Update 2/21/2016 – Testing Time! (a.k.a. Controlled Failing Time!)

Hi all!

We’ve been pretty busy this week. This weekend, we spent some time testing out injectors and igniters in preparation for the engine firing that will (hopefully!) come during spring break. A picture’s worth a thousand words, so I suspect a thousand pictures at 30 frames a second should be worth much more than anything I can write here!

The igniters are pretty simple; just a nichrome wire which will be wrapped (or wrapped around) some cotton soaked in kerosene. When we put 24 volts across the wire, it draws a decent amperage and glows red-hot, igniting the cotton and kerosene. It’s pretty similar to the design we were planning on last year, but it doesn’t use pyrogen, so we don’t run into restrictions bring it in and out of the proving grounds of Orbital ATK.

Nichrome wire igniter for LPRD Rocketry liquid propellant rocket engine close-up coil

A twelve inch coil after use, but still intact


Subteam Spotlight: Engine

The engine subteam will be spending the majority of this semester working with CAD softwares and simulation softwares in an attempt to fully understand the processes going on within the rocket engine. ANSYS and Autodesk CFD are our current simulation softwares of choice, and Autodesk Inventor is our CAD software. With any luck, we’l be able to incorporate advanced design features which will boost the performance of our engines through injectors which will allow us to control the combustion properties of the engine and engine geometry which gives us the most bang for our buck in terms of specific impulse and fuel efficiency.

Setup file for ANSYS simulation of LPRD Rocketry liquid propellant rocket engine injector ANSYS simulation of LPRD Rocketry liquid propellant rocket engine injector showing streamlines ANSYS simulation of LPRD Rocketry liquid propellant rocket engine injector with contours showing pressure drop

Thanks to Stephen Pham for his hard work on these simulations. Haven’t quite gotten it right, but we’re getting there!

Separately from that, we’re also working on a ceramic rocket engine with another student group, Material Advantage. You may remember us helping them with a mold last week.  In any case, the mold is finished and looks stunning.

LPRD Rocketry ceramic rocket engine prototyping mold

How pretty!

LPRD Rocketry ceramic rocket engine prototyping mold

Thanks to Material Advantage for their work on that! Unfortunately, the oven they were going to fire the engine in is waiting on maintenance, so we’ll have to wait a little while until we have a physical product. Just a prototype, so don’t get too excited just yet! Hopefully we’ll have a full size one soon and ready to fire though!

David Deng
2/21/2016

Previous                            Next

Keep Up!

Want to get an email notification when we post updates? Click this link here and fill out the form!

Advertisements

4 thoughts on “Update 2/21/2016 – Testing Time! (a.k.a. Controlled Failing Time!)

  1. Pingback: Update 2/14/2016: Forget Arrows; Cupid Shootin’ Valentines Rockets in Kerbal Space Program Tonight | LPRD Rocketry

  2. Pingback: Update 2/28/2016 – Of Rocket Models and Men | LPRD Rocketry

  3. Pingback: Update 3/5/2016 – Devil in the Details – That’s Why We Dress Rehearse | LPRD Rocketry

  4. Pingback: We are LPRD Rocketry. We Build Rocket Engines. | LPRD Rocketry

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s