Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Assuming the average Earth Radius R E = 6378 km : The question I have are below: A Falcon 9 launched from Cape Canaveral (

Assuming the average Earth RadiusRE= 6378 km:

The question I have are below:

A Falcon 9 launched from Cape Canaveral (28 N Latitude) delivers a satellite directly (iinitial= 28) into a low-Earth circular parking orbit at an altitude ofalt1= 222 kmwith an augment of perigee of = 180. The satellite needs to be moved into its final GPS orbit with an altitude ofalt2= 38622 kmand at an inclination ofifinal= 66. Use 3 decimal places in your calculations and answers, as applicable.

Determine the semimajor axis (at) for the Hohmann transfer orbit.

Calculate the apse velocities (v1andv2) for this Hohmann transfer orbit.

Calculate the initial and final circular velocities (vc1andvc2) of the initial and final orbits.

Determine the velocity impulse required in the LEO (v1) and at apogee (v2).

Calculate the time of flight (tf) for this Hohmann transfer. Express your final answer in hours, minutes, and seconds (i.e.,12:25:23or12 hr, 25 min, 23 sec). Use 3 decimal places in your calculations, none required in the final answer.

Now that the satellite is at its new altitude ofalt2= 38662 km, the satellite needs to be shifted from it is initial inclination ofiinitial= 28to its required inclination ofifinal= 66. Calculate the velocity impulse (v3) required for a pure inclination change.

Calculate the total change in velocity (vtotal) required to perform the Hohmann coplanar transfer to the circular GPS orbit and then a pure inclination change.

Instead of calculating a pure inclination change, calculate the velocity impulse (v3) to complete the inclination change at apogee of the Hohmann transfer.

Calculate the total change in velocity (vtotal) required to perform the Hohmann coplanar transfer to the circular GPS orbit and then an inclination change at apogee of the Hohmann transfer. Note: The final coplanar maneuver at apogee to circularize the GPS orbit is the same as the 2ndimpulse velocity change in Problem 4.

In this final maneuver, instead of performing 2 maneuvers to complete the final stage of the Hohmann transfer and a separate inclination change, calculate the apogee impulse velocity required to perform a 3-D maneuver to change the inclination and energy to the desired inclination ofifinal= 66and stabilize the movement into the desired circular GPS orbit.

Calculate the total change in velocity (vtotal) required to perform the Hohmann transfer and the 3-D maneuver at apogee to change the plane and circularize the orbit. (8 Points)

List calculations for each of the scenarios below (answers in previous questions). Then compare discuss the implications of these results for the total change in velocity (vtotal) required in each of the scenarios:

Performing a coplanar Hohmann transfer to the circular GPS orbit, then a pure inclination change .

Performing the first Hohmann transfer to raise apogee to the GPS orbit, then a pure inclination change at apogee, followed by a coplanar maneuver at apogee to establish the circular GPS orbit .

Performingthe first Hohmann transfer to raise apogee to the GPS orbit, then a 3-D maneuver at apogee to change the plane and circularize the orbit ).

Step by Step Solution

There are 3 Steps involved in it

Step: 1

Solutions Step 1 Here the question mentioned here as that a Falcon 9 launched from Cape Canaveral 28 N Latitude delivers a satellite directly initial 28 into a lowEarth circular parking orbit at an al... blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Vector Mechanics for Engineers Statics and Dynamics

Authors: Ferdinand Beer, E. Russell Johnston, Jr., Elliot Eisenberg, William Clausen, David Mazurek, Phillip Cornwell

8th Edition

73212229, 978-0073212227

More Books

Students also viewed these Mechanical Engineering questions

Question

Convert 2017 to a numeral in the base indicated. 12

Answered: 1 week ago

Question

1 Let f(x) = H Then (fog)(2) (fog)(x) = 3 = and g(x) = 4x+8.

Answered: 1 week ago

Question

Why is it useful to understand the nonverbal language of a culture?

Answered: 1 week ago