The complete papers

WELL DONE!

Almost...a little bit more... COME ON!

Hey boys, Amber Agee-DeHart says:

"Please communicate to your students we are impressed with their technical knowledge and ability to communicate complex information."

QUESTIONS (in red):

What type of spacecraft or structures would the composite sandwich structures be used? This section should be far more comprehensive as it is the "pitch" and the justification for the experiment. You've not provided any background information here. And the actual connection to an Earth or space-based problem or need is not clearly communicated. This section should be more comprehensive, should take you the most time to write, should demonstrate your research, and should be the most challenging to write.

¿Qué tipo de naves espaciales o estructuras usarían las estructuras sandwich?

What problems or needs excite with the current type of composite structures used in spacecraft or technology?

¿Qué problemas o necesidades motivan el uso de estructuras compuestas utilizadas en naves espaciales?

What are the implications if your hypothesis is or is not supported? How can this information and research be used in the future?

¿Cuáles son las implicaciones si su hipótesis es o no es verificada? ¿Cómo se puede utilizar esta información e investigación en el futuro?

The documents to be examined are:

A4S 361 (structures):

https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20070022458.pdf

A4S 362 (bolts):

http://escies.org/ftp/ecss.nl/Handbooks/ECSS-E-HB-32-23A(16April2010).pdf

ON THE TRACK!

CONGRATS!

EXPERIMENTS FOR SCIENTIFIC BALLOON

Hello everyone!

Our proposals for the Scientific Balloon are:

1 - The effects of  vacuum from outer space on space structures

2 - The effects of low temperatures on bolts adjustment

(Spanish translation below...)

 

1 - Los efectos del vacío del espacio exterior en estructuras espaciales

2 - Los efectos de las bajas temperaturas en los ajustes de tornillos

ZOOM MEETING!

Hello everyone, please, PLEASE, attend to zoom meeting WED 04/15 at 07 p.m.

(Hola a todos, por favor, asistan a la reunión ZOOM el MIERCOLES a las 19 hs.)

 

Pablo M. González le está invitando a una reunión de Zoom programada.

Tema: CiS meeting

Hora: 15 abr 2020 07:00 PM Buenos Aires, Georgetown

Unirse a la reunión Zoom

https://us04web.zoom.us/j/76815367961?pwd=WnN5d1BBS3ZnR2Nyb21GczBRcmY1Zz09

ID de reunión: 768 1536 7961

Contraseña: cis2020

DEADLINES

PLAZOS: 

CiS 2020 Fact Sheets

CUBE constraints:

(Condicionamientos, leer cuidadosamente):

http://www.astroeduc.com.ar/CiS2020AirborneScienceFactSheets.pdf

Cube DIMENSIONS

Our experiment should fit in a 3.5x3.5x3.5 cm space:

Hi everyone:

I propose two new experiments for the balloon flight:

A) The effect of emptiness in a sandwich structure.
B) The effect of low temperatures in a bolted joint.

In order to perform these experiments, we must investigate WHICH ARE THE ATMOSPHERE CONDITIONS AT 30.000 m.

Spanish: les propongo dos nuevos experimentos para el globo: como se comportan las estructuras tipo sandwich y las juntas atornilladas. Investiguen que fenómenos se producen al borde del espacio.

Our experiment

In the previous link, you have a first look at the project. Our goal is to design, construct and test two experiments: the behavior of structures and bolts in the space environment.

Details:

Name: The effects of high accelerations on space structures

Codename: Alpha Mec

If the acceleration is high then the structure warps because the acceleration increases the weight of the structure.

Our proposal is to design and build two different “sandwich” structures pre-loaded with equal weights in order to determine the best structure that can resist the axial loading (usually in the “z” axis), measuring the deformation on the structure thickness.

What is/are the independent variable(s) for this experiment? 

The independent variables are the forces produced by the acceleration in the motion direction.

What is/are the dependent variable(s) for this experiment? 

The dependent variable is the thickness of the panels.

What is the connection to the Earth or space-based problem or need - OR - contribution to current research? 

The connection to the space-based problems is the study of the stress that supports the rocket and the payload. In the launch and cruise stage, all the structures are under high forces, produced by high accelerations. These forces, called “g-forces” multiply the weight of all the structures by a factor, usually greater than 3g. It means that in the flight direction the stress is significantly high.

What is the need/justification for conducting the experiment in a space or near-space environment? *

The best way to study stress is to perform a test in a real rocket. On Earth, a centrifugal machine increases gradually the acceleration. It is quite difficult to design a hardware that reacts to these forces the same way a rocket would.

Name: The effects of vibrations on bolts adjustment

Codename: Beta Mec

If the vibrations on the rocket are severe then the bolts loosen up because the torque is not adequate.

We propose to design a structure that supports four different kinds of bolts and nuts, with the intention of joining two panels with the same adjustment force (torque) to determine the variation of the adjustment due to the high vibration environment of the rocket.

What is/are the independent variable(s) for this experiment? 

The independent variables are the vibrations on the three-axis produced by the movement and rocket motor.

What is/are the dependent variable(s) for this experiment? 

The dependent variable is the degree of adjustment of the bolts.

What is the connection to the Earth or space-based problem or need - OR - contribution to current research? 

In the rocket flight, there are two critical moments: launch and MECO (main engine cut-off). In these moments the vibrations are high enough to get through the entire structure. This can result in a dangerous phenomenon called “resonance”. Our proposal is to study how vibrations influence the bolts torque.

What is the need/justification for conducting the experiment in a space or near-space environment? *

We need to study these vibrations on a rocket in flight. On Earth there are special machines (shakers) which perform simulations of these kinds of vibrations but they are very difficult to access and the tests lay far beyond our budget.

Hola a todos:

Vamos a oficializar como idioma predeterminado el inglés. Pero siempre voy a incluir un breve resumen al final en español.

Welcome to Cubes in Space!

Through this blog, we keep in touch all the time (Does this phrase exists?).
Well students, lets work!

Above is the official link of CiS:

https://www.cubesinspace.com/