Design and Analysis of CH-47 External Cargo Handling System (Snubbed Load). PDF Download
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Author: Theodore S Garnett (Jr)
Publisher:
ISBN:
Category :
Languages : en
Pages : 458
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Book Description
Development of a preliminary design concept to snub containerized external cargo loads to the CH-47 aircraft, for improved terrain and Night/IMC flight capability, has been completed. Results are suitable for detail design implementations leading to prototype demonstration of the system in the future. The External Cargo Handling System (ECHS) snubs loads (of up to 25,000 lbs. weight) against the helicopter landing gear, using a self hoisting adapter framework powered by 6 horsepower tandem electric hoists installed of non-linear vibration isolation mounts to interface the load with the aircraft. The ECHS snubbing adapter uses guide arms for load acquisition assistance, and twistlocks to lock the load to the adapter. No structural modification to the CH-47 is required. Compared to carrying cargo on conventional external sling suspension with a CLAH adapter, load snubbing provides a substantial performance benefit for terrain flight missions; and at the same time improves both masking and maneuverability along with capability for flight at night, or in IMC condition. (Author).
Author: Theodore S Garnett (Jr)
Publisher:
ISBN:
Category :
Languages : en
Pages : 458
Get Book Here
Book Description
Development of a preliminary design concept to snub containerized external cargo loads to the CH-47 aircraft, for improved terrain and Night/IMC flight capability, has been completed. Results are suitable for detail design implementations leading to prototype demonstration of the system in the future. The External Cargo Handling System (ECHS) snubs loads (of up to 25,000 lbs. weight) against the helicopter landing gear, using a self hoisting adapter framework powered by 6 horsepower tandem electric hoists installed of non-linear vibration isolation mounts to interface the load with the aircraft. The ECHS snubbing adapter uses guide arms for load acquisition assistance, and twistlocks to lock the load to the adapter. No structural modification to the CH-47 is required. Compared to carrying cargo on conventional external sling suspension with a CLAH adapter, load snubbing provides a substantial performance benefit for terrain flight missions; and at the same time improves both masking and maneuverability along with capability for flight at night, or in IMC condition. (Author).
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 248
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 748
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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 65
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Book Description
This report describes the design and development activity resulting in an 'add-on' cargo handling system for the CH-47 helicopter. Design activity was initiated as a result of cargo handling problems encountered in the European Theater. The Applied Technology Laboratory at Fort Eustis, Virginia, designed and fabricated a mock-up of an internal cargo handling system that demonstrated a practical approach for an add-on system for the CH-47. An evaluation of this mockup, together with the results of an investigative field trip to the European Theater, led to the requirements definition for the cargo handling system. The cargo handling system can be installed in a CH-47 helicopter with no modifications to the primary structure. The system can handle 463L pallets, warehouse pallets and special munitions. The system includes forward and aft barriers to minimize tiedown requirements, ramp extensions to allow easy fork-lift loading and a fuselage levelling system. Functional tests of the system resulted in minor modifications to the original hardware. The modified hardware has been successfully installed and demonstrated in a CH-47C and a CH-47D model helicopter. (Author).
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 750
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 104
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Book Description
A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA)
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 896
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Book Description
Author: United States. Defense Logistics Studies Information Exchange
Publisher:
ISBN:
Category : Military research
Languages : en
Pages : 1070
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Book Description
Author:
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 1428
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Book Description
Author: Thomas Lancashire
Publisher:
ISBN:
Category :
Languages : en
Pages : 199
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Book Description
The report covers an investigation into the mechanics of handling external cargo by helicopters. It comprises an analytical study of airborne hoist systems and comparisons of load acquisition techniques, crane-type long landing gears, and single- and multi-point suspension systems. The vertical bounce phenomenon is analyzed in detail and found to be dependent on inputs to the thrust control system provided by the pilot. The stability of the helicopter in forward flight is analyzed for neutrally stable slung loads. Forward-speed stability and control limits are usually the result of the effects of load aerodynamic instability on the handling qualities of the helicopter. For aerodynamically unstable loads, multi-point suspension allows a significant increase in forward speed over single-point suspension. A test plan describing equipment and associated items required to quantify and qualify the defined design parameters is included. (Author).
