Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Airworthiness And Flight Characteristics Test Of The Uh 60a Black Hawk Helicopter Equipped With The Xm 139 Multiple Mine Dispensing System Volcano PDF full book. Access full book title Airworthiness And Flight Characteristics Test Of The Uh 60a Black Hawk Helicopter Equipped With The Xm 139 Multiple Mine Dispensing System Volcano.
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| Total Pages | : 0 |
| Release | : 1988 |
| Genre | : Helicopters |
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| Total Pages | : 980 |
| Release | : 1990 |
| Genre | : Aeronautics |
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| Total Pages | : 119 |
| Release | : 1987 |
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Preliminary airworthiness flight tests were conducted at West Palm Beach, FL, (elevation 28 feet). Tests totaling 22.4 hours of productive flight time were conducted to determine handling qualities and performance of the UH- 60A in the VOLCANO system configuration at an average mission gross weight of 20,500 pounds and a longitudinal center of gravity at fuselage station 351.0 The handling qualities of the UH-60A with the VOLCANO system, installed were similar to the normal utility UH-60A. Three shortcomings were noted in this configuration: 1) the increased frequency and magnitude of 'tail shake' with the VOLCANO installed; 2) the position error for the ship's airspeed system was increased by approximately 8 knots at higher speeds (120 KCAS) due to the installation of the VOLCANO mine dispensing system; and 3) Stability Augmentation System (SAS) OFF dynamic response, not attributed to the VOLCANO installation, was aperiodic and divergent. The UH-60A helicopter with VOLCANO failed to meet two requirements of the Prime Item Development Specification; however, these noncompliances were not significant. Recommendations were made to incorporate data into the applicable portion of the VOLCANO operator's manual and to conduct additional testing. Keywords: Flight testing; Aerial mine dispensers; Helicopters.
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| Total Pages | : 1672 |
| Release | : 1989 |
| Genre | : Government reports announcements & index |
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| Author | : Randall W. Cason |
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| Total Pages | : 127 |
| Release | : 1987 |
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An Airworthiness and Flight Characteristics test of the UH-60A helicopter (S/N 84-23953) configured with a ski assembly was conducted by the U.S. Army Aviation Engineering Flight Activity. The test was conducted at the Sikorsky Flight Test Facility at West Palm Beach, Florida (elevation 28 feet). A total of 25.5 productive flight hours were flown during the period 6 to 30 April 1987. Tests were conducted to determine the handling qualities and performance decrement of the ski assembly on the UH-60A helicopter at average mission gross weights of approximately 16,000 and 22,000 pounds. The handling qualities of the UH-60A with the ski assembly installed were essentially unchanged from those previously reported for the normal utility UH-60A. Two previously reported shortcomings are still evident: neutral static longitudinal stability during intermediate rated power climbs, and self-excited aircraft pitch oscillation with the collective control raised sufficiently for the aircraft to be 'light' on its wheels. The equivalent flat plate area of the ski assembly was determined to be 3 square feet. Several miscellaneous observations were made regarding the effects of the ski installation.
| Author | : John I. Nagata |
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| Total Pages | : 267 |
| Release | : 1981 |
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The United States Army Aviation Engineering Flight Activity conducted an Airworthiness and Flight Characteristics Evaluation of the third and fourth production UH-60A (Black Hawk) helicopters from 27 October 1979 through 9 October 1980. Performance, handling qualities, and vibration characteristics were evaluated to provide data for the operator's manual and to determine compliance with the applicable paragraphs of the Prime Item Development Specification. The UH-60A met 5 of the 7 performance comments evaluated with reference to the Prime Item Development Specification. The performance of the UH-60A was better than the YUH-60A because of the lower primary mission gross weight of the aircraft, the reduced power required, and the increased power available. Due to the priorities set by United States Army Aviation Research and Development Command the handling qualities portion of the Airworthiness and Flight Characteristics Evaluation was extremely limited. The excellent engine torque matching greatly reduced pilot work load in the area of power management. When maneuvering, the limited load factor envelope at heavy gross weight was easily exceeded. The vibrations were found to be quite high in several areas and were considered to be excessive for a new generation helicopter.
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| Total Pages | : 502 |
| Release | : 1989 |
| Genre | : Science |
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| Total Pages | : 55 |
| Release | : 1988 |
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A limited evaluation of the UH-60A helicopter with XM-139 Multiple Delivery Mine Dispensing System (VOLCANO) was conducted to determine the capability to operate safely in a moderate environment. Artificial and natural icing tests were conducted at Duluth, Minnesota from 10 January through 22 February 1988. Testing was conducted by the U.S. Army Aviation Engineering Flight Activity and consisted of 16.4 productive flight hours. One deficiency related to inadequate procedures in the operator's and crewmember's checklist was identified. The checklist does not contain procedures to activate anti-icing systems. Two shortcomings were identified that involved the ice accretion characteristics of the VOLCANO. Ice accretion on the mounting hardware kit interferes with reinstalling the launcher rack jettison safety pins due to ice covering the safety pin holes. Ice accretion on the forward end of the launcher racks interferes with movement of the arming levers and locking levers to the safe and unlocked positions, respectively. The probability of damage to rotating components, due to impact with shed ice particles in descents is increased with the installation of the VOLCANO. The UH-60A helicopter with the VOLCANO system installed can safely operate in moderate icing conditions.
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| Total Pages | : 568 |
| Release | : 1991 |
| Genre | : Aeronautics |
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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).
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| Total Pages | : 532 |
| Release | : 1990 |
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