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US4095759A Expired / Lapsed US ⏱️ 0.0 years remaining

Device for stabilization of captive aircraft

Assignee: Dornier GmbH
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Filing: 1976-05-06
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Granted: 1978-06-20
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Expires: 1996-05-06
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Abstract

Abstract This invention relates to an improvement in a device for the stabilization of a captive aircraft with a drive unit for rotor blades which produce lift with the aid of thrust, wherein a mooring line engages below the aircraft center of gravity, and wherein the device includes a control device intervening in the drive unit and the rotor blades for producing thrust, The improvement comprising A position regulator and translation damper for the purpose of influencing controls for the rolling and pitching axes, An angular velocity regulator for the purpose of influencing yaw control, and A cable line traction regulator operating in dependence upon cable line traction in immediate proximity to the aircraft, and in dependence upon an output or power regulator for the drive unit, for the purpose of influencing output power regulation and the rotor blades for producing lift.

Inventors

  • 👤 Heinz Woitschella
  • 👤 Wolfgang Reuter
  • 👤 Rolf Swik

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 19:21
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/08; G05D1/0808; G05D1/0866

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 166 words
In a device for the stabilization of a captive rotorcraft with a drive unit, with output regulating means, for lifting rotor blade means having cyclic and collective control of said rotor blade means, and wherein a mooring line engages below the rotorcraft center of gravity. the improvement comprising position regulating means and translation damping means for the purpose of maintaining predetermined reference values relating to all rotorcraft axes and to translation, and adapted to influence the cyclic control of said rotor blade means, cable line traction regulating means adapted to influence said output regulating means and said collective control of said rotor blade means, said cable line traction regulating means being adapted to operate in dependence upon cable line traction in immediate proximity to the rotorcraft and in dependence upon rpm of said rotor blade means, and angular velocity regulating means for influencing a yaw tail assembly control nozzle means for adjusting the position of the rotorcraft about its vertical axis by generating a control thrust.
Claim 2
Dependent Claim 166 words
In a device for the stabilization of a captive rotorcraft with a drive unit, with output regulating means, for lifting rotor blade means having cyclic and collective control of said rotor blade means, and wherein a mooring line engages below the rotorcraft center of gravity. the improvement comprising position regulating means and translation damping means for the purpose of maintaining predetermined reference values relating to all rotorcraft axes and to translation, and adapted to influence the cyclic control of said rotor blade means, cable line traction regulating means adapted to influence said output regulating means and said collective control of said rotor blade means, said cable line traction regulating means being adapted to operate in dependence upon cable line traction in immediate proximity to the rotorcraft and in dependence upon rpm of said rotor blade means, and angular velocity regulating means for influencing a yaw tail assembly control nozzle means for adjusting the position of the rotorcraft about its vertical axis by generating a control thrust.
Claim 3
Dependent Claim 210 words
In a device for the stabilization of a captive rotorcraft with a drive unit, with output regulating means, for lifting rotor blade means adjustable with respect to the magnitude and direction of lift, and wherein a mooring line engages below the rotorcraft center of gravity, the improvement comprising position regulating means and translation damping means for the purpose of maintaining predetermined reference values relating to all rotorcraft axes and to translation, and adapted to influence said lifting rotor blade means, cable line traction regulating means adapted to influence said output regulating means and said lifting rotor blade means, said cable line traction regulating means being adapted to operate in dependence upon cable line traction in immediately proximity to the rotorcraft and in dependence upon rpm of said rotor blade means, angular velocity regulating means for influencing yaw control, ground station means adapted to intervene in the stabilization by means of a predetermined electrical signal of a nominal position value for the purpose of above-ground control, said position regulating means and translation damping means being coupled together, and signals corresponding to deviations from roll and pitch axes of the rotorcraft, together with a corresponding deviation in translation, combining in one output signal to control cyclic adjustment of said rotor blade means.
Claim 4
Dependent Claim 210 words
In a device for the stabilization of a captive rotorcraft with a drive unit, with output regulating means, for lifting rotor blade means adjustable with respect to the magnitude and direction of lift, and wherein a mooring line engages below the rotorcraft center of gravity, the improvement comprising position regulating means and translation damping means for the purpose of maintaining predetermined reference values relating to all rotorcraft axes and to translation, and adapted to influence said lifting rotor blade means, cable line traction regulating means adapted to influence said output regulating means and said lifting rotor blade means, said cable line traction regulating means being adapted to operate in dependence upon cable line traction in immediately proximity to the rotorcraft and in dependence upon rpm of said rotor blade means, angular velocity regulating means for influencing yaw control, ground station means adapted to intervene in the stabilization by means of a predetermined electrical signal of a nominal position value for the purpose of above-ground control, said position regulating means and translation damping means being coupled together, and signals corresponding to deviations from roll and pitch axes of the rotorcraft, together with a corresponding deviation in translation, combining in one output signal to control cyclic adjustment of said rotor blade means.
Claim 5
Dependent Claim 176 words
In a device for the stabilization of a captive rotorcraft with a drive unit, with output regulating means, for lifting rotor blade means adjustable with respect to the magnitude and direction of lift, and wherein a mooring line engages below the rotorcraft center of gravity, the improvement comprising position regulating means and translation damping means for the purpose of maintaining predetermined reference values relating to all rotorcraft axes and to translation, and adapted to influence said lifting rotor blade means, a single integrator means inserted in the position regulating means and the translation damping means for integrating the deviation of an actual position value from a desired position value and an acceleration signal compensated by earth accelerations, cable line traction regulating means adapted to influence said output regulating means and said lifting rotor blade means, said cable line traction regulating means being adapted to operate in dependence upon cable line traction in immediate proximity to the rotorcraft and in dependence upon rpm of said rotor blade means, and angular velocity regulating means for influencing yaw control.
Claim 6
Dependent Claim 176 words
In a device for the stabilization of a captive rotorcraft with a drive unit, with output regulating means, for lifting rotor blade means adjustable with respect to the magnitude and direction of lift, and wherein a mooring line engages below the rotorcraft center of gravity, the improvement comprising position regulating means and translation damping means for the purpose of maintaining predetermined reference values relating to all rotorcraft axes and to translation, and adapted to influence said lifting rotor blade means, a single integrator means inserted in the position regulating means and the translation damping means for integrating the deviation of an actual position value from a desired position value and an acceleration signal compensated by earth accelerations, cable line traction regulating means adapted to influence said output regulating means and said lifting rotor blade means, said cable line traction regulating means being adapted to operate in dependence upon cable line traction in immediate proximity to the rotorcraft and in dependence upon rpm of said rotor blade means, and angular velocity regulating means for influencing yaw control.

References Cited (Backward Citations)

US2453857A Cited
US3176288A Cited
US2995740A Cited
US2998210A Cited
US3117749A Cited
US3223358A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1981-06-19 1981-12-19 1982-06-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-06-19 1985-12-19 1986-06-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-06-19 1989-12-19 1990-06-20 $7700.00 Window Closed / Lapsed

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