+ 1-888-787-5890  
   + 1-302-351-4405  

Essay/Term paper: Apollo 13 (as-508): houston, we have a problem.

Essay, term paper, research paper:  Science Reports

Free essays available online are good but they will not follow the guidelines of your particular writing assignment. If you need a custom term paper on Science Reports: Apollo 13 (AS-508): Houston, We Have A Problem., you can hire a professional writer here to write you a high quality authentic essay. While free essays can be traced by Turnitin (plagiarism detection program), our custom written essays will pass any plagiarism test. Our writing service will save you time and grade.

Apollo 13 (AS-508): Houston, we have a problem.

The Apollo 13 mission was launched at 2:13 p.m. EST, April 11, 1970 from
launch complex 39A at Kennedy Space Center. The space vehicle crew consisted of
James A. Lovell, Jr. commander, John L. Swigert, Jr., command module pilot and
Fred W. Haise, Jr. lunar module pilot.
The Apollo 13 Mission was planned as a lunar landing mission but was
aborted en route to the moon after about 56 hours of flight due to loss of
service module cryogenic oxygen and consequent loss of capability to generate
electrical power, to provide oxygen and to produce water.
Spacecraft systems performance was nominal until the fans in cryogenic
oxygen tank 2 were turned on at 55:53:18 ground elapsed time (GET). About 2
seconds after energizing the fan circuit, a short was indicated in the current
from fuel cell 3, which was supplying power to cryogenic oxygen tank 2 fans.
Within several additional seconds, two other shorted conditions occurred.
Electrical shorts in the fan circuit ignited the wire insulation, causing
temperature and pressure to increase within cryogenic oxygen tank 2. When
pressure reached the cryogenic oxygen tank 2 relief valve full-flow conditions
of 1008 psi, the pressure began decreasing for about 9 seconds, at which time
the relief valve probably reseated, causing the pressure to rise again
momentarily. About a quarter of a second later, a vibration disturbance was
noted on the command module accelerometers.
The next series of events occurred within a fraction of a second between
the accelerometer disturbances and the data loss. A tank line burst, because of
heat, in the vacuum jacket pressurizing the annulus and, in turn, causing the
blow-out plug on the vacuum jacket to rupture. Some mechanism in bay 4 combined
with the oxygen buildup in that bay to cause a rapid pressure rise which
resulted in separation of the outer panel. The panel struck one of the dishes of
the high-gain antenna. The panel separation shock closed the fuel cell 1 and 3
oxygen reactant shut-off valves and several propellant and helium isolation
valves in the reaction control system. Data were lost for about 1.8 seconds as
the high-gain antenna switched from narrow beam to wide beam, because of the
antenna being hit and damaged.
As a result of these occurrences, the CM was powered down and the LM was
configured to supply the necessary power and other consumables.
The CSM was powered down at approximately 58:40 GET. The surge tank and
repressurization package were isolated with approximately 860 psi residual
pressure (approx. 6.5 lbs of oxygen total). The primary water glycol system was
left with radiators bypassed.
All LM systems performed satisfactorily in providing the necessary power
and environmental control to the spacecraft. The requirement for lithium
hydroxide to remove carbon dioxide from the spacecraft atmosphere was met by a
combination of the CM and LM cartridges since the LM cartridges alone would not
satisfy the total requirement. The crew, with direction from Mission Control,
built an adapter for the CM cartridges to accept LM hoses.
The service module was jettisoned at approximately 138 hours GET, and
the crew observed and photographed the bay-4 area where the cryogenic tank
anomaly had occurred. At this time, the crew remarked that the outer skin
covering for bay-4 had been severely damaged, with a large portion missing.
The LM was jettisoned about 1 hour before entry, which was performed
nominally using primary guidance and navigation system.


Other sample model essays:

Science Reports / The Hale Bopp Comet
The Hale Bopp Comet As I am sure all of you know, we have recently been able to see a new but not permanent additon to the night sky. This addition is known as Hale-Bopp, a comet that ...
Science Reports / Mercury
Mercury Mercury is the closest planet to the sun. It"s average distance from the sun is approximately fifty-eight million km and it"s diameter is 4875 km, making it the second smallest pl...
14 ELEMENTS OF A SUCCESSFUL SAFETY & HEALTH PROGRAM Element 1: Hazard Recognition, Evaluation and Control. Establishing and maintaining safe and healthful conditions required indenifing haza...
Science Reports / Assisted Suicides
Assisted Suicides The Washington Post September 2-8, 1996 Picture yourself in this situation. You go to the doctor for a routine physical. You look fine. You feel good. All those...
Abortion: Points of View It is nearly impossible anymore to find someone who doesn't have an opinion about abortion, and probably a strong opinion at that. Yet the endless debates on the t...
Abortion / Abortion
Abortion 101-36 Persuasive Essay 9/22/96 Abortion, the easiest way to fix one's mistakes. I mean, if one is going to screw around and accidentally get knocked up, why should they have t...
Abortion / Abortion Report
Abortion Report I have chosen for my topic Abortion. I think that it is a topic that is very important in today's society however it is often dodged or avoided. Different Presidents say d...
Abortion and the Mentally Handicapped Matt Domin MWF 9:00 Ms. Smith, We of the Ethics Committee have reviewed your case for an extended period of time. We took into consideration, for o...
Abortion and My Own Thoughts John Harvell English 110U February 12, 1997 What would it be like to die so young and so fragile? What would it be like to kill something so young and so ...
Abortion Should Be Made Illegal Abortion should be made illegal. Abortion is murder, it is the killing of an unborn baby. In today's society, regular people are not allowed to go out and...
Experience with Dream Essay - Reliable and great customer service. Quality of work - High quality of work.
Browns Mills, New Jersey, United States
Dream Essay - Very reliable and great customer service. Encourage other to try their service. Writer 91463 - Provided a well written Annotated Bibliography with great deal of detail per the rubric.
Browns Mills, New Jersey, United States
it is always perfect
Frederick, Maryland, United States
The experience with Dream Essay is stress free. Service is excellent and forms various forms of communication all help with customer service. Dream Essay is customer oriented. Writer 17663 is absolutely excellent. This writer provides the highest quality of work possible.
Browns Mills, New Jersey, United States
Only competent & proven writers
Original writing — no plagiarism
Our papers are never resold or reused, period
Satisfaction guarantee — free unlimited revisions
Client-friendly money back guarantee
Total confidentiality & privacy
Guaranteed deadlines
Live Chat & 24/7 customer support
All academic and professional subjects
All difficulty levels
12pt Times New Roman font, double spaced, 1 inch margins
The fastest turnaround in the industry
Fully documented research — free bibliography guaranteed
Fax (additional info): 866-332-0244
Fax (additional info): 866-308-7123
Live Chat Support
Need order related assistance?—Click here to submit a inquiry
© Dreamessays.com. All Rights Reserved.
Dreamessays.com is the property of MEDIATECH LTD