| 摘要 |
FIELD: variable-geometry semi-rigid airships with thermal ballasting. SUBSTANCE: semi-rigid guided airship has soft outer envelope, rigid keel truss, differentiated reservoirs filled with lighter-than-air gas, bow cap, gondola secured on load-bearing keel truss, power plant, control members and mooring and landing devices. Airship is provided with rigid load-bearing band with at least two rigid transverse beams secured on it. Outer envelope consists of upper and lower envelopes whose edges are secured on load-bearing band; relative height of upper envelope is selected from 0.25 to 1.0; fineness ratio of upper envelope ranges from 2.5 to 6.0; relationship of height of upper envelope to height of lower envelope ranges from 1.0 to 2.5. Inner envelope is located in center portion of casing; its lower portion is secured on keel truss and its upper edge is secured on upper envelope and is provided with devices for feeding heated gas and outside air to inner envelope and discharging them from it. Rigid load-bearing keel truss is secured on upper envelope and on load-bearing band by means of inner suspension made from longitudinally rigid members. Differentiated reservoirs filled with lighter-than-air gas are made in form of soft bottles located between outer and inner envelopes and secured on keel truss. Engines of power plant and mooring and landing devices are secured on load-bearing band. Engines of power plant are located in gondolas and are turnable for change of thrust vector vertically by angle of no less than 90 deg and horizontally by angle of no less than 30 deg. Horizontal stabilizer with aerodynamic vertical control surfaces mounted on it is secured on load-bearing band in aft portion of casing. EFFECT: enhanced reliability. |
