Off-airfield plane with the aerostatic unloading with lood caparcity from 20 to 400 tones (hybrid airship) "Fialka"

Aircraft's design and features

The author of the project, as a result of the theoretical and experimental research, was able to come up with the conceptual design of a flying device combining the best qualities of an airship, a plane, a helicopter and a hovercraft.

This aircraft is a mixed type "flying wing " the basic part of which is the diskshaped centerplane. In general it serves as a receptacle of elevating gas (helium). In the channel of its center there are a jacking system and a cargo cabin and on the edges there are a pilot-passenger cabin, cantilevered wings and a tail. The combined takeoff and landing device is placed underneath: wheel and ski bearers and air cushioned landing gear.

The disk shape of this aircraft allows to reduce the overall dimensions of gas tankage body by 3,0 to 3,5 times in comparison with the classical cigar-shaped form of an airship and at the same time to reduce considerably the lateral air blown surface.

Presence of plane elements such as the cantilevered wing and tail provides necessary stability and controllability in a horizontal flight, and due to load-bearing properties of the cantilevered wing and diskshaped body together with aerostatic unloading of the design achieves high transport efficiency on weight feedback and specific productivity.

Positioning the propeller in the central channel of the disk allows to realize the properties of vertical takeoff airplanes, including helicopters.

Presence of elements of an air cushioned plane, air cushioned landing gear alongwith supercharger activated by the propeller, provides for off-airfield operations and basing of aircrafts, i.e. movement, landing and takeoff from water, marshes, any flat ground, snow covered surface, etc.

Absense of a regular airfield and presence onboard of the technological self-servicing block-module placed in a cargo cabin, ensures the autonomy of operation: there is no need for docking facilities and tiedown devices, takeoff and landing runways, platforms and other elements of the infrastructure, typical for regular airships, planes and helicopters.

Positioning of the elevating powerplant in the channel of the disk and the cruise engine on the back part of the disk - centerplane allows to create the most successful configuration of the powerplant as a whole, providing all the necessary thrust characteristics during all flight regimes with simultaneous support of stabilization and control.

Three principles of creating the lifting force: aerostatic, aerodynamic and jet, used on this aircraft, possibility of landing on an all-terrain flat surface, airflow over the systems of control and stabilization generated by the powerplant's propellers, rather low specific loading on bearing surfaces with simultaneous use of modern aviation control systems and navigation allow to achieve high reliability and safety of operation.

Thus, the given concept of a heavy load-carrier, being built on the basis of modern achievements in aviation engine building, control systems, constructional materials and technologies can be realized already today.

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Major advantages

The basic advantages of a plane with aerostatic unloading in comparison to a regular one are:

• takeoff and landing from any natural terrestrial surface: sea, lake, river, marsh, farm field, runway, highway etc.;

• the super short takeoff run and landing roll with a possibility of vertical takeoff and landing;

• high load ratio: 1,5 - 2,0 times higher if compared to the turbojet transport planes such as "IL - 76" and 2,5 - 3,5 times higher in comparison with the turbo-propeller planes such as "AN";

• the empty design has 20 - 70 % aerostatic unloading depending on type/size;

• cargo-passenger delivery to the remote regions of Russia: Far North, Eastern Siberia and the Far East;

• global flight range with an opportunity of cargo delivery to any place on the Earth without refueling;

• delivery expenses are similar to those of a railroad;

• expensive airport infrastructure is excluded: service is carried out with the help of the mobile technological blocks - modules established in any part of the Earth;

• highly effective in preventing and liquidation of emergency situations of natural and technogenic character such as: industrial and forest fires, earthquakes and flooding, sea spills of petroleum and oil products, etc.

Basic geometrical data

Comparative data: Fialka - 10

Comparative data: Fialka - 15

Comparative data: Fialka - 20

Comparative data: Fialka - 25

Comparative data: Fialka - 30

Comparative data: Fialka - 35

The plane Fialka -35 AN-124 AN-225 Takeoff weight, m 493 405 600 Weight of an empty (equipped) plane, т 123 - - Aerostatic volume, thousand m3 89 - - Powerplants: Total capacity, kw, or thrust, ( daN/m2), including: 44670 92000 138000 cruise engine 4х7175 4x23000 6x23000 lifting 2х7980 - - Quantity, type and mark of engines: cruise engine 2GTD D-136 4TRDD D-18T 6TRDD D-18T lifting 2GTD D-136 - - Load on propeller airblown area, ( daN/m2) 70 - - Cruise speed, km/hr 180 800-850 700-850 Flight altitude, km up to 3 10-12 10-12 Ferring range, km 40000 16500 14700 Mission payload, т, at range 286 at L=4500 417 at L=1000 125 at L=4500 200 at L=4500 Full weight feedback, % 93 - - Aerostatic unloading of an empty structure, % 72 - - Dimensions: length, m 168 69 84 span, m 165 74 89 height, m 47 21 18 Takeoff-landing data: liftoff speed, km/hr 55-60 240 250 landing speed, km/hr 55-60 250 260 takeoff run, m 175 - - landing roll, m 140 - - runway (strip) requirements any natural platform: lake, river, bog, farm field etc specially prepared runway with high bearing ability specially prepared runway with high bearing ability Data technical charts Development prospects The following conclusions can be drawn with the respect to the data given above. Introduction of the off-airfield plane with the aerostatic unloading opens wide prospects of development of the air transport on essentially new technological level. Usage of such aircraft as an air vehicle will allow: to reduce significantly consumption of the hydrocarbonic raw material used by the air transport in general; to stop using expensive airport facilities and at the same time to reduce substantially the cost of running operations there; to give up the construction of railroads and highways on the Far North, Siberia and the Far East of Russia; the air transport to become an alternative (with the use of such aircrafts) to the Northern sea transport; to lower significantly transport expenses at the development of oil and gas fields in the remote regions of Russia; to provide effective protection of the population in extreme situations of technogenic and natural character.