Results 91 to 100 of about 8,052 (227)

Design of a Solar Panel Deployment and Tracking System for Pocketqube Pico-Satellite [PDF]

open access: yes, 2017
Modularized small satellites will have even greater potential with better energy supply. In this paper, a PocketQube solar panel deployment and tracking system will be presented. The system is designed for a 3P PocketQubes.
Harkness, Patrick   +2 more
core   +1 more source

Research of the Two-stage Planetary Level Parallel Axis Structure of Wind Power Gearbox Assembly Technology

open access: yesJixie chuandong, 2015
Wind power gearbox assembly process quality has a decisive influence on the wind power gearbox assembly quality,it has important significance for improving the reliability of wind power gearbox.Aiming at the three assembly process difficulties problems ...
Zou Junwei, Huang Junqiong, You Jing
doaj  

Low-noise, high-strength, spiral-bevel gears for helicopter transmissions [PDF]

open access: yes
Improvements in spiral-bevel gear design were investigated to support the Army/NASA Advanced Rotorcraft Transmission program. Program objectives were to reduce weight by 25 percent, reduce noise by 10 dB, and increase life to 5000 hr mean-time-between ...
Handschuh, Robert F.   +3 more
core   +1 more source

An investigation of control strategies on gearbox damage [PDF]

open access: yes, 2009
The impact of control on structural elements such as tower and blades have been thoroughly researched and the validity of analysis methods based on aeroelastic simulations is widely accepted.
Crowther, Ashley   +4 more
core  

A review of gear housing dynamics and acoustics literature [PDF]

open access: yes
A review of the available literature on gear housing vibration and noise reduction is presented. Analytical and experimental methodologies used for bearing dynamics, housing vibration and noise, mounts and suspensions, and the overall geared and housing ...
Lim, Teik Chin, Singh, Rajendra
core   +1 more source

Effects of Tooth Breakage Size and Rotational Speed on the Vibration Response of a Planetary Gearbox

open access: yesApplied Sciences, 2017
A nonlinear dynamic model for a planetary gearbox with tooth breakage fault is built based on an improved rigid multibody model, and the effects of tooth breakage size and rotational speed on the vibration response of the planetary gearbox are ...
Wenguang Yang, Dongxiang Jiang, Te Han
doaj   +1 more source

Identification and proposed control of helicopter transmission noise at the source [PDF]

open access: yes
Helicopter cabin interiors require noise treatment which is expensive and adds weight. The gears inside the main power transmission are major sources of cabin noise.
Coy, John J.   +6 more
core   +2 more sources

Air vehicle simulator: an application for a cable array robot [PDF]

open access: yes, 2005
The development of autonomous air vehicles can be an expensive research pursuit. To alleviate some of the financial burden of this process, we have constructed a system consisting of four winches each attached to a central pod (the simulated air vehicle)
Carnie, Ryan   +4 more
core   +2 more sources

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