NASA-LLIS-0395

Lessons Learned - In-Flight Spacecraft Antenna Gain and Polarization Changes

contributor author	NASA - National Aeronautics and Space Administration (NASA)
date accessioned	2017-09-04T16:07:25Z
date available	2017-09-04T16:07:25Z
date copyright	06/06/1995
date issued	1995
identifier other	BIBEQCAAAAAAAAAA.pdf
identifier uri	https://yse.yabesh.ir/std/handle/yse/70557
description abstract	Abstract: Before the first Mercury encounter, the MVM'73 high gain antenna suddenly lost 3 dB in gain and changed from circular to linear in polarization. It was suspected that either particles or chips left in the S-band feed cavity after antenna assembly caused a short circuit, or a combination of tolerance build-up and thermal effects caused a dimensional change. Worst case analysis should be preformed on any equipment suspected to be sensitive to assembly practices or tolerance build-up.
language	English
title	NASA-LLIS-0395	num
title	Lessons Learned - In-Flight Spacecraft Antenna Gain and Polarization Changes	en
type	standard
page	2
status	Active
tree	NASA - National Aeronautics and Space Administration (NASA):;1995
contenttype	fulltext
subject keywords	Administration/Organization
subject keywords	Operations
subject keywords	Spacecraft