Download or read book Engineering Flight Test AH 1G Helicopter Heavyweight Autorotational Evaluation written by Joseph C. Watts and published by . This book was released on 1974 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Engineering flight tests were conducted by the United States Army Aviation Systems Test Activity to determine if any adverse autorotational entry or landing characteristics would preclude increasing the maximum operational gross weight of the AH-1G helicopter above the current 9500 pounds. A production AH-1G helicopter with tractor tail rotor was flown 14.4 hours at Edwards Air Force Base, California between 26 September and 12 October 1973 in the Hog configuration. Autorotational entries were performed successfully at gross weights from 9000 to 10,000 pounds from climbs, level flight, and dives. (Modified author abstract).

Download or read book Engineering Flight Test AH 1G HueyCobra Helicopter Autorotational Entry Characteristics written by Brock M. Nicholson and published by . This book was released on 1971 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Engineering Flight Test AH 1G Helicopter with Model 212 Tail Rotor Part II Performance and Handling Qualities written by John I. Nagata and published by . This book was released on 1973 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: The United States Army Aviation Systems Test Activity conducted a limited performance and handling qualities evaluation of the AH-1G helicopter with a Bell Helicopter Company commercial Model 212 tail rotor installed. This installation included changes to the pitch links and pitch control tube to accommodate the Model 212 tail rotor; however, the remaining components of the tail rotor drive system were standard AH-1G items. The evaluation was performed during the period 29 May to 7 August 1973 at Edwards Air Force Base, Bakersfield, and Bishop, California. (Modified author abstract).

Download or read book Engineering Flight Test AH 1G HueyCobra Helicopter Autorotational Entry Characteristics written by Brock M. Nicholson and published by . This book was released on 1971 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Engineering Flight Test AH 1G Helicopter Hueycobra Phase B written by Rodger L. Finnestead and published by . This book was released on 1969 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: The AH-1G helicopter Phase B, Part 6 test program was conducted at Shafter, California, and Edwards Air Force Base, California. The program was conducted to determine level flight performance, autorotational performance, engine characteristics, armed helicopter mission capability and to evaluate the in-ground-effect (IGE) handling qualities with the canopy doors removed.

Download or read book Performance and Handling Qualities Evaluation AH 1G Helicopter with Low Reflective Infrared optical Paint written by Albert L. Winn and published by . This book was released on 1975 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: The performance and handling qualities of an AH-1G helicopter were evaluated in the basic paint configuration, with the fuselage and main and tail rotors painted with a low reflective infrared (IR)/optical paint (FSN 8010-083-6588), and in a modified IR/optical paint configuration in which the tail rotor blades and the main rotor leading edge were stripped of the IR/optical paint. Flight tests were conducted by the United States Army Aviation Engineering Flight Activity at Edwards Air Force Base, California, between 27 November 1974 and 10 April 1975. Twenty-five flights were flown for a total of 24.7 productive flight hours. Performance testing was limited to hover, level flight, and autorotational descent. Handling qualities were qualitatively evaluated throughout the conduct of the test program. Additionally, maneuvering stability was quantitatively evaluated in the IR/optical paint configuration and compared with results from previous reports.

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).

Download or read book Engineering Flight Test AH 1G Helicopter Hueycobra written by Rodger L. Finnestead and published by . This book was released on 1969 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Engineering Flight Test of the Ah 1g Helicopter hueycobra Phase B written by John R. Melton and published by . This book was released on 1968 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part 1 of the AH-1G helicopter Phase B test was conducted at Ft Hood, Texas by the US Army Aviation Test Activity, Edwards AFB, California. The helicopter flying qualities were evaluated throughout the aircraft speed range for the Scout and Hog configurations at a mid-center-of-gravity location. Flying qualities were also evaluated during weapons firing and external stores jettison. The primary deficiencies detected during this test were stability and Control augmentation system (SCAS)-pylon coupling, inadequate in-ground-effect (IGE) directional control power, undue pilot attention required to avoid exceeding the torque limits of the helicopter transmission in dives and left rolls with fixed collective, and an inadequate, illogical fire control system. Other shortcomings were detected, such as airspeed system errors, degradation of flying qualities with SCAS off, static lateral cyclic control force imbalance, and marginal cockpit ventilation. Helicopter reactions to weapons firing and external stores jettison were satisfactory, and the contractor approved flight envelope for firing and jettison was acceptable.

Download or read book Engineering Flight Test AH 1G Helicopter Hueycobra written by Richard B. Lewis and published by . This book was released on 1971 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Height Velocity Test AH 1G Helicopter at Heavy Gross Weight Part 1 Low Elevation written by and published by . This book was released on 1974 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: The United States Army Aviation Systems Test Activity conducted engineering flight tests to determine the operational height-velocity envelopes of the AH-1G helicopter at 9000 and 9500 pounds gross weight. This report constitutes the low elevation part of the evaluation conducted at Edwards Air Force Base, California, from 14 November 1973 through 5 February 1974. Operational height-velocity envelopes were defined from test data, are valid for 9000 and 9500 pounds at density altitudes up to 1000 feet, and represent combinations of airspeed and height above ground level where a straight-ahead landing may be accomplished following an engine failure. Autorotational landings at gross weights over 9250 pounds will probably result in rotor overspeed and the height above ground level at which the flare is executed becomes more critical as gross weight is increased to 9500 pounds. The operator's manual lacks clarity in describing pilot techniques to be used during the height-velocity maneuver and needs improvement in other areas. The height-velocity diagram developed during this evaluation, a discussion of the height-velocity diagram, a more thorough discussion of pilot techniques, the correct airspeed calibration chart, and the hog configuration descent performance chart should be incorporated in the operator's manual. A radio altimeter should be installed as standard equipment on the AH-1G helicopter.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1975 with total page 1036 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Engineering Flight Test AH 1G Helicopter with Model 212 Tail Rotor written by Gary L. Skinner and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Engineering Flight Test of the AH 1G Helicopter Hueycobra Phase B written by John R. Melton and published by . This book was released on 1969 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part 2 of the AH-1G helicopter Phase B test was conducted at Bell Helicopter Company, Fort Worth Texas, from 8 September to 26 September 1967 by the US Army Aviation Systems Test Activity, Edwards AFB, California. Part 2 comprised the Phase B testing of the basic configuration (XM-157 rocket launcher outboard on each wing). Earlier tests (Phase B, Part 1) were of the Scout (XM-157 outboard, XM-18 inboard each wing) and Hog (two XM-159 rocket launchers on each wing) configurations. The prototype aircraft for this test was similar to the one previously tested. This test emphasized stability and control testing in the basic configuration.

Download or read book Engineering Flight Test AH 1G Helicopter with Model 212 Tail Rotor written by John I. Nagata and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Helicopter Test and Evaluation written by Alastair Cooke and published by John Wiley & Sons. This book was released on 2009-02-12 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although a number of texts on helicopter aerodynamics have been written, few have explained how the various theories concerning rotorborne flight underpin practical flight test and evaluation. This book combines theoretical information on aerodynamics, stability, control and performance with details of evaluation methodologies and practical guidance on the conduct of helicopter flight tests. For each topic the relevant theory is explained briefly and followed by details of the practical aspects of testing a conventional helicopter. These include: * safety considerations * planning the tests * the most efficient way to conduct individual flights Where possible typical test results are presented and discussed. The book draws on the authors' extensive experience in flight test and flight test training and will appeal not only to professionals working in the area of rotorcraft test and evaluation, but also to helicopter pilots, rotorcraft designers and manufacturers and final year undergraduates of aeronautical engineering

Download or read book Artificial Icing Tests AH 1G Helicopter written by Carl F. Mittag and published by . This book was released on 1974 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: The United States Army Aviation Engineering Flight Activity conducted a limited in-flight artificial icing evaluation of the AH-1G helicopter from 22 October through 6 November 1973 at Fort Wainwright, Alaska, and from 22 March through 2 April 1974 in the vicinity of Moses Lake, Washington. During the test program 8.5 hours of productive flight time were flown, of which 4.0 hours were in the artificial icing environment. Three deficiencies were noted which adversely affect the safe operation of the AH-1G helicopter in an icing environment.