The Demkin Monoplane was the first Russian aircraft with bicycle landing gear. This was supplemented by twin outrigger wheels beneath the wing. Monoplane with uncovered fuselage. Rudder had aerodynamically compensation.
Aircraft was tested in 1910 at St.Petersburg by Georgy Konstantinovich Demkin himself (who was a law student). The aircraft only achieved short hop flights.
Engine: 1 x Anzani, 25hp
The world’s first “sailplane” was constructed by John Demenjoz of Bridgeport, Connecticut, over nearly a year of work. It had a 40-foot wingspan, 30 feet in length, and altogether weighed less than 600 lbs.
With no motor, it was to be propelled by wind only. Mr. Demenjoz was to take his machine to Old Orchard, Me., for tests of his new invention.
Original in his idea of making a plane go both ahead and into the air by the use of sails similar to those of a boat, the French inventor has calculated all the requirements of stability and was confident that with a wind of 20 miles an hour he should be able to fly. He further predicted that he will be able to fly as high as there is any wind. He estimated his craft will attain a speed of 40 miles an hour.
Designed and built by Baron Edmond de Marcay in 1911, it was referred to as the De Marcay-Moonen folding-wing monoplane.
Span: 42’8″
Length: 39’4″
Weight gross: 600 lbs
At the Concours de Sécurité of 1914, a Gnôme-powered monoplane designed by Balassian de Mana was a project to improve stability, especially in the case of engine failure, with the wings attached to the fuselage with springs so as to vary the position of the centre of lift: the wings could move fore and aft automatically or under pilot control.
The fuselage consisted only of two spars with a fabric seat slung between them. A large fuel tank mounted on the same spars provided minimal wind protection but completely blocked forward vision. The spring undercarriage was unique. Each wheel was set into a horizontal frame pivoting on the steel tube axle, the wheels forward and below the axle, with a long horn extending backwards from each frame, the end hung from two heavy shock cords attached to the underside of the fuselage.
Damaged during the qualification tests, the machine did not participate in the contest.
A high-wing monoplane with conventional tail surfaces. The ailerons and elevators are operated by a control stick, while the rudder is operated by pedals. Aluminum tubing is used throughout. The wings are built from premolded leading edge forms and preformed sheet metal structural parts. Wing and tail covering is 1.8-ounce Dacron. Complete kits require final assembly. POWERPLANT: Unitrek 140-10 mounted in pusher position aft and below the main wing. A 1:1.98 reduction unit turns a two-blade wooden Ritz propeller. Fuel is carried in a high density polyethylene tank directly behind the pilot seat on GG. LANDING GEAR: Monowheel main gear with tail skid wheel. The main wheel measures 10 inches, and the rudder-connected tail wheel is 4 inches in diameter. The DS-26 allowed 28-50 hp Rotax engines. Doped double surface wing-covering, conventional three axis airplane controls, full 3600 roll cage, all metal aircraft type structure, 20 minute set-up.
Units delivered to June 1981: 189. Price 1982: $3,860.
Delta Technology DS-26 Nomad Article
In 1984 Delta Technology had completed all design modifications on all three of the company’s Nomad and Honcho ultralights.
”The Nomad 11, Honcho 11 and Super Honcho are now ready to go, and with the completion of our new production facility, we are prepared to deliver in two to four weeks,” a company spokesman said. ”Our intent is to offer a special introduction price on.a limited number of aircraft in order to stimulate interest and awareness in the newly completed models,” he added.
Delta also reduced the price on all three models by $1,000. The Honcho 11 was $3,980, the Nomad 11 $4,380 and the Super Honcho $4,980.
The Honcho 11 features all-metal construction, traditional, strutted wing design, energy-absorbing 360 degree roll-cage fuselage, conventional three-axis controls, strong wing structure with differential ailerons, hydraulically dampened independent suspension and a 10-year lifespan on double-surface wing coverings.
This offer was good until July 31, 1984; however, a limited quantity of aircraft were available. A production number and delivery date was to be issued upon receipt of payment in full or a 50 percent deposit.
DS-26A
Wingspan, 36 ft. 1 in.
Wing area, 147.34 sq.ft.
Aspect ratio, 8.84:1.
Overall length, 22 ft.
Empty weight, 152 lbs.
Usable payload (include fuel), 210 lbs.
Wing loading, 2.46 lbs/sq.ft.
L/D power-off glide ratio, 14.5:1.
Cruise speed (85% power), 35 mph
Stall speed, 24 mph.
Approach speed, 31 mph.
Flair speed, 24 mph.
Liftoff speed, 30 mph.
Takeoff roll distance, 225 ft.
Rate of climb, 185 fpm.
Fuel capacity, 2.5 USG.
Range at cruise, 106 sm.
Engine displace¬ment, 8.2 cu.in.
Rated HP, 10 hp. S
tatic thrust, 85 lbs.
DS-26B
Engine: Solo 335, 20 hp.
Wing span: 11m.
Lenght: 5.62m.
Empty wt: 72kg.
MAUW: 185kg.
Range: 150km.
Lowell Borchers won a special Designer’s Trophy at the 1980 EAA Oshkosh Fly-In for his Delta Stingray after 6000 hours of work. The Stingray is about 70 percent plywood, 20 percent Douglas fir and 10 percent steel and fiberglass. It has a hand-carved 60/64 wooden pro¬peller and retractable landing gear. The Stingray is a take-off of John Dyke’s four-place Dyke Delta.
Gross Wt. 1075 lb.
Empty Wt. 740 lb.
Wingspan 15 ft
Length 14 ft l0 in
Engine 100-hp Continental 0-200.
Top 204 mph.
Cruise 180 mph.
Climb rate 1400 fpm.
In 1909 Arthur Delfosse built a Blériot-like monoplane with metal fuselage, powered by one of his own 24 hp three-cylinder engines. He displayed it at the Cologne aviation week and the Brussels Motor Show.
At Cye. The de la Vaux monoplane was designed and built by de la Vaux in France circa 1910.
The delta wing of the Delta Dart II uses composite construction.
Delta Dart II
Empty weight: 245 kg
Wing span: 6.24 m
Wing area: 14.4 sq.m
Fuel capacity: 70 lt
Certification: Vz
Engine: BMW 90, 90 hp
MAUW: 450 kg
Seats: 2
Max speed: 250 kph
Cruise speed: 205 kph
Minimum speed: 55 kph
Climb rate: 4.5 m/s
Fuel consumption: 7.5 lt/hr
Price (1998): 85,000 DM
On the 7th January 1910, the first airplane constructed and designed in Brazil took off for its maiden flight in Osasco, São Paulo. The aircraft was conceived by the Frenchman Demetre Sensaud de Lavaud and was very similar to the Bleriot designs. The first flight was only 6-sec long. Afterwards, several other flights followed and the airplane, known as São Paulo, attracted huge crowds during its flights exhibitions. The aircraft was 100% Brazilian-made (even the propellers and the engine were manufactured by Mr. Lavaud). It was the first of several other designs developed in Brazil and the event took place long before the country could see aircraft serial manufacturing.
