Results 111 to 120 of about 9,857 (250)

Behavior of materials in vacuum Final report, Jun. 1967 - Sep. 1968 [PDF]

open access: yes
Outgassed materials condensed on magnesium overcoated aluminum mirrors irradiated with ultraviolet radiation in ...
Griffin, R. N., Scannapieco, J. F.
core   +1 more source

Grease lubricated spiral groove gyro bearings Final report [PDF]

open access: yes
Grease lubricated spiral groove bearings suitable for spin axis of gyros in automatic ...
Chu, T. Y., Mc Cabe, J. T.
core   +1 more source

Low Carbon Technology in the Distribution Network [PDF]

open access: yes, 2020
Tato práce pojednává o obecné informace o obnovitelných zdrojích energie a typech elektráren. Tato práce se soutředila na výrobu sluneční energie, a to také v případové studii modelu malé nízkonapěťové rozvodné sítě s připojenými fotovoltaickými ...
Mykhaylo Pluhin
core  

The 250AH/90A active lithium-thionyl chloride cell for Centaur-G application [PDF]

open access: yes
A high rate active Li/SOCl2 cell was designed for use in a 28 volt, 250 amp-hour space battery system. The lithium battery is being considered as a replacement of its heavier silver-zinc counterpart on board the Centaur-G booster rocket which is used to ...
Tura, D. D., Zolla, A. E.
core   +1 more source

Effect of Grease Composition on Impact-Sliding Wear

open access: yesLubricants
Impact-sliding experiments were performed by using four self-made lithium-based greases, namely Yangtze Grease 1, Yangtze Grease 2, Yangtze Grease 3, and Yangtze Grease 4.
Xinqing Wang   +3 more
doaj   +1 more source

Process for making diamonds [PDF]

open access: yes, 1973
A description is given of a device and process for making industrial diamonds. The device is composed of an exponential horn tapering from a large end to a small end, with a copper plate against the large end.
Estes, M. F., Rasquin, J. R.
core   +1 more source

Triboelectric Performance of Ionic Liquid, Synthetic, and Vegetable Oil-Based Polytetrafluoroethylene (PTFE) Greases

open access: yesLubricants
Within electrical contacts, poor electrical conductivity of lubricants can lead to triboelectric charging, causing electrostatic currents and thermal effects, which accelerate lubrication failure. This study aimed to address these challenges by producing
Nur Aisya Affrina Mohamed Ariffin   +4 more
doaj   +1 more source

Apollo experience report: Lunar module environmental control subsystem [PDF]

open access: yes
A functional description of the environmental control subsystem is presented. Development, tests, checkout, and flight experiences of the subsystem are discussed; and the design fabrication, and operational difficulties associated with the various ...
Brady, J. C., Collier, F., Gillen, R. J.
core   +1 more source

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