| Preliminary Airworthiness Evaluation of the RC-12K |
AUG 89 |
102 pages |
| Authors:
Joseph C. Miess; George M. Yamakawa; Robert D. Robbins; Warren P. Gould; ARMY AVIATION ENGINEERING FLIGHT ACTIVITY EDWARDS AFB CA
|
 | During this test program, ten flights were conducted for a total of 22.8 hours, of which 14.6 hours were productive. Tests were performed in the Guardrail/Common Sensor System mission configuration ballasted to an average gross weight of 16,000 lb and centers of gravity at fuselage station 188.1 (forward) and 195.1 (aft). Test results were evaluated against military specification MIL-F-8785C for handling qualities. Performance data presented in the operator's manual were ... |
|
| Airworthiness and Flight Characteristics Evaluation of the EH-60A (Quick Fix) Helicopter |
OCT 88 |
98 pages |
| Authors:
David B. Cripps; Donald L. Underwood; David A. Downey; George M. Yamakawa; Charles Q. Crowell; ARMY AVIATION ENGINEERING FLIGHT ACTIVITY EDWARDS AFB CA
|
| The U.S. Army Aviation Engineering Flight Activity conducted a limited Airworthiness and Flight Characteristics test of the EH-60A (Quick Fix) helicopter. During the test program, 49 flights were conducted for a total of 63.5 hours, of which 47.1 were productive. Initially the EH-60A was modified to the utility configuration where 22.3 productive hours were flown airspeed calibration, level flight performance, and vibration characteristics. All tests were performed at a Quick ... |
|
| Flaps-Up Takoff Performance of the OV-1D Aircraft with YT53-L-704 Engine Installed |
MAY 87 |
|
| Authors:
Joseph C. Miess; George M. Yamakawa; Jeffrey L. Linehan; Robert D. Robbins; ARMY AVIATION ENGINEERING FLIGHT ACTIVITY EDWARDS AFB CA
|
 | The flaps-up procedure eliminates the portion of the takeoff profile where the aircraft cannot accelerate because the flaps are down and the flaps cannot be retracted because the airspeed is below flaps-up minimum control speed. Flaps-up procedures avoided the temporary altitude loss which occurred with the flaps-15 takeoff procedure when the flaps were retracted at high gross weight/density altitude conditions. Flaps-up takeoffs should be incorporated into operational unit procedures. Accelerate-stop ... |
|
| Evaluation of the OV-1D Aircraft with the YT53-L-704 Engine and Rudder Augmentation System. Phase 2 |
NOV 86 |
|
| Authors:
George M. Yamakawa; Joseph C. Miess; Jeffrey L. Linehan; Joseph L. Piotrowski; ARMY AVIATION ENGINEERING FLIGHT ACTIVITY EDWARDS AFB CA
|
| A 3-phase evaluation of the OV-1D aircraft with increased power YT53- L- 704 engines and a prototype rudder augmentation system (RAS) installation was performed. Phase I involved engine build-up, initial engine and RAS installation, engine/propeller/airframe compatibility tests, and initial flight tests. The Louvered Scarfed Shroud Suppressor (LSSS) system was removed following a high power ground run due to high engine nacelle temperatures which caused extensive damage to the fire shield ... |
|
| Evaluation of the OV-1D Stall Warning Characteristics |
JAN 86 |
|
| Authors:
Robert D. Robbins; Jeffrey L. Linehan; George M. Yamakawa; ARMY AVIATION ENGINEERING FLIGHT ACTIVITY EDWARDS AFB CA
|
| A high angle of attack flight and stall characteristics evaluation of the OV-1D(C) surveillance airplane was conducted. The aircraft was equipped with a Safe Flight Instrument Corp. (SFIC) prototype stall warning system. Tests were flown with and without external aircraft mission/survivability equipment including the Louvered Scarfed Shroud Suppressor (LSSS) used for engine infrared signature suppression. A total of 44.9 productive hours were flown. Dual and single-engine unaccelerated stall, dual-engine accelerated ... |
|
| Airworthiness and Flight Characteristics Evaluation Improved Main Rotor Blade Installed on a YAH-1R Helicopter. |
NOV 1977 |
|
| Authors:
George M. Yamakawa; John R. Niemann; Raymond B. Smith; Ralph Woratschek; James E. Jenks Jr; ARMY AVIATION ENGINEERING FLIGHT ACTIVITY EDWARDS AFB CALIF
|
| The United States Army Aviation Engineering Flight Activity conducted an airworthiness and flight characteristics evaluation of the Kaman Aerospace Corporation improved main rotor blade (K-747) installed on a YAH-1R helicopter. The Bell Helicopter Textron YAH-1R was tested from 25 February through 10 June 1977 at three sites in California: Edwards Air Force Base (2302-foot evaluation), Bishop (4120-foot elevation), and Coyote Flats (9980-foot elevation). A total of 82.9 test flight hours ... |
|
| Guardrail IIA RU-21H Evaluation. |
JUL 1974 |
|
| Authors:
George M. Yamakawa; Tom P. Benson; Larry K. Brewer; ARMY AVIATION ENGINEERING FLIGHT ACTIVITY EDWARDS AFB CALIF
|
| The United States Army Aviation Engineering Flight Activity conducted a flying qualities evaluation of the GUARDRAIL IIA RU-21H aircraft, manufactured by Beech Aircraft Corporation. The RU-21H aircraft was tested at the Beech facility in Wichita, Kansas, on 11 and 12 May 1974. During the test program, 4.0 productive hours were flown. The program included a stability and control evaluation and miscellaneous engineering tests necessary to provide substantiating data to aid ... |
|
| Engineering Flight Test, AH-1G Helicopter, Heavyweight Autorotational Evaluation. |
MAY 1974 |
|
| Authors:
Joseph C. Watts; George M. Yamakawa; Leslie J. Hepler; Leonard M. Free; ARMY AVIATION SYSTEMS TEST ACTIVITY EDWARDS AFB CALIF
|
| 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. ... |
|
| Attack Helicopter High-Altitude Evaluation, Blackhawk S-67 Helicopter. |
JUL 1972 |
|
| Authors:
George M. Yamakawa; Albert L. Winn; William R. Horton; ARMY AVIATION SYSTEMS TEST ACTIVITY EDWARDS AFB CALIF
|
| The US Army Aviation Systems Test Activity conducted a limited evaluation of the performance and handling qualities of the Sikorsky S-67 Blackhawk helicopter at a high-altitude test site during the period 8 to 13 July 1972. This evaluation, which required five hours of productive flight time, was performed at Alamosa, Co, at density altitudes of 7830 to 10,790 feet. Except as specifically noted in this report, the performance and handling ... |
|
| Engineering Flight Test of the YCH-47B Helicopter Army Preliminary Evaluation I, II and III. |
JAN 1969 |
|
| Authors:
Norman A. Mattmuller; George M. Yamakawa; Daniel C. Dugan; Harry W. Chambers; ARMY AVIATION SYSTEMS TEST ACTIVITY EDWARDS AFB CALIF
|
| The Army Preliminary Evaluation of the YCH-47B helicopter was conducted by the US Army Aviation Systems Test Activity at Philadelphia, Pennsylvania in three phases during the period 1 March 1967 to 31 August 1967. The improvements in hover and level flight performance were defined and the change in flying qualities from those of the CH-47A helicopter were evaluated. An objectionable level of noise and vibration was encountered during ... |
|
Reports by Author
