seats: 4

Engine: Lycoming O-540, 250 hp.
Hp range: 150-260
Length: 23.5 ft
Wingspan: 33 ft.
Wing area: 180 sq.ft.
Empty wt: 1400 lbs
Mtow: 2500 lbs.
Useful load: 1100 lb
Seats: 4
Fuel cap: 50 USG
Cockpit width: 42.5 in
Landing gear: tailwheel
Cruise 62% pwr: 150 mph
Cruise 75% pwr: 160 mph
Stall: 40 mph
Std Range: 650-800 sm
Opt Range: 850-1000 sm
ROC: 1700 fpm
TO dist: 400 ft.
Ldg dist: 350 ft

Bearhawk
Engine: 1 × Lycoming O-540, 250 hp (190 kW)
Propeller: 2-bladed constant speed
Length: 23.5 ft (7.2 m)
Wingspan: 33 ft (10 m)
Wing area: 180 sq ft (17 m2)
Airfoil: NACA 4412 mod
Empty weight: 1,400 lb (635 kg)
Gross weight: 2,700 lb (1,225 kg)
Fuel capacity: 50 U.S. gallons (190 L; 42 imp gal)
Cruise speed: 155 mph (135 kn; 249 km/h)
Stall speed: 40 mph (35 kn; 64 km/h)
Range: 625 mi (543 nmi; 1,006 km)
Rate of climb: 1,700 ft/min (8.6 m/s)
Wing loading: 15 lb/sq ft (73 kg/m2)
Crew: one
Capacity: three passengers

Bearhawk
250 hp
Wing span: 33 ft
Wing Area: 180 sq. ft
Length: 23 ft. 6 in
Empty Weight: 1150-1550 lb
Gross weight: 2500 lb
Gross weight w/floats: 2700 lb
Useful load: 1300 lb
Vne: 175 mph, IAS
Cruise 62% pwr: 150 mph
Cruise 75% pwr: 160 mph
Touchdown speed: 40 mph
Takeoff dist: 400 ft at 2,500 lb
Range std tanks: 650-800 mile
Range aux tanks: 850-1000 mile
Fuel std: 50 US gals
Fuel aux: 72 USgals
cargo door: 52 in
CG envelope: 12″
Takeoff Roll: 200-500 ft
Rate of Climb @ gross: 1,500-1,700 fpm
Range @ 65% est: 650 mi.
Range @ 50% est: 900 mi.
Cabin Width: 42 in
Cabin Length: 9 ft 8 in
Seats: 4

Bearhawk Patrol
Engine: 115 hp to 210 hp
Top speed: 165 MPH
Cruise Speed: 140 MPH
Landing Speed: 35 MPH
Take-Off Roll (Gross Wt.): 250 ft
Range (55 gal. @ 35%): 900 miles
Empty Weight: 950+ lb
Gross Weight (Utility Stds.): 2,000 lb
Wing Span: 33 ft
Wing Area: 180 sq. ft
Length: 22 ft 8 in
Height (3 pt.): 6 ft 4 in
Cabin Width: 32 in
Cabin Length: 9 ft 5 in

Bearhawk Companion
Engine: Lycoming O-360, 180 hp
Payload: 1070 lb
Cruise: 145 mph
Fuel capacity: 50 USG
Airfoil: Riblett
Stall clean: 42 kt IAS
Stall w/flap: 38 kt IAS

Bearhawk Heavy Hauler / 4 place
Engine: up to 260 hp
150+ mph
Useful load: 1350 lb
Cabin width: 42 in
Landing speed: 40 mph

Avions Fairey Firefly

An Anglo Belgian fighter aircraft, the original Felix engined Firefly I was a private venture single seat biplane fighter first flown on November 12, 1925. Although it was much faster than contemporary RAF fighters top speed 302 km/h (188 mph) it did not go into production, but an improved all metal version, the Firefly IIM, was entered for an RAF fighter competition in 1929. Apart from its construction, this differed considerably from the Mk I, having a pronounced stagger to the wings, much improved interplane and landing gear struts, modified vertical tail surfaces, redesigned turret with the stowing cradle for a ventral radiator (instead of wing mounted), and a more powerful engine (480 hp Rolls-Royce Kestrel IIS) in an aerodynamically cleaner cowling. A 0.303 in (7.7 mm) Vickers machine gun was mounted in each side of the fuselage, forward of the cockpit, to fire forwards through the propeller disc.
The Mk IIM lost the RAF competition to the Hawker Fury, but in a home based competition, against strong continental opposition, it proved superior to all its rivals and was the only one of them to demonstrate a terminal velocity dive. As a result, in 1930 Belgian’s Aeronautique Militaire ordered 45 (later increased to 88), of which all but the first 25 were manufactured by Fairey’s Belgian subsidiary at Gosselies. Deliveries began in late 1931 and were completed during 1933. Although they were no longer in first line service at the outbreak of the Second World War, about 50 were still on charge in May 1940 when Germany invaded Belgium, and took part in the brief fighting which followed. Most of the Fireflys that survived this period succeeded in escaping to France.
Fairey in Britain also built one Firefly Mk III/IIIM, a carrier version with bigger area wings, strengthened fuselage, catapult and arrester gear, bomb racks, and provision for floatplane landing gear. This competed unsuccessfully for a Royal Navy order against the Hawker Nimrod, but was later used as a practice floatplane by the 1931 RAF Schneider Trophy team. Two other Firefly IIMs were converted to Firefly IVs with 758¬hp Hispano Suiza 12 Xbrs engines.

Firefly IIM – Span: 9.60 m (31 ft 6 in). Length: 7.52 m (24 ft 8 in). Gross weight: 1490 kg (3285 lb). Maximum speed: 282 km/h (175 mph).

Firefly IV
Engine: 758¬hp Hispano Suiza 12 Xbrs