Ajujaht 2012-s osalejale tehti projekti ettepanek Kirde-Hiinas

SIPGRADE, üks aasta 2012 Ajujahil esitletud projektidest sai toetust edasisele arendamisele Anshan Laser Valleys (Liaoning, Kirde-Hiina), koos teiste kavandatavate projektidega metroloogia ja mõõtmise süsteemide vallas, mis põhinevad Zeeman kahekordse sageduse interferomeetrial.

Teine variant (tavapärane, kahekordse sagedusega laser) leiab kasutust rasketööstuse tööpinkide dünaamilisel kalibreerimisel, kui esimese kahe projekti hulka kuuluvad laseri ja kaamerate tarvis fotoelektrooniliste elementide arenemine, mida kasutatakse väikeste mehitamata õhusõidukitel.

Rajamisel on uus 700 m² ehitis, milles on spetsiaalne labor kõigi vajalike seadmetega. Temperatuuri testala saab olema Liaoning Institute of Technology poolt, samuti hulk teadlasi välja töötamaks FPGA (DSP) signaali konditsioneerimise ja töötlemise elektroonikat.

Ajujaht 2012 proposal developing in North East China

One of the projects presented in Ajujaht 2012 in Tallinn, received support for further development in Anshan Laser Valley (Liaoning, north East China), together with other proposed projects for metrology and measurement systems based on Zeeman double frequency interferometry.

Another variant (traditional, double frequency laser source) will be used for dynamic calibration of heavy duty machine tools, while other two projects include design of photoelectronic elements for laser target designators and cameras for use on small UAVs. 

A new 700 sqm facility, including laboratory and equipment and a temperature-controlled test area has been made available aside Liaoning Institute of Technology, which will involve selected researchers for the design of FPGA (DSP) signal conditioning electronics. 

Anti GPS spoofing device presented to Galileo Master EU Competition

We are planning the design of an anti-jamming systems for UAV and presented it to the Galileo Master 2012 competition. The idea comes analyzing the recent case of the UAV landed by jamming its navigation system. By putting noise [jamming] on the communications with the satellite (the UAV was far from its closest control station) , they probably forced the UAV into autopilot RTL mode (Return To Launch).At that time the UAV relies on GPS signals to get home. By spoofing the GPS, jammers were able to get the UAV to 'land on its own where they wanted it to, without having to crack the remote-control signals and/or satellite communications data link.'"
The idea is actually nothing special, it uses redundancy, i.e. uses more independent GPS sensors controlling each other on the same platform and then let just one of them being 'fooled' by the jamming, while the other maintain correct information and drive the UAV back home.
A compass and some accelerometers (or even a view of the sun and an RTC) are a lousy substitute for the accuracy of GPS; but they do provide a sanity check that could keep you going in approximately the right direction, at least enough to hard-land somewhere nominally friendly, if GPS cannot be trusted.

It's certain that the UAV had an inertial navigation system - the problem is, how do you know when to use it? The way they usually work is that the navigation system computes two solutions: a hybrid GPS/INS solution to use most of the time, and a backup inertial-only solution. The inertial-only solution doesn't get used by the flight computers unless GPS is out entirely or there's some other very obvious problem. If you spoofed a GPS signal with real coordinates and slowly guided it away, how could the nav system see there's something wrong?Inertial navigation systems need reference points to prevent huge drifts over time. This is especially a problem if the aircraft flies relatively straight at the same speed for a long time -- accelerometers won't be able to detect slight changes in course. GPS is used to provide the reference points to reduce the drift. If the GPS system is wrong, then the inertial navigation system is also going to be fooled.

RoadmapWe first will test a solution with legacy Ardupilot with Air Shield (pressure sensor), no thermopiles, and an ArduIMU V2 instead, connected to a Mediatek 10Hz GPS. This with be 'sacrificed' and will talk to the jamming system (jammer), trying to make sure he thinks he is in control and following its instructions.Another two GPS receivers, i.e. a uBlock (binary) and and EM-406 Sirf with different protocols would stay behind, protected from the jammer by a firewall, and fly the UAV back to a safe home position. The system is based on open-source data and limited, through Xbee telemetry, to 1.2 km. Next step will be performed on a remote system up to 40 km and finally on a satellite datalink.

www.chinauavtech.com

Feanor OÜ enters officially UAV business

Feanor OÜ enters officially UAV business in 2012 through a cooperation with Shenyang Aerospace in Shenyang, Liaoning province, Nort East China. Feanor will be responsible for design and integration of sensors into existing autopilot hardware and further development of APM 1 and APM 2 platforms based on Atmega2560 (GPS, altimeter, magnetometer and dataflash included), using Invensense 6DoF MPU-6000, autonomous take-off and landing. 

When using the internal sensor fusion processor of the MPU-6000, more than half of the Atmega2560 processing capacity is free for new advanced features. 

Update of standards for dial gauges and actual status - November 2011

IMPORTANT UPDATE RELEASE nr. 4 Thread gauges

Actual release (November 2011) includes:

• ISO Metric threads, DIN ISO 1502 (DIN 13)
• ISO Metric threads, ANSI B1.16M
• Metric ISO Trapezoidal threads, DIN 103
• Unified threads and thread gauges, ANSI/ASME B1.1 u. B1.2
• Thread gauges for Unified threads, BS 919 (Part 1)
• Gauges for pipe threads, DIN ISO 228
• Steel conduit threads, DIN 40430, 40431
• Knuckle threads, DIN 405
• Buttress threads and  gauges,  DIN 513 /Factory standard
• Gauges for wire thread inserts for metric threads, DIN 8140
• Gauges for screw threads of Whitworth form, British standard BS 84 / BS 919 (Part 2)
• NPSM pipe threads,  ANSI/ASME 1.20.1
• Aerospace MJ threads, DIN ISO 5855
• Gauges for Metric and Unified thread inserts, Böllhoff factory standard
• Threads for valves and tyres,  DIN 7756 and ETRTO V.7
• Metric threads, NF E 03-152/153 (GE40-010N)
• Unified  threads, CNOMO GE40-008N (PSA, Renault)
• ACME threads, ANSI B1.5 - 1988
• Stub-ACME threads, ANSI B1.8 - 1988
• Buttress threads 7°/45°, ANSI B1.9 - 1973
• Hot-dip galvanized threads, DIN ISO 965:2002

Update of standards for spline gauges and actual status - November 2011

IMPORTANT UPDATE RELEASE nr. 7 spline gauges

Standards for spline gauges

Spline gauges are used for inspection of splined shafts and Involute and straight spline Shafts. Updated formulas include now following standards (November 2011):

DIN 5480 (March 2006)
DIN 5480 (September 1974)
DIN 5481:2005-06
DIN 5481 (January 1952)
DIN 5482 (March 1973)
ANSI B92.1-1996
ANSI B92.2M-1980

Update of standards for verniers and actual status - November 2011

IMPORTANT UPDATE RELEASE nr. 5 Verniers

No significant changes here.

• DIN 862 - 1988
• British Standard BS 887
• French Standard NF E-11-091

Update of standards for spline gauges and actual status - November 2011

IMPORTANT UPDATE RELEASE nr. 7 spline gauges

Standards for spline gauges

Spline gauges are used for inspection of splined shafts and Involute and straight spline Shafts. Updated formulas include now following standards (November 2011):

DIN 5480 (March 2006)
DIN 5480 (September 1974)
DIN 5481:2005-06
DIN 5481 (January 1952)
DIN 5482 (March 1973)
ANSI B92.1-1996
ANSI B92.2M-1980

Update of standards for thread gauges (plugs and rings) and actual status - November 2011

IMPORTANT UPDATE RELEASE nr. 6 Taper thread gauges

A threaded pipe is a pipe with screw-threaded ends for assembly. The threaded pipes used in some plumbing installations for the delivery of gases or fluids under pressure have a threaded section that is slightly conical (in contrast to the cylindrical section commonly found on bolts and leadscrews). The seal provided by a threaded pipe joint depends upon the labyrinth seal created by the threads; upon a positive seal between the threads created by the deformation of the threads when they are tightened to the proper torque; and sometimes on the presence of a sealing coating, such as thread seal tape ("Teflon tape"), or a liquid or paste pipe sealant such as pipe dope. Accurate threads are known as "dry fit" or "dry seal" meaning that no sealant is required for a gas-tight seal. Such threads are needed where the sealant would contaminate or react with the media inside the piping (i.e. oxygen).
Dryseal pipe threads gauges ASME B1.20.5 have been recently added.
Updated formulas include now following standards:

NPT American Standard Pipe Taper Thread
NPSC American Standard Straight Coupling Pipe Thread
NPTR American Standard Taper Railing Pipe Thread
NPSM American Standard Straight Mechanical Pipe Thread
NPSL American Standard Straight Locknut Pipe Thread
NPTF American Standard Pipe Thread Tapered (Dryseal)
BSPP British Standard Pipe Thread Parallel
BSPT British Standard Pipe Thread Tapered

Significative updates have been made here, especially or MJ threads, often referred to as “J” threads, mainly used in the aerospace industry, and dryseal thread B1.20.5, the full list at today (November 2011) of supported standards is:

Pipe threads for tubes and fittings BS21:1985
Pipe threads ANSI/ASME B1.20.1-1983 (NPT)
Pipe threads ISO 7/2 - 1982(E)
Pipe threads ISO 7/2:2000 (EN 10226:2005)
Pipe threads DIN 2999
Whitworth pipe threads DIN 3858/Factory standard
Pipe threads DIN 158
Gas valve threads DIN 477
Dryseal pipe threads ASME B1.20.5
Taper pipe threads JIS B 0253 -1985
ISO metric threads DIN ISO 965:1998
Trapezoidical threads DIN 103:1997
Thread tapes according to DIN 802
Unified threads ANSI/ASME B1.1-1989(R2001)/B1.2
Unified threads ANSI/ASME B1.1-2003 / ASME B1.2
UNJ Aerospace threads ISO 3161:1999 (ASME B1.15)
Pipe threads according to ISO 228:2000
Steel conduit threads DIN 40431:1972
Whitworth threads acc.BS 84:2007, BS 919-2:2007
Pipe threads according to DIN 259 (old)
Metrical HELICOIL threads BOELLHOFF standard
Knuckle threads according to DIN 405:1997
Unified threads ANSI B1.1-1989/BS 919-1:2007
Unified threads ANSI B1.1-2003/BS 919-1:2007
Buttress threads DIN 513/Factory standard
MJ threads DIN ISO 5855 : 2009
Bolt (external) screw thread for transition fits tol. zone (DIN 13, part 51)
Unified HELICOIL threads Boellhoff standard
Unified HELICOIL threads MS 33537-1994
NPSM Cyl.pipe threads ANSI/ASME B1.20.1-1983 (2001)
NPSF Cyl. Dryseal Pipe Threads ANSI B1.20.3-1976
Threads for valves DIN 7756 - February 1979
Threads for valves ETRTO V.7 - 1999
Gages for ISO metric threads ANSI B1.16-M
Gages for ISO metric threads BS919-3:2007
Metric M screw threads NF E 03-152/153
Unified threads French standard CNOMO GE40-008N
ACME screw threads ASME/ANSI B1.5-1997
Stub ACME screw threads ASME/ANSI B1.8-1988
Buttress Threads 7 deg. 45 deg. ANSI B1.9-1973
Metric thread inserts  DIN 8140:1999
Galvanized threads DIN ISO 965 (Parts 4,5):2002
Thread setting gauges DIN 2241
Threads for bicycles DIN 79012:1960
Thread gauges according to "VW Norm 13003"
Thread gauges according DIN 11 (old standard, still common)
Gas cylinder connections DIN 477 (Part 1)
Thread gauges according Swiss Standard NIHS 60-30
ACME threads with clearance for rail vehicles DIN 263:2000
Buttress threads DIN 20401:1984 / Factory standard
Cycle threads "BSC" BS 811:1950 / BS 919-2:2007

Update of standards for thread gauges (plugs and rings) and actual status - November 2011

IMPORTANT UPDATE RELEASE nr. 6 Taper thread gauges

A threaded pipe is a pipe with screw-threaded ends for assembly. The threaded pipes used in some plumbing installations for the delivery of gases or fluids under pressure have a threaded section that is slightly conical (in contrast to the cylindrical section commonly found on bolts and leadscrews). The seal provided by a threaded pipe joint depends upon the labyrinth seal created by the threads; upon a positive seal between the threads created by the deformation of the threads when they are tightened to the proper torque; and sometimes on the presence of a sealing coating, such as thread seal tape ("Teflon tape"), or a liquid or paste pipe sealant such as pipe dope. Accurate threads are known as "dry fit" or "dry seal" meaning that no sealant is required for a gas-tight seal. Such threads are needed where the sealant would contaminate or react with the media inside the piping (i.e. oxygen).
Dryseal pipe threads gauges ASME B1.20.5 have been recently added.
Updated formulas include now following standards:

NPT American Standard Pipe Taper Thread
NPSC American Standard Straight Coupling Pipe Thread
NPTR American Standard Taper Railing Pipe Thread
NPSM American Standard Straight Mechanical Pipe Thread
NPSL American Standard Straight Locknut Pipe Thread
NPTF American Standard Pipe Thread Tapered (Dryseal)
BSPP British Standard Pipe Thread Parallel
BSPT British Standard Pipe Thread Tapered

Significative updates have been made here, especially or MJ threads, often referred to as “J” threads, mainly used in the aerospace industry, and dryseal thread B1.20.5, the full list at today (November 2011) of supported standards is:

Pipe threads for tubes and fittings BS21:1985
Pipe threads ANSI/ASME B1.20.1-1983 (NPT)
Pipe threads ISO 7/2 - 1982(E)
Pipe threads ISO 7/2:2000 (EN 10226:2005)
Pipe threads DIN 2999
Whitworth pipe threads DIN 3858/Factory standard
Pipe threads DIN 158
Gas valve threads DIN 477
Dryseal pipe threads ASME B1.20.5
Taper pipe threads JIS B 0253 -1985
ISO metric threads DIN ISO 965:1998
Trapezoidical threads DIN 103:1997
Thread tapes according to DIN 802
Unified threads ANSI/ASME B1.1-1989(R2001)/B1.2
Unified threads ANSI/ASME B1.1-2003 / ASME B1.2
UNJ Aerospace threads ISO 3161:1999 (ASME B1.15)
Pipe threads according to ISO 228:2000
Steel conduit threads DIN 40431:1972
Whitworth threads acc.BS 84:2007, BS 919-2:2007
Pipe threads according to DIN 259 (old)
Metrical HELICOIL threads BOELLHOFF standard
Knuckle threads according to DIN 405:1997
Unified threads ANSI B1.1-1989/BS 919-1:2007
Unified threads ANSI B1.1-2003/BS 919-1:2007
Buttress threads DIN 513/Factory standard
MJ threads DIN ISO 5855 : 2009
Bolt (external) screw thread for transition fits tol. zone (DIN 13, part 51)
Unified HELICOIL threads Boellhoff standard
Unified HELICOIL threads MS 33537-1994
NPSM Cyl.pipe threads ANSI/ASME B1.20.1-1983 (2001)
NPSF Cyl. Dryseal Pipe Threads ANSI B1.20.3-1976
Threads for valves DIN 7756 - February 1979
Threads for valves ETRTO V.7 - 1999
Gages for ISO metric threads ANSI B1.16-M
Gages for ISO metric threads BS919-3:2007
Metric M screw threads NF E 03-152/153
Unified threads French standard CNOMO GE40-008N
ACME screw threads ASME/ANSI B1.5-1997
Stub ACME screw threads ASME/ANSI B1.8-1988
Buttress Threads 7 deg. 45 deg. ANSI B1.9-1973
Metric thread inserts  DIN 8140:1999
Galvanized threads DIN ISO 965 (Parts 4,5):2002
Thread setting gauges DIN 2241
Threads for bicycles DIN 79012:1960
Thread gauges according to "VW Norm 13003"
Thread gauges according DIN 11 (old standard, still common)
Gas cylinder connections DIN 477 (Part 1)
Thread gauges according Swiss Standard NIHS 60-30
ACME threads with clearance for rail vehicles DIN 263:2000
Buttress threads DIN 20401:1984 / Factory standard
Cycle threads "BSC" BS 811:1950 / BS 919-2:2007

Update of standards for spline gauges and actual status - November 2011

IMPORTANT UPDATE RELEASE nr. 7 spline gauges

Standards for spline gauges

Spline gauges are used for inspection of splined shafts and Involute and straight spline Shafts. Updated formulas include now following standards (November 2011):

DIN 5480 (March 2006)
DIN 5480 (September 1974)
DIN 5481:2005-06
DIN 5481 (January 1952)
DIN 5482 (March 1973)
ANSI B92.1-1996
ANSI B92.2M-1980