Results 1 to 3 of 3

Math Help - Did I work this problem correctly...Aggregate RDF problem--series combination

  1. #1
    Newbie
    Joined
    Jun 2012
    From
    atlanta
    Posts
    3

    Did I work this problem correctly...Aggregate RDF problem--series combination

    Using the information from table 1 below, what is the aggregate RDF for a vehicle configuration using 3 strap-on boosters?
    Assume a 'series' combination of the launch elements shown for your calculation.

    TABLE 1:
    Vehicle subsystem subsystem reliability Replacement cost
    1st stage liq engine 0.991 $25.4M
    2nd Stage liq engine 0.995 $17.1M
    payload section/fairing 0.993 $12.7M
    Strap-on Booster 0.997 $4.2M

    I assumed that an aggregate RDF would mean to work this is as a simple series combination. I was not sure if I needed to include all the components in the series or just the 3 strap-on booster rockets. I included all components and worked it this way:
    Reliability = 1st stage x 2nd stage x payload section x booster 1 x booster 2 x booster 3
    = .991 x .995 x .993 x .997 x .997 x .997 = 0.97035 = 0.970
    RDF = 1-reliability = 1 - .97035 = 0.02965 = 0.0230

    Is this correct? Please let me know. I have to have this right in order to work the other problems.

    Thanks,
    coolmom
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Newbie
    Joined
    Jul 2012
    From
    Alabama
    Posts
    2

    Re: Did I work this problem correctly...Aggregate RDF problem--series combination

    Hello, did you get the correct answer for this? I have a similar problem I am trying to solve
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Jul 2012
    From
    Decatur, AL
    Posts
    1

    Re: Did I work this problem correctly...Aggregate RDF problem--series combination

    Did you ever get a resonse for this question? I assume you are taking MG 415 at Athens?
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Did I work these equations out correctly?
    Posted in the Algebra Forum
    Replies: 1
    Last Post: August 29th 2010, 11:56 AM
  2. Have I done this 'show that' problem correctly?
    Posted in the Pre-Calculus Forum
    Replies: 5
    Last Post: July 10th 2010, 07:59 AM
  3. Check my work on alternating series problem?
    Posted in the Calculus Forum
    Replies: 2
    Last Post: April 29th 2010, 05:31 PM
  4. Aggregate demand - aggregate supply model
    Posted in the Advanced Math Topics Forum
    Replies: 0
    Last Post: April 26th 2010, 10:24 PM
  5. Did I do this problem correctly?
    Posted in the Calculus Forum
    Replies: 1
    Last Post: March 28th 2007, 12:06 AM

Search Tags


/mathhelpforum @mathhelpforum