My particles live too long! How do I shorten life?

I am new to Unity. I am using Unity 4.6.3. I bought some rockets from the Unity Asset store which came with
particle emitters already defined.

I have tried to read the documentation and played with some of the values, but I am still not sure what setting to modify to shorten the life of the particles. I want to make the particles live 25% of their current life.

Below are the settings I see for the Ellipsoid Particle Emitter, Particle Animator, and Particle Renderer.

Ellipsoid Particle Emitter
Emit check box is checked.
Min Size = 1
Max Size = 2
Min Energy = 3
Max Energy = 3
Min Emission = 50
Max Emission = 75
World Velocity
X = 0 Y = -2 Z = 0
Local Velocity
X = 0 Y = 0 Z = 0
Rnd Velocity
X = 0 Y = 0 Z = 0
Emitter Velocity Scale = 0.05
Tangent Velocity
X = 0 Y = 0 Z = 0
Angular Velocity = 0
Rnd Angular Velocity = 0
Rnd Rotation check box is not checked.
Simulate in Worldspace check box is checked.
One Shot check box is not checked.
Ellipsoid
X = 0.01 Y = 0.01 Z = 0.01
Min Emitter Range = 0

Particle Animator
Does Animate Color check box is checked.
Color Animation [0] <color defined>
Color Animation [1] <color defined>
Color Animation [2] <color defined>
Color Animation [3] <color defined>
Color Animation [4] <color defined>
World Rotation Axis
X = 0 Y = 0 Z = 0
Local Rotation Axis
X = 0 Y = 0 Z = 0
Size Grow = 0
Rnd Force
X = 0 Y = 0 Z = 0
Force
X = 1 Y = -3 Z = 1
Damping = 1
Autodestruct check box is not checked.

Particle Renderer
Cast Shadows check box is checked.
Receive Shadows check box is checked.
Materials
Size = 1
Element 0 = Fire
Use Light Probes check box is not checked.
Light Probe Anchor = None (Transform)
Camera Velocity Scale = 0
Stretch Particles = Billboard
Length Scale = 2
Velocity Scale = 0
Max Particle Size = 0.025
UV Animation
X Tile = 1
Y Tile = 1
Cycles = 1

My rockets start at the bottom of the screen. The user presses a "Fire" button. The rocket is then activated and moves up because I apply a gravity Y = 9.81 instead of Y = -9.81 in the PhysicsManager. The particle trail lingers behind the rocket much longer than I want. I would like the rocket trail to leave the top of the screen shortly after the rocket leaves the top of the screen.

Also, I have noticed that the rocket trail is curved to the right as if wind is being applied to the particles.
How to I eliminate the curving of the trail?

Below is a link to screen shots:
http://1drv.ms/1GkIy0m

 

Reduce the Max Energy and Min Energy values. 1 unit = 1 second to live.
http://docs.unity3d.com/ScriptReference/ParticleEmitter-maxEnergy.html

 

Thanks! That's just what I needed!