Automated Procedure for Evaluating Sites for Suitability as Helicopter Landing Zones. Volume 1. Descriptions and Instructions for Use of Computer Programs

reportActive / Technical Report | Accession Number: ADA030173 | Open PDF

Abstract:

This report contains instructions for operating a model that is an automated procedure for evaluating designated sites as helicopter landing zones. The model is comprised of three independent computer programs run sequentially. Program 1 FTHEL evaluates the site in terms of generalized conditions of slope, microrelief, and soil strength as related to the requirements set by certain characteristics of the helicopter that is to land. The program determines whether the site can provide a full-touch zone, a skid-touch zone, a nontouch zone, or no landing zone at all, and computes the minimum departure angle for the specified helicopter if a landing zone is possible. Program 2 FTJPRH is an automated mathematical procedure for predicting the size and shape of a clearing in a forested area by considering blast forces from a bomb explosion, tree stem strength, stem diameter, and distance from ground zero GZ , the center of the explosion. The clearing is described by a vegetation profile of tree remnant height versus the distance from GZ. Program 3 FTJPHL of the model is an automated procedure for evaluating a clearing by estimating how many trees must be removed from a clearing produced by a high-yield, air-dropped munition in order to use the clearing as a full-touch helicopter landing zone. The output is the number of tree remnants that must be removed to satisfy the landing requirements of a specified helicopter.

Author(s):
Parks, Judith A.
Author Organization(s):
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS
Descriptive Note:
Final rept. Jan 1973-Jun 1975
Supplementary Note:
See also Volume 2, ADB013638. DOI: 10.21236/ADA030173
Pagination:
0282

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
WES-INSTRUCTION-M-76-1
Task Number(s):
4A162121AT3102, 1T162112A52802
Project Number(s):
DA-4-A-162121-AT-31, DA-1-T-162112-A-528
Monitor Series:
OCE
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.3_Planning; JCA_3_Force Application; JCA_3.1.1_Maneuver to Engage; JCA_3.1_Maneuver; JCA_5.3.4_Develop Courses of Action; JCA_5.3.5_Analyze Courses of Action; JCA_2_Battlespace Awareness; JCA_2.1_Planning and Direction; JCA_2.1.4_Evaluation; JCA_3.2_Engagement; JCA_3.2.1_Kinetic Means; JCA_5.3.1_Analyze Problem; JCA_4.7.2_Installation Services; JCA_4.7_Base and Installations Support; JCA_7.2.1_Mitigate Lethal Effects; JCA_7.2_Mitigate; JCA_7_Protection; JCA_1_Force Support; JCA_5.2.2_Develop Knowledge and Situational Awareness; JCA_5.2_Understand
Modernization Areas:
Directed Energy
Communities of Interest:
Weapons Technologies
Descriptor(s):
*COMPUTER PROGRAMS, *HELIPADS, *LANDING FIELDS, *SITE SELECTION, AUTOMATION, CLEARANCES, COMPUTER AIDED DESIGN, CONSTRUCTION, HELICOPTERS, MATHEMATICAL MODELS, TERRAIN
Field(s)/Group(s):
Terminal Flight Facilities, Computer Programming and Software, Civil Engineering
Keyword(s):
*HELICOPTER LANDING ZONES
Report Date:
1976 Jun 01