B-29 : pilots' and flight engineers' training manual for the Superfortress /

Includes index.

Pilotage in the Port of New York /

Final report, July 1978.

List of masters, mates, pilots, and engineers of merchant steam and other motor vessels, licensed during the year ended December 31, ... Authority: Section 4411, Revised statutes of the United States.

Mode of access: Internet.

Aviation weather for pilots and flight operations personnel /

"AC 00-6A."

Establishment of a national glider program : hearings before a subcommittee of the Committee on Education and Labor, United States Senate, Seventy-seventh Congress, first session, on S.1749, a bill to promote the national defense and preparedness through the creation of a vast reservoir of potential airplane pilots and mechanics, and for other purposes. September 30; October 1, 7, and 8, 1941.

Elbert D. Thomas, chairman.

Das hamburgische Lotswesen auf der Unterelbe bis zum Jahre 1810.

Cover-title.

Die hamburgischen Lotsenordnungen.

Programm--Höhere Staatsschule in Cuxhaven.

Coast pilot manual

Mode of access: Internet.

General aviation pilot stall awareness training study /

Mode of access: Internet.

Coast pilot manual

Mode of access: Internet.

The effects of +Gz force on the bone mineral density of fighter pilots

HYPOTHESIS Bone is a metabolically active tissue which responds to high strain loading. The purpose of this study was to examine the bone response to high +Gz force loading generated during high performance flying. METHODS The bone response to +Gz force loading was monitored in 10 high performance RAAF pilots and 10 gender-, age-, height-, weight-matched control subjects. The pilots were stationed at the RAAF base at Pearce, Western Australia, all completing the 1-yr flight training course. The pilots flew the Pilatus PC-9 aircraft, routinely sustaining between 2.0 and 6.0 +Gz. Bone mineral density (BMD) and bone mineral content (BMC) were measured at baseline and 12 mo, using the Hologic QDR 2000+ bone densitometer. RESULTS After controlling for change in total body weight and fat mass, the pilots experienced a significant increase in BMD and BMC for thoracic spine, pelvis, and total body, in the magnitude of 11.0%, 4.9%, and 3.7%, respectively. However, no significant changes in bone mineral were observed in the pilots lumbar spine, arms or legs. The control group experienced a significant decrease in pelvic BMC, with no other bone mineral changes observed at any site. CONCLUSIONS These findings suggest that site specific BMD is increased in response to high +Gz forces generated during high performance flying in a PC-9.

Training for Antenna Selection in Time-Varying Channels: Optimal Selection, Energy Allocation, and Energy Efficiency Evaluation

Single receive antenna selection (AS) is a popular method for obtaining diversity benefits without the additional costs of multiple radio receiver chains. Since only one antenna receives at any time, the transmitter sends a pilot multiple times to enable the receiver to estimate the channel gains of its N antennas to the transmitter and select an antenna. In time-varying channels, the channel estimates of different antennas are outdated to different extents. We analyze the symbol error probability (SEP) in time-varying channels of the N-pilot and (N+1)-pilot AS training schemes. In the former, the transmitter sends one pilot for each receive antenna. In the latter, the transmitter sends one additional pilot that helps sample the channel fading process of the selected antenna twice. We present several new results about the SEP, optimal energy allocation across pilots and data, and optimal selection rule in time-varying channels for the two schemes. We show that due to the unique nature of AS, the (N+1)-pilot scheme, despite its longer training duration, is much more energy-efficient than the conventional N-pilot scheme. An extension to a practical scenario where all data symbols of a packet are received by the same antenna is also investigated.