Question: Please help! NASA is planning to send a spacecraft from Earth to Mercury. For the purposes of this assignment, let's assume a coplanar transfer between

Please help! NASA is planning to send a spacecraft from Earth to Mercury. For the purposes of this assignment, let's assume a coplanar transfer between circular planetary orbits and there is no gravitational influence from Venus. Assume the upper stage of the launch vehicle performs the Trans Mercury Injection (vTMI) in from a circular low-Earth orbit atalt = 202 km. The mission calls for a periapsis altitude at Mercury ofrp= 122 km. Unless otherwise noted, use 4 decimal places in your calculations and answers, as applicable.

Use the information below regarding the parameters for this assignment:

Gravitational Parameter (Earth)E= 3.986 x 105km3/s2
Gravitational Parameter (Mercury)M= 2.2033 x 104km3/s2
Gravitational Parameter (Sun)S= 1.327124 x 1011km3/s2(1 AU3/TU2)
Semimajor Axis (Earth)rE= 1.0000 AU
Semimajor Axis (Mercury)rM= 0.3871 AU
Canonical Units (1 AU)1 AU = 149597871 km
Canonical Units (1 TU)1 TU = 5022643 s (58.1324 days)
Canonical Units (1 AU/TU)1 AU/TU = 29.7847 km/s

1. Calculate the semimajor axis for this Earth-Mercury Hohmann transfer. Express your answer inAUandkm.

2. Calculate the flight time (tH) for the interplanetary cruise of this Hohmann-transfer ellipse. Express your answer in days, hours, minutes, and seconds (i.e.,2:2:25:23or2 days, 2 hr, 25 min, 23 s). Use 4 decimal places in your calculations, none required in the final answer.

3. Calculate the energy () for this Hohmann transfer ellipse. Express your answer in bothAU2/TU2andkm2/s2.

4. Calculate the Sun-relative velocity (v1) at Earth departure (Aphelion on the Hohmann transfer). Express your answer in bothAU/TUandkm/s.

5. Calculate the Earth-relative hyperbolic excel velocity (v+). Express your answer in bothAU/TUandkm/s.

6. Calculate the launch energy (C3) required for this mission. Express your answer in bothAU2/TU2andkm2/s2.

7. Calculate the energy of the Earth-departure hyperbola (E). Express your answer in bothAU2/TU2andkm2/s2.

7. Calculate the circular parking orbit velocity (vLEO) and the perigee velocity (vp) of the Earth-departure hyperbola.Express your answer inkm/s.

8. Determine the velocity impulse (vTMI) needed in the LEO for the "trans-Mercury injection" (TMI).Express your answer inkm/s.

9. Calculate the Sun-relative velocity (v2) at Mercury's SOI (perihelion on the Hohmann transfer). Express your answer in bothAU/TUandkm/s.

10. Calculate Mercury's orbit velocity (vM). Express your answer in bothAU/TUandkm/s.

11. Calculate the Mercury-relative hyperbolic arrival velocity (v). Express your answer in bothAU/TUandkm/s.

12. Calculate the B-plane offset distance (d) for the target periapsis altitudealtp= 122 km.Express your answer inkm.

13. Compute the spacecraft's velocity at periapsis passage (vp).Express your answer inkm/s.

14. Calculate the low-Mercury orbit speed (vLMO) for the circular orbit of the spacecraft.Express your answer inkm/s.

15. Calculate the impulse (v) required for insertion into a circular Mercury orbit.Express your answer inkm/s.

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!