Design and Analysis of CH-47 External Cargo Handling System (Snubbed Load).

reportActive / Technical Report | Accession Number: ADA088057 | Open PDF

Abstract:

Development of a preliminary design concept to snub containerized external cargo loads to the CH-47 aircraft, for improved terrain and NightIMC 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(s):
Garnett, Theodore S., Jr. ; Campbell, Richard F. ; Hodder, David J.
Author Organization(s):
BOEING VERTOL CO PHILADELPHIA PA
Descriptive Note:
Final rept. Sep 77-Oct 79,
Pagination:
0458

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release, Document Partially Illegible
Distribution Statement:
Availability: Document Partially Illegible.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
D210-11555-1
Contract/Grant Number(s):
DAAJ02-77-C-0069
 Subject Terms
Joint Capability Areas:
JCA_3_Force Application; JCA_3.1.1_Maneuver to Engage; JCA_3.1_Maneuver; JCA_6.1.1_Wired Transmission; JCA_5_Command and Control; JCA_5.3_Planning; JCA_6.1.3_Switching and Routing; JCA_6_Net Centric; JCA_6.1_Information Transport; JCA_7_Protection; JCA_7.2.1_Mitigate Lethal Effects; JCA_7.2_Mitigate; JCA_4.1_Deployment and Distribution; JCA_4.7.2_Installation Services; JCA_4.7_Base and Installations Support; JCA_4_Logistics; JCA_1_Force Support; JCA_5.3.4_Develop Courses of Action; JCA_5.3.5_Analyze Courses of Action; JCA_5.3.3_Develop Strategy; JCA_1.2_Force Preparation
Communities of Interest:
Air Platforms
Descriptor(s):
*EXPERIMENTAL DESIGN, *HELICOPTERS, *SYSTEMS ANALYSIS, *CARGO HANDLING, FLIGHT TESTING, VIBRATION, MANEUVERABILITY, DEMONSTRATIONS, PERFORMANCE(ENGINEERING), MODIFICATION, LOADS(FORCES), PROTOTYPES, TERRAIN, EXTERNAL, LIFT, BENEFITS, LANDING GEAR, HOISTS
Field(s)/Group(s):
Helicopters
Keyword(s):
ECHS(External Cargo Handling System), Snubbed loads, CLAH(Cargo Life Adapter Helicopter), CH 47 aircraft, Containerized cargo loads, Cargo lift adapters
Report Date:
1979 Oct 01