roll and pitch maneuvers

Portuguese translation: manobras de rolagem e arfagem

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English term or phrase:	roll and pitch maneuvers
Portuguese translation:	manobras de rolagem e arfagem
Entered by:	Lilian Magalhães

20:14 Jun 8, 2019

English to Portuguese translations [PRO]
Tech/Engineering - Astronomy & Space / NASA

English term or phrase: roll and pitch maneuvers

https://space.stackexchange.com/questions/5065/why-did-apoll...

When the Space Shuttle launched, it would perform a roll and then pitch to establish its ascent trajectory. There is fairly straightforward rationale for this. The vehicle's aerodynamic shape, the benefit to keep the horizon visible through the flight deck's upper windows being the most obvious.
Flying long before the Shuttle, the Apollo launch profile has been described in a very similar way - a roll to orient the vehicle so that a pitch maneuver puts it onto trajectory.
My question is this: With no large-scale external features to break the vehicle's apparent radial symmetry, why was it necessary/preferred for Apollo to roll first then pitch instead of forgoing the roll

Lilian Magalhães KudoZ activity Questions: 5557 (6 open) (103 closed without grading) Answers: 42 Brazil
Local time: 09:25

manobras de rolagem e arfagem

Explanation:
http://mtc-m16d.sid.inpe.br/col/sid.inpe.br/mtc-m19/2011/01....

Manobra de atitude
Os ângulos iniciais do veículo espacial são apresentados na Tabela 5.1. O controlador de atitude deve seguir os valores dos ângulos de referência (Rolagem, Arfagem e Guinada) conforme descrição a seguir:

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Note added at 21 minutos (2019-06-08 20:35:27 GMT)
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http://mtc-m16d.sid.inpe.br/col/sid.inpe.br/mtc-m19/2012/08....

A primeira simulação é realizada sem que o sistema sofresse influência das vibrações. As Figuras 1, 2 e 3 mostram os valores de referência (curva em rosa) e correntes (curva em azul) dos ângulos de rolagem (roll), arfagem (pitch) e guinada (yaw).

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Note added at 3 días 3 horas (2019-06-11 23:51:13 GMT) Post-grading
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Muito obrigada, Lilian!

Selected response from:

Andrea Pilenso
Brazil
Local time: 09:25

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thanks
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manobras de rolagem e arfagem

Andrea Pilenso

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manobras de rolagem e arfagem

Andrea Pilenso
Brazil
Local time: 09:25
Native speaker of: Portuguese
PRO pts in category: 36

Grading comment

thanks

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Portuguese translation: manobras de rolagem e arfagem

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