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Author : Leslie J. Hepler
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (173 download)
Download or read book Airworthiness and Flight Characteristics Evaluation AH-1Q Helicopter written by Leslie J. Hepler and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gary L. Skinner
Publisher :
ISBN 13 :
Total Pages : 102 pages
Book Rating : 4.:/5 (172 download)
Download or read book Airworthiness and Flight Characteristics Evaluation: YAH-1S Improved Cobra Agility and Maneuverability Helicopter written by Gary L. Skinner and published by . This book was released on 1975 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: Limited flight tests of a prototype aircraft were conducted at 3 test facilities at various altitudes. Testing concentrated on hover and level flight performance, controllability, and low-speed flight characteristics at heavy gross weight, high density altitude test conditions. The YAH-1S represents a significant improvement over the AH-1G/Q helicopter by virtue of its increased useful load-carrying capability, directional controllability and control margin, and hover performance capability. The control system characteristics of the YAH-1S failed to meet several requirements of applicable paragraphs of military specification MIL-H-8501A and the approved BHC deviations to MIL-H-8501A against which they were tested, but were still considered satisfactory. One shortcoming was noted.
Author : John I. Nagata
Publisher :
ISBN 13 :
Total Pages : 267 pages
Book Rating : 4.:/5 (227 download)
Download or read book Airworthiness and Flight Characteristics Evaluation, UH-60A (Black Hawk) Helicopter written by John I. Nagata and published by . This book was released on 1981 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : Gary L. Bender
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.:/5 (227 download)
Download or read book Preliminary Airworthiness Evaluation AH-1S Helicopter with OGEE Tip Shape Rotor Blades written by Gary L. Bender and published by . This book was released on 1980 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: The United States Army Aviation Engineering Flight Activity conducted a Preliminary Airworthiness Evaluation of the AH-1S helicopter with OGEE tip-shape main rotor blades to determine if any improvement in performance or handling qualities resulted from replacing the K747 blades. Additionally, the acoustics signature of the OGEE blades were measured by the US Army Research and Technology Laboratories (Aeromechanics Lab). Tests were conducted at Edwards Air Force Base (elevation 2302 feet) and Coyote Flats (elevation 9980 feet), California from 1 November 1979 through 8 April 1980. Forty-five test flights were flown for a total of 36.6 productive hours (63.2 total hours). Both hover and level flight performance were degraded by installation of OGEE tip-shape main rotor blades. Low-speed handling qualities were unaffected by the OGEE blades. Other handling qualities tests were not accomplished. Results of acoustics tests will be reported by the laboratories under a separate cover. (Author).
Author : James D. Brown
Publisher :
ISBN 13 :
Total Pages : 160 pages
Book Rating : 4.:/5 (227 download)
Download or read book Airworthiness and Flight Characteristics Evaluation of an Improved Engine Air Filtration System on the UH-1H Helicopter written by James D. Brown and published by . This book was released on 1988 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. Army Aviation Engineering Flight Activity conducted an Airworthiness and Flight Characteristics evaluation of the UH-1H aircraft with an Improved Engine Air Filtration System (IEAFS) installed and with the standard filter installed between 16 September 1987 and 29 February 1988. Aircraft performance and handling qualities, engine-air induction system compatibility, and engine performance with the IEAFS installed were evaluated. This evaluation was conducted at Edwards AFB, California. Twenty-five flights were conducted for a total of 20.1 productive flight hours. The aircraft performance and handling qualities, engine vibrations, and inlet temperature characteristics with the IEAFS installed are not significantly different from those of the standard UH-1H. The inlet pressure distortion and engine installation losses with the IEAFS installed are less than those of the standard UH-1H. One deficiency, the poor reliability of the IEAFS latch rivets, was identified. One shortcoming, the poor reliability of the latch lever locking device, was identified. Both the deficiency and the shortcoming should be corrected before production. Engine installation losses, Engine vibrations, Engine air filtration system, Inlet pressure distortion, Inlet temperature characteristics, Performance, Handling qualities, Standard filter. (mjm).
Author : Gary L. Bender
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.:/5 (179 download)
Download or read book Preliminary Airworthiness Evaluation AH-1S Helicopter with Ogee Tip Shape Motor Blades written by Gary L. Bender and published by . This book was released on 1980 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Patrick J. Moe
Publisher :
ISBN 13 :
Total Pages : 129 pages
Book Rating : 4.:/5 (641 download)
Download or read book Preliminary Airworthiness Evaluation: AH-1S Helicopter Installed with Enhanced Cobra Armament System (AH-1S/ECAS) written by Patrick J. Moe and published by . This book was released on 1979 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Patrick J. Moe
Publisher :
ISBN 13 :
Total Pages : 138 pages
Book Rating : 4.:/5 (227 download)
Download or read book Preliminary Airworthiness Evaluation Ah-1S Helicopter Installed with Enhanced Cobra Armanent System (ah-1S/ECAS). written by Patrick J. Moe and published by . This book was released on 1979 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: The United States Army Aviation Engineering Flight Activity conducted a preliminary airworthiness evaluation of the Enhanced Cobra Armament System (ECAS) with the universal turret subsystem and M-197 20mm gun installed. The purpose of the test was to evaluate the effects of turret installation and weapons firing on the helicopter. Additionally, a limited stability and control evaluation of the helicopter (gun stowed) was conducted. Flight testing was performed at Yuma Proving Grounds, Arizona, and consisted of 27 flight test hours (15 productive).
Author : John I. Nagata
Publisher :
ISBN 13 :
Total Pages : 83 pages
Book Rating : 4.:/5 (124 download)
Download or read book Preliminary Airworthiness Evaluation AH - 1S (MC (Modernized Cobra)) Helicopter with External Fuel Tanks Installed written by John I. Nagata and published by . This book was released on 1984 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Preliminary Airworthiness Evaluation of the AH-1S Modernized Cobra, (S/N 69-16423) with the Kellett ferry tanks installed was conducted at Edwards Air Force Base, California (2302 feet) and Bakersfield, California (488 feet). Approximately 19 productive hours were flown during 24 flights between 17 March and 27 April 1984. The Kellett ferry tanks increased the equivalent flat plate area by 2.0 sq ft. One deficiency noted during the evaluation was the lack of crashworthiness of the external fuel tanks. Four shortcomings associated with the installation of the external fuel tanks were found.
Author : James L. Webre
Publisher :
ISBN 13 :
Total Pages : 299 pages
Book Rating : 4.:/5 (227 download)
Download or read book Airworthiness and Flight Characteristics Evaluation of the McDonnell Douglas Helicopter Corporation (MDHC) 530FF Helicopter written by James L. Webre and published by . This book was released on 1989 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: An Airworthiness and Flight Characteristics Evaluation of the McDonnell Douglas 530FF helicopter (also known as the AH-6G or MH-6H) was performed by the U.S. Army Aviation Engineering Flight Activity between August 1987 and September 1988. The test consumed 94 productive flight test hours in 152 total hours. Many configurations were flown at gross weights up to 3950 pounds. Three deficiencies related to the handling qualities, and one related to the inability to observe a sideslip/tail rotor flapping limit were identified. Twelve shortcomings were also identified. AH-6G, MH-6H, Handling qualities, Inability, Performance, Test and evaluation. (eg).
Author : Patrick J. Moe
Publisher :
ISBN 13 :
Total Pages : 43 pages
Book Rating : 4.:/5 (227 download)
Download or read book Preliminary Airworthiness Evaluation, AH-1G with the Airborne Target Acquisition Fire Control System and the HELLFIRE Modular Missile System Installed written by Patrick J. Moe and published by . This book was released on 1979 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: The AH-1G helicopter with the HELLFIRE modular Missile System (HMMS) and the Airborne Target Acquisition Fire Control System (ATAFCS) is being used as a surrogate trainer for the YAH-64 helicopter. The United States Army Aviation Engineering Flight Activity was tasked to provide quantitative and qualitative data on the handling qualities of the helicopter, obtain limited level flight performance data, and obtain limited handling qualities of the helicopter with only the ATAFCS installed. The test helicopter was a production AH-1G helicopter (212 tail rotor) modified with an ATAFCS mockup and carrying eight HELLFIRE missiles. Six productive flight test hours were flown in six flights. No shortcomings or deficiencies attributable to HMMS and ATAFCS installation were found. The AH-1G helicopter, with HMMS and ATAFCS installed, exhibits an additional equivalent flat plate area of 4.0 ft2 compared to the standard AH-1Q helicopter. The handling qualities of the helicopter with only the ATAFCS installed are essentially the same as the production AH-1G helicopter. (Author).
Author : Randall W. Cason
Publisher :
ISBN 13 :
Total Pages : 178 pages
Book Rating : 4.:/5 (235 download)
Download or read book Airworthiness and Flight Characteristics Test of the UH-60A Black Hawk Helicopter Equipped with the XM-139 Multiple Mine Dispensing System (VOLCANO) written by Randall W. Cason and published by . This book was released on 1988 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gary L. Bender
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (173 download)
Download or read book Airworthiness and Flight Characteristics: AH-1G Helicopter with Stabilized Night Sight (SNS) written by Gary L. Bender and published by . This book was released on 1969 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert M. Buckanin
Publisher :
ISBN 13 :
Total Pages : 42 pages
Book Rating : 4.:/5 (227 download)
Download or read book Preliminary Airworthiness Evaluation: EH-1H Helicopter Quick Fix Phase 1A. written by Robert M. Buckanin and published by . This book was released on 1977 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: The United States Army Aviation Engineering Flight Activity conducted a Preliminary Airworthiness Evaluation of the EH-1H Helicopter Quick Fix Phase 1A to determine the effects of the installation of the AN/ARQ-33 radio countermeasures system and its associated equipment on aircraft handling qualities. The helicopter was tested from 18 through 23 August 1977 at Naval Air Station, Pensacola, Florida. During the tests, nine flights totaling 8.5 productive flight hours were flown. The handling qualities of the EH-1H helicopter were determined to be satisfactory with the exception of inadequate directional control in right sideward flight. An enhancing characteristic noted was the simultaneous antenna retraction systems. Inadequate directional control at right sideward velocities between 5 and 15 knots true airspeed was a deficiency. Two shortcomings were noted: the susceptibility to damage of the right FM 10-120 homing antenna during preflight/maintenance operations and the susceptibility to damage of the FM 10-242 communications antenna during running takeoff/landing maneuvers. (Author).
Author : Rodger L. Finnestead
Publisher :
ISBN 13 :
Total Pages : 99 pages
Book Rating : 4.:/5 (227 download)
Download or read book Engineering Flight Test AH-1G Helicopter (Hueycobra). Phase D. Airworthiness and Flight Characteristics. Part 2. Performance, Addendum written by Rodger L. Finnestead and published by . This book was released on 1971 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: This addendum to the performance report presents the results of turning performance, in-ground-effect (IGE) level acceleration and deceleration performance and dive recovery tests. These three tests were conducted to validate portions of the AH-1G operator's manual (TM 55-1520-221-10) and enhance the knowledte of interested government agencies as to the limitations and capabilities of the AH-1G helicopter. Three major limitations were encountered during testing that restricted the pilot from achieving maximum performance: level acceleration and deceleration performance IGE is limited by extreme pitch attitudes; level deceleration performance is limited by the pilot's ability to maintain rotor speed below the maximum limit (339 rpm); the cyclic control feedback limits aircraft turning and dive recovery performance at heavy gross weight and/or when high load factors are encountered. (Author).
Author : Robert A. Williams
Publisher :
ISBN 13 :
Total Pages : 180 pages
Book Rating : 4.:/5 (614 download)
Download or read book Airworthiness and Flight Characteristics Test (A & FC) of the BHTI 214ST Helicopter written by Robert A. Williams and published by . This book was released on 1985 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Airworthiness and Flight Characteristics Test of the Bell 214ST helicopter (S/N N3186W) was conducted by the US Army Aviation Engineering Flight Activity (USAAEFA). The test was conducted at Edwards Air Force Base (elevation 2302 feet), Bakersfield (elevation 488 feet), Bishop (elevation 4120 feet) and Coyote Flats (elevation 9980 feet), California. A total of 62.6 hours (27.5 productive hours) were flown between 1 July and 27 August 1985. Hover, level flight and autorotational descent performance tests were conducted. Handling qualities tests included static and dynamic stability, maneuvering stability, power management, systems failures, mission maneuvers and flight in simulated Instrument Meteorological Conditions (IMC). The airspeed for best glide distance determined from the autorotational descent performance test results of this evaluation was significantly less than the best glide distance airspeed presented in the flight manual. The out-of-ground effect hover test results when compared to the flight manual indicated less hover capability at standard day conditions and altitude below 8060 feet but better hover capability at higher altitudes. The maximum difference between the flight manual and the test results of this evaluation was 250 pounds, below 8060 feet. Two major conclusions reached were: the 214ST is an excellent IMC aircraft with its IMC capabilities exceeding those of any US Army helicopters and its cockpit design significantly reduces pilot workload in most modes of flight.
Author : Patrick M. Morris
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (227 download)
Download or read book Preliminary Airworthiness Evaluation AH-1S(Prod) Helicopter Equipped with a Substitute Straight Exhaust Pipe written by Patrick M. Morris and published by . This book was released on 1980 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: A limited performance and handling qualities evaluation and an engine and transmission cooling survey of an AH-1S (PROD) Helicopter equipped with a substitute straight exhaust pipe was performed at Edwards Air Force Base between 20 and 23 August 1979. A total of 8 hours, 6.3 of which were productive, was required. No significant changes in performance or handling qualities were found as a result of the substitute straight exhaust pipe installation. The engine and transmission cooling characteristics were similar to those of a production AH-1S and were satisfactory. No previously unreported shortcomings or deficiencies were identified. (Author).
