Engines – Power

Kalinin K-7

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The K-7 was an exceptionally large experimental bomber of 1933, having two faired underslung tandem-wheel landing-gear units and six engines. Designed by World War I aviator Konstantin Kalinin, the K-7 was one of the biggest aircraft built before the jet age. As originally designed the K-7 was to have engines in the undercarriage sponsons. As completed the bomber had gun positions, the bomb load and an internal staircase as well as two large wheels in each massive sponson.

It was powered by seven engines, six pulling on the wing leading edge and one pushing at the rear. The K-7 was one of the first metal aircraft with a twin-boom layout. The K-7’s control surfaces were all deflected by the use of large trim tab surfaces mounted on struts.
The K-7’s very brief first flight showed up instability and serious vibration caused by the airframe resonating with the engine frequency. The solution to this ‘flutter’ was thought to be to shorten and strengthen the tail booms, little being known then about the natural frequencies of structures and their response to vibration. On the 11th flight, during a speed test, the port tailboom vibrated, fractured, jammed the elevator and caused the giant aircraft to plough into the ground. The K-7 was said to have had a pilot, 18 crew members and one passenger when it crashed, killing all but five crew.
Undaunted by this disaster, Kalinin’s team began construction of two further K-7s in a new factory, but the project was abandoned.

Engine: 7 x M34F, 550kW
Max take-off weight: 38000 kg / 83776 lb
Empty weight: 24400 kg / 53793 lb
Wingspan: 53.0 m / 173 ft 11 in
Length: 28.0 m / 91 ft 10 in
Wing area: 454.0 sq.m / 4886.81 sq ft
Max. speed: 234 km/h / 145 mph
Cruise speed: 180 km/h / 112 mph
Ceiling: 4000 m / 13100 ft
Range: 3030 km / 1883 miles
Crew: 12
Passengers: 128

Kalinin K-5

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The K-5 had an enclosed two-seat crew cabin forward of the wing leading edge and an eight-seat passenger cabin.
260 built were produced from 1930, before production terminated in 1934.
Installed powerplants included the 335kW M-15 (Bristol Jupiter built under licence), 358kW M-22 introduced in 1931, and the M-17F of 544kW in final series aircraft. Widely used on passenger services within the Soviet Union, some K-5s were still flying in 1940.

Engine: 1 x M-22, 355kW
Max take-off weight: 4000 kg / 8819 lb
Empty weight: 2500 kg / 5512 lb
Wingspan: 20.5 m / 67 ft 3 in
Length: 15.9 m / 52 ft 2 in
Wing area: 56.3 sq.m / 606.01 sq ft
Max. speed: 190 km/h / 118 mph
Cruise speed: 150 km/h / 93 mph
Ceiling: 4500 m / 14750 ft
Range: 800 km / 497 miles
Crew: 2
Passengers: 6

Kalbermatten Woopy

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The Kalbermatten Woopy is a Swiss high-wing, single-place, hang glider that was designed by Laurent de Kalbermatten of Villars-sur-Glâne, Switzerland. The price was about 15’000CHF and ready to fly about 10 minute.

The Woopy fuselage is made from aluminum tubing, with a conventional tail, a seated pilot position and weight shift controls. The wing is inflatable and based on the same concept as an air mattress, kept inflated by two small battery-powered fans. Launch and landing is carried out on foot.

Much of the development was undertaken using scale flying models to speed construction and reduce pilot risk.
Two models were developed, the Woopy Fly and the Woopy Jump, plus a powered version of the Woopy Fly.
The Woopy Fly aircraft was developed in Siberia and can be assembled in 15 minutes, the wing is inflated by two small electric fans underneath the wing, and it is powered by small 20 hp engine.

Variants:

Woopy Fly
Initial model
Wingspan: 9.7 m (31.8 ft)
Aspect ratio: 4.58:1
Wing area: 20.5 sq.m (221 sq ft)
Empty weight: 17 kg (37 lb)
Glide ratio: 9:1

Powered Woopy Fly
Engine: HE R120 120 cc two-stroke, 20 hp
Propeller: 70 cm (28 in)
Empty weight: 123 lbs (56 kg)
MTOW: 240 lbs (109 kg)
Cruise speed: 32 kts / 37 mph / 59 kph
Stall speed: 23 kts / 26 mph / 43 kph
VNE: 40 kts / 46 mph / 74 kph
Take-off distance: 197 ft (60 m)
Landing distance: 164 ft (50 m)
Fuel consumption: 1 GPH (3.8 LPH)

Woopy Jump
More portable development model
Empty weight: 7 kg (15 lb)
Folded length: 160 cm (63 in)

Kaiser DEKO-9 Magic / Dakomat Deko 9 Magic / Deko 9 Magic

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A single-seat aerobatic sports and recreation biplane, the prototype aircraft developed on order from the German Kaiser-Flugzeugbau GmbH. The construction of the prototype, strength tests and flight tests carried out in Military Aviation Plant No. 3 Deblin (later called the Military Aviation Plant No. 1 SA branch) in Dęblinie, Poland. The design work, construction of prototypes and the necessary infrastructure took from 1996 to 1998.

The team headed by Lt.-Col. MSc. Wieslaw Pochylskiego, established a composites laboratory and strength tests, and a thermal tent enabling the study of metal-composite structures at elevated temperatures. Other members included Dr. Eng. Marek Debski and M. Sc. Christopher Kotliński. Builders and MSc. Marian Jakoniuk, MSc. Witold Wiraszka, Eng. Bruno Biernacki and Dr. Eng. Daniel Debski.

Calculations and strength tests were conducted by M.Sc. Vladimir Urbaniak – load, dr. Andrew Szot, MSc. George Mularczyk – static strength tests, Dr. Eng. Wojciech Hajec, MSc. James Kulecki – model airplane spin research, Warsaw University of Technology.

A biplane, the crew seats in tandem with a one-piece canop, and with a fixed main landing gear and tail wheel. The supporting structure of the fuselage is duralumin tube in composite nodes. The wings are double-girder construction with beams made of duralumin tubes and fixed to them duralowej pressed sheet metal ribs. The tail is welded construction made of thin-walled steel pipes. Polish made aircraft are overed with a heat-shrinkable polyester fabric, Dekonit 140 g / m².

First flight of the aircraft on 30 September 2000 and flight tests were performed by test pilot, MSc. , Maciej Aksler. The aircraft was presented at exhibitions air: ILA Berlin 1998 and 2000 and Fredrichshafen AERO 1999 and 2001.

ILA Berlin 2000

The engine of six produced by PZL Rzeszow was the 200 hp PZL Franklin 6A-350C1R , suitable for inverted flight and driving a three-bladed MT-Propeller MTV-9-DC / C188-18a propeller with hydraulically controlled pitch.

Also developed of four-cylinder Franklin 4A-235B4 92 kW (125 hp) powered version with open cockpit.

Engine: PZL Franklin 6A-350C1R, 205 hp (150 kW)
Span: 6.8 m
Length: 6.5 m
Height: 2.2 m
Wing area: 15.4 m²
Empty weight: 500 kg
Useful load: 250 kg
MAUW: 750 kg
Fuel capacity: 100 lt
Max speed: 220 km / h (119 kts IAS)
Cruising speed: 190 km / h (103 kts IAS)
Minimum speed: 90 km / h (49 kts IAS)
Vne: 350 km / h (189 kts IAS)
Rate of climb: 12 m / s (2362 ft / min)
Ceiling: 4000 m (13123 ft)
Range: 700 km (378 nm)
Take-off dist: 120 m (393 ft)
Landing dist: 120 m (393 ft)
Load factor design: + 6 / -3 g
Seats: 2

Deko-9 Magic

Kahnt Falke / Falcon

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Thirteen meter span monoplane – with which two passengers could be carried beneath the pilot – built by Oswald Kahnt in Leipzig-Lindenthal. Kahnt was taught to fly by Hans Grade and opened the “1. Sächsische Fliegerschule” in Leipzig. Apart from some Grade machines, he built this monoplane during 1911. The power-plant used was initially a 45 hp Oerlikon; later a 70 hp Schröter inline engine was installed. With his “Falke”, Kahnt flew over the “Völkerschlachtdenkmal.” As head pilot at the Gothaer Waggonfabrik during the war, he was killed in a crash.

Juvigny 1914 Canard

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The Canard was a design of Pierre Juvigny which was in the list of about 56 enlisted competitors of the Concours de sécurité 1914 which was published on 17 January 1914. The Concours started in June 1914, but the Juvigny Canard was not ready for competition.

It is noted that the jury nevertheless inspected the incomplete machine (unable to compete) and inspected the variable incidence mechanism of the wing. Due to the weight of the engine and ancillary equipment the machine stood with the nose high when on the ground. There is no information that it took to the air and after the outbreak of the war in begin August 1914 experiments were presumably halted.

Just Aircraft 103

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Troy Woodland designed the Just 103 to conform to the FAA Part 103 requirements for ultralight aircraft, including a maximum weight of 254 pounds, a single seat, and a top speed of 63 mph. The new ultralight logged 1.5 hours before heading to the Sun ‘n Fun International Fly-In and Expo. Other than a narrow windscreen, the pilot is very much out in the open air, “which was typical with a lot of earlier Part 103 designs”.

A Polini Thor 250 engine from Italy supplies 37 horsepower at 7,500 rpm, and retails for less than $4,000. Woodland also expected to mount a Rotax 582, which would push the aircraft beyond the ultralight limits and require registration as a light sport or experimental light sport aircraft.

The company was to sell the Just 103 as a kit or ready-to-fly from the factory in Walhalla, South Carolina.