nasaforums.com

Official Forums of the National Auto Sport Association
It is currently Mon Jul 16, 2018 11:45 pm

All times are UTC - 8 hours




Post new topic Reply to topic  [ 175 posts ]  Go to page 1, 2, 3, 4, 5 ... 18  Next
Author Message
 Post subject: NP01 Prototype Progress
PostPosted: Tue Jan 27, 2015 7:45 am 
Offline
Forum Hot Lapper
Forum Hot Lapper

Joined: Thu Jan 22, 2015 1:45 pm
Posts: 70
I thought some of you might be interested in seeing a few drawings and photos as the NP01 prototype goes through design and fabrication. Here are a couple of the basic chassis and drive train layout. We'll be finalizing a lot of the content over the next few weeks so I'll post additional pics of components as they're drawn and packaged. Image
Image


Top
 Profile  
 
PostPosted: Sat Jan 31, 2015 3:28 pm 
Offline
Forum Spectator
Forum Spectator

Joined: Sun Mar 31, 2013 1:36 am
Posts: 15
Who outside of Elan is validating the performance of the safety cell? Compared to other prototype vehicles the upper portion of the structure looks to expose a significant amount of the drivers upper body to possible contact with outside objects. Do you have an image with a 90th percentile mannequin in the driving position?

What is being done in the design for front rear and side energy absorbing structures? Also anti-intrusion plates would probably be helpful to the drivers legs around the lower A-Arm attachment points, the LCAs will take a beating in any shunt, and it would be better if they stayed outside the safety cell.

Looking forward to seeing this series develop, I would be putting a deposit down if I just hadn't built a new car for this season!

-Don

_________________
SoCal AI #13

http://www.CMCParts.com


Top
 Profile  
 
PostPosted: Sun Feb 01, 2015 11:33 am 
Offline
Forum Hot Lapper
Forum Hot Lapper

Joined: Thu Jan 22, 2015 1:45 pm
Posts: 70
The first design requirement for this car was to make it safe. We could easily take weight and cost out to make it lighter and faster, but safety is the single most important design criteria so the chassis is far more stout that it needs to be. The car will also include numerous safety features not required by most current rules packages as you'll see in future images.

We do have a view with a 90% occupant which I'll post here in the near future but I think you'll find that not as much of the driver is exposed as you may suggest. The driving position is very formula car like yet the cage is tall enough accommodate a 6'7" driver so the average person will have substantial head room. We also made the greenhouse/cage tall to ease entry and exit.

As for validation of the safety structure, it meets all applicable rule requirements and in many ways exceeds the current industry standard design minimums for tubing size, wall thickness etc.. We've completed torsional analysis to verify the design and it compares very favorably with other cars we're familiar with. While I would never say we have all the answers, we do have a good bit of experience in clean sheet designs for open and closed top cars including car for leMans, IMSA, IMSA Lites,IRL, TransAm, etc. and our designs have never had an issue meeting safety related requirements.

In regards to side impact protection, force attenuation structures, suspension anti intrusion, leg containment panels and other such features, I will post drawings in the the future that include these things as the design goes along.

Thanks,
Mark


Top
 Profile  
 
PostPosted: Tue Feb 03, 2015 12:27 pm 
Offline
Forum Spectator
Forum Spectator

Joined: Thu Jan 01, 2015 2:28 pm
Posts: 15
Looking good, Mark!!!!


Top
 Profile  
 
PostPosted: Mon Feb 09, 2015 12:41 pm 
Offline
Forum Hot Lapper
Forum Hot Lapper

Joined: Thu Jan 22, 2015 1:45 pm
Posts: 70
Image


Top
 Profile  
 
PostPosted: Tue Feb 10, 2015 2:56 pm 
Offline
Forum Spectator
Forum Spectator

Joined: Sun Apr 06, 2014 4:56 pm
Posts: 32
Thanks Mark

What are the chances of a few build pictures, hardware and shop settings. Surely something must be coming together. Motors, wheels, brake components, ?? Myself and others are very anxious and would greatly enjoy a little candy. Clock is ticking towards NASA at VIR !

_________________
Bobby Butler


Top
 Profile  
 
PostPosted: Wed Feb 18, 2015 6:05 am 
Offline
Forum Spectator
Forum Spectator

Joined: Wed Feb 18, 2015 5:37 am
Posts: 1
Hi Mark,
I am one of the unfortunate folks who is on the upper end of height at 6'6", and one thing I see of concern with the 90%ile person below is the knee/hand location. I know with other sports cars, I don't have the room to fit my hand between the steering wheel and leg, causing lots of shuffle steering. Is there anything you can show or explain about leg position, and how it affects the hands while steering?

Thanks,
Phil


Top
 Profile  
 
PostPosted: Wed Feb 18, 2015 10:39 am 
Offline
Forum Hot Lapper
Forum Hot Lapper

Joined: Thu Jan 22, 2015 1:45 pm
Posts: 70
Had the first NP01 engine on the dyno yesterday! Just wanted to get the new ecu hooked up and generate a base map. AEM flew a tech in (Henry) to support the effort and make sure all was working as planned. Put about an hour's run time on the engine, generated a base map and confirmed all the control options were working. We pulled the engine this morning to check things over, verify cam timing and a few other things and will get down to development next week. It was great to actually have the first one running!

Image


Top
 Profile  
 
PostPosted: Wed Feb 18, 2015 4:49 pm 
Offline
Forum Hot Lapper
Forum Hot Lapper

Joined: Thu Jan 22, 2015 1:45 pm
Posts: 70
Hi Phil,
If you look closely at the 90% person model above, you'll notice that the feet are elevated above the floor. The person model we used above was from a previous formula car program, which is correct in scale and the torso, but the legs and feet are a bit too high. It will depend on your inseam and how upright you prefer to sit. At PRI we had a 6'7" person in the car comfortably and I'll try to find the photos of him so you can see how he fit. My guess is you'd be OK with your knees and the cross bar, but might want to bring the wheel a bit closer to you to gain a little room around it to avoid the shuffle.


Top
 Profile  
 
PostPosted: Mon Mar 09, 2015 12:12 pm 
Offline
Forum Hot Lapper
Forum Hot Lapper

Joined: Thu Jan 22, 2015 1:45 pm
Posts: 70
We've accomplished quite a bit in the last couple weeks. Engine development is almost done with a positive result on the plus side of the planned target of 185HP. There is a video of the engine running here:
https://www.youtube.com/watch?v=kPww6H8LonI

The body tools will begin machining this week and it's looking great. We've narrowed the roof a little and made a subtle change to the nose to clear the rocker/shock assembly. We may also have landed on a great and trouble free way of hinging the doors plus finalized a very cool and effective splitter design. Here are a few pics of the body tooling which is what the actual molds will be pulled from. The two recesses in the bottom center of the nose accommodate to ducts to bring air the the cockpit. Notice the sizable ramps on the bottom of the splitter. These should generate some real downforce.
Image
Image


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 175 posts ]  Go to page 1, 2, 3, 4, 5 ... 18  Next

All times are UTC - 8 hours


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Group