VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics

  #1  
Old 09-10-2013, 12:52 PM
Don's Avatar
Don Don is offline
 
Join Date: Jan 2005
Location: Richmond, VA
Posts: 696
Default iPhone 5S

Apple just announced their new iPhone and I'm not promoting it or even commenting on the non-aviation (i.e. phone, camera, and apps) parts of it.

What struck me from an aviation perspective is that it had 64 bit architecture and a separate M7 chip that is a stand alone motion sensor. Their website says the M7 chip works as an accelerometer, gyroscope, and compass, which are functions the A7 processor would normally do. I've got to say my iPhone motion sensor never impressed me enough to rely on it on the ground but this sounds like a decent step forward in processing power. That got me to thinking if the hardware is robust enough to run a mini-EFIS app, the iPhone might be able to function as a backup in case your primary EFIS failed.

This is way outside my areas of expertise, so I may be impressed by the wrong stuff...but gosh it looked promising. Now if I could just get Apple to add a couple of pitot ports, maybe we could get some good AoA apps too.<g>
__________________
Don Alexander
Virginia
RV-9A 257SW Purchase Flying - O-320, Dynon D100
RV-9A 702DA (reserved) Finish Kit IOX-340
www.propjock.com
Reply With Quote
  #2  
Old 09-11-2013, 11:59 AM
pmccoy's Avatar
pmccoy pmccoy is offline
 
Join Date: Jan 2006
Location: Orange County CA
Posts: 646
Default

Quote:
What struck me from an aviation perspective is that it had 64 bit architecture and a separate M7 chip that is a stand alone motion sensor. Their website says the M7 chip works as an accelerometer, gyroscope, and compass, which are functions the A7 processor would normally do. I've got to say my iPhone motion sensor never impressed me enough to rely on it on the ground but this sounds like a decent step forward in processing power. That got me to thinking if the hardware is robust enough to run a mini-EFIS app, the iPhone might be able to function as a backup in case your primary EFIS failed.
Don, I agree it looks interesting. Lets hope they put the new chipset into a version of the iPad with a better screen for sunlight. I would buy it.
__________________
_____________
Peter McCoy
RV9A N35PM S/N:91335
First Flight: April 2013
Hobbs: 400 hours after Oshkosh 2017
www.myrv9.com
Reply With Quote
  #3  
Old 09-11-2013, 12:04 PM
rv7boy's Avatar
rv7boy rv7boy is offline
Forum Peruser
 
Join Date: Jan 2005
Location: Austinville, Alabama
Posts: 2,458
Default

Quote:
Originally Posted by Don View Post
... Now if I could just get Apple to add a couple of pitot ports, maybe we could get some good AoA apps too.<g>
What you need is an AOA sensor with Bluetooth capability...and some good AOA apps!
__________________
Don Hull
RV-7 Wings
KDCU Pryor Field
Pilots'n Paws Pilot
N79599/ADS-B In and Out...and I like it!

?Certainly, travel is more than the seeing of sights;
it is a change that goes on, deep and permanent, in the ideas of living." Miriam Beard

Last edited by rv7boy : 09-11-2013 at 08:06 PM.
Reply With Quote
  #4  
Old 09-11-2013, 12:11 PM
southtarnation's Avatar
southtarnation southtarnation is offline
 
Join Date: Oct 2008
Location: Punta Gorda, Fl
Posts: 325
Default

Quote:
Originally Posted by rv7boy View Post
What you need is an AOA sensor with Bluetooth capability!
Isnt that the Ilevil premise?
__________________
Jesse
'89 RV-4, N2626C - purchased flying
Converted to Fastback - Sliding Canopy - Tall Gear
Dynon Skyview w/ acc. & VP-x Sport
Catto 3-Blade (gen. 1)
Based: KPGD
Reply With Quote
  #5  
Old 09-11-2013, 03:51 PM
60av8tor 60av8tor is offline
 
Join Date: May 2012
Location: Harrisburg, Pa
Posts: 759
Default

Quote:
Originally Posted by southtarnation View Post
Isnt that the Ilevil premise?
Bluetooth AHRS data, not AoA.
__________________
Jon
RV-7A purchased flying - Sold 6/16
RV-10 empennage delivered 1/22/14 (325JT)

Build: http://hhav8or.blogspot.com/
Reply With Quote
  #6  
Old 09-12-2013, 08:27 AM
rv7boy's Avatar
rv7boy rv7boy is offline
Forum Peruser
 
Join Date: Jan 2005
Location: Austinville, Alabama
Posts: 2,458
Default iLevil doesn't measure AOA

Quote:
Originally Posted by southtarnation View Post
Isnt that the Ilevil premise?
The iLevil ties in to the aircraft's pitot-static system and thus produces info from Total pressure (Pitot port ) and Static Pressure (static port). It does NOT, based on my reading of their web page, generate Angle of Attack info.

What I was suggesting was an AOA sensor without tubing or lines, just a Bluetooth signal to the iPhone 5s that would, with the appropriate app, indicate an AOA and any other info the app would generate. The AOA sensor would have to be mounted where it could both obtain a good reading in the free stream of air (without interference from aircraft structures and protuberances) and also provide a good Bluetooth signal to the iPhone 5s in the cockpit. In a single engine propeller driven plane, most Pitot tubes are mounted under the wing outboard of the propwash. Experimentation would be required to verify a good Bluetooth signal could be obtained in the cockpit. Does the aluminum wing interfere with a Bluetooth signal only ten feet away? Testing would be required. Or perhaps the AOA could be mounted on the Vertical Stab.

Most of the AOA sensors generate AOA info from partial readings of Total and Static pressure calibrated to an Angle of Attack by measuring the angle at which the Total and Static Pressures flip-flop, or begin to. Trying not to get too technical here...

The Bluetooth comment was just an idea...

P.S. This post is not a knock on the iLevil, which appears to be a very nice little gizmo. It appears to provide a lot of useful information. I'm just trying to say my Bluetooth comment was an idea about a very simple little AOA sensor that could provide Bluetooth signals to the iPhone 5s. Maybe it would work, maybe not. It may be like my patent application that got nowhere. In 1987, I pursued a patent on an electronic carpenter's level; one that would beep. The patent search turned up about 40 previous patents on the same thing.
__________________
Don Hull
RV-7 Wings
KDCU Pryor Field
Pilots'n Paws Pilot
N79599/ADS-B In and Out...and I like it!

?Certainly, travel is more than the seeing of sights;
it is a change that goes on, deep and permanent, in the ideas of living." Miriam Beard

Last edited by rv7boy : 09-13-2013 at 01:09 PM.
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 05:24 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.