Highlights in this issue include a dossier on the Prodrive World RX I4 Turbo, Race Engine Retro and the challenge of Formula E. Insights into valve seats and Jesel's Equal Eight as well as focus articles covering CAD, sensors and data acquisition. 

Highlights in this issue include a conversation with FLIR's Tom Frost, dossiers on the Tecdron TC-800 FF and the Robby Moto UAVE as well as a look at the Teledyne SeaRaptor. An insight into USV's and we look at the Singular Aircraft FlyOx. Show reports from AUVSI Xponential 2019 & Ocean Business 2019 as well as focus articles covering propellers, simulation and testing.

This issue contains an insight into supercapacitors and a show report from Electric & Hybrid Vehicle Europe 19. Dossiers on the John Deere 944K Hybrid Loader and the Protean PD18. We look at the E-Kotug as well as focus articles covering axial flux motors and cable.

Highlights in this issue include a conversation with Norio Aoki from Toyota Gazoo Racing and a report on 24-Hour Prototype Engines 2019. A dossier on the Mercury Racing 2.5 EFI F-1 H20 v6 and we look into ECR Engines Cadillac DPi-V.R. A report from the European Automotive Testing Expo 2019 as well as focus articles covering lubricants, component and materials testing. 

Highlights in this issue include a conversation with Aprilia's Romano Albesiano, Electric Avenue & Challenge Of The British Hill Climb Championship. A dossier on the Noonan NHRA Pro Mod 4.9 Hemi, we also look at the 4Piston Super 99 as well as focus articles covering transient dynamometers & exhausts. 

Highlights in this issue include a cover story on Reference Technologies' Hummingbird XRP along with focus articles on Gimbals and Performance Monitoring. Nick Colosimo of BAE Systems gives his thoughts on the future of UAVs, we report back from AUVSI Xponential, have a dossier on O'Neill Power Systems NorEaster, we have an insight into UAVs and look at the Kratos Defense ATMA.

Highlights in this issue include a conversation with MagDev's technical director David Richards, as well as a look at the Tropos Motors ABLE-XR. A dossier on the Lightning Strike Motorcycle and a deep insight into hydrogen-powered vehicles. We look at the Solaris Urbino 18 electric in operation, as well as focus articles covering insulation and inverters.

Highlights in this issue include a conversation with Renault F1's technical director Remi Taffin and the challenge of F1H20 World Championship. A report from the British Grand Prix 2019 and Engine Expo 2019, as well as a dossier on the Outkast Racing Engines RY45 Late Model v8. We investigate the Team Bath Formula Student KTM Turbo, the EDL Judd DB and the Suzuki NHRA Pro Stock motorcycle. As well as a focus article covering transmissions.

Highlights in this issue include conversations with ASVs Geoff Douglass and SkySkopes Matt Dunleavy, dossiers on the ecoSUB Robotics AUVs and the Apple Tree Innovation WAM-167BB. We look at the AMZ Driverless gotthard and the Aerdron HL4 Herculift as well as an insight into unmanned space vehicles. A show report from InterDrone 2019 as well as focus articles on engine control units and video systems.

Highlights in this issue include a conversation with HPD’s Mark Crawford as well as an update on the Yamaha MotoGP I4. A dossier on the Bolt HRC-4 I4 Turbo, the challenge of Moto3 with KTM and we look at Hybrids in the WRC. Focus articles on component lifting, valves and piston rings, we also detail the Race Engine of the Year 2019 Nominations. E-Race Power Technology contains a conversation with Mercedes-Benz’s Ian James as well as looking at the Lightning Motorcycles LS-218.

Highlights in this issue include a conversation with Drone Evolution's technical director John Young as well as dossiers on the Phoenix UAS and the Adelan solid oxide fuel cell. An insight into construction and we look at the Supacat hybrid ATMP. Reports from InterGeo 2019, DSEI 2019 and our tour of Oregon. We look at the Copperstone Helix as well as focus articles covering sonar systems and power management systems.

Highlights in this issue include a conversation with DS Techeetah's team principal and the challenge of Aquabike. A dossier on the M-sport Ford Fiesta R5 I4 Turbo as well as an insight into Toyota Racing Development USA. The results of Race Engine of the Year 2019, reports from Testing Expo North America and PMWE 2019 as well as focus articles covering computer aided manufacturing (CAM), turbo's and superchargers.

Highlights in this issue include a dossier on the Dynium Robot electric tractor and an insight into fast chargers. We look at the Lion8 refuse truck and a report from The Battery Show 2019. We also have focus articles covering radial flux motors, onboard chargers and lightweight materials.

Highlights in this issue include a conversation with Jonathan Bailey the man responsible for unmanned systems at Thales UK. We have dossiers on the Cellula Robotics Solus-LR UUV with its hydrogen fuel cell powertrain and the ARE series hybrid single-cylinder engine. Our focus articles look at the subjects of thermal imaging cameras and lidar sense and avoid. Our insight takes us into the world of UUVs and we report back from the Commercial UAV Show in London as well as the Commercial UAV Expo in Las Vegas.  We examine the RISE logistics system for BLOS autonomous deliveries and the Global Unmanned Spray System (GUSS) for orchard and vineyard spraying.  All this and more...

For four heady years of competition between up to four manufacturers, the World Endurance Championship lived the true spirit of technical innovation within the quest for fuel efficiency, more so even than contemporary Formula One. For the last three of those four years - 2015 through 2017 - Porsche - after a learning year returning to Prototype racing in 2014 - won Le Mans and the Manufacturers’ title in the World Endurance Championship each season. 

Porsche’s 900 bhp power unit for its 2014-2017 919 LM P1 car demonstrated what is possible when the quest is to maximise performance from a given amount of fuel within the context of a hybridised power unit and without the shackles current rules impose upon the Formula One power plant. This is a World title winning hybrid powertrain that is not a refinement within a template imposed by rule makers but one optimally designed as fit for purpose.

RET 124 presents in depth the story of this remarkable power unit that went on allow a ‘formula libre’ version of the Porsche 919 to set new lap time benchmarks at Spa Francorchamps and the Nurburgring Nordschleife in 2018. It is an unrivalled investigation into the state of the art in fuel flow limited racing. Don’t miss what will be one of the most exclusive and talked about issues of RET of recent times!

Other highlights in this issue include a look at the challenge of GTE racing, focuses on vibration analysis and friction reduction.  We report back from PRI 2019 and have the latest edition of our E-Race Power Expo feature.

Highlights in this issue include the second part of our Porsche 919 exclusive, with this insight looking at the E-drive aspect of the Le Mans-winning powertrain. We have a dossier on the Aston Martin Cosworth V12 as well as an insight into the challenge of NHRA Pro Stock EFI. We report on heat shielding options for racecar powertrains as well as reviewing Autosport Engineering 2020. We have the latest instalment of our e-Race Power Expo and our focus articles cover engine inspection and surface treatments for AM components.

Highlights in this issue include a dossier on the BB Green ferry, a look into the challenge of power and torque density as well as focuses on magnetics and e-axles. We have a deep insight into welding, have the second installment of our report into The Battery Show and take a look at the operation of the Lightning Systems LCF truck.

Highlights in this issue include a conversation with Jennifer Andrews, Bell's project lead on a major NASA project. We have dossiers on the EasyMile EZ10 shuttle commuting platform and Turbotech TP-R90/TG-R55 powertrain. Our focus articles look at the subjects of engine ancillary systems and infotainment systems.  Our insight looks at UGVs and we have a show preview of the postponed Oceanology International show.  We digest the gasoline-electric Quaternium HYBRIX 2.1 quadcopter and the Clearpath Robotics Jackal UGV.  Finally we look at the operation of the Roboat USV designed to perform commercial and municipal duties.  All this and more...

Highlights in this issue include an interview with Kongsberg Maritime's marine robotics manager Bjorn Gjelstad. Our dossiers detail the UAV Works VALAQ tail-sitter and the Suter Industries TOA 288 naturally aspirated two-stroke boxer engine. The focus articles look at the subjects of cable harnesses and AI systems. Our insight looks at the latest uses of USVs and we have an update from a selection of exhibitors due to be displaying at the delayed AUVSI Xponential event. Our digests feature the MARIN modular AUV and the Vtrus Autonomy Brain Implant, which fits on a variety of vehicle platforms to provide navigation in GNSS-denied environments. And also we explore the operation of the Vitirover UGV, plus we provide details of our newly launched Unmanned Systems Engineering Network.

Highlights in this issue include an interview with Volansi's CTO Daniel Buchmueller and an investigation of how Seafloor Systems mapped-out the 450-mile California Aqueduct. Our dossiers detail the SubSeaSail Gen6 USSV semi-submersible that has almost unlimited endurance and Strange Development's REVolution supercharged two-stroke engine with rotary exhaust valve. The focus articles dive into the subjects of servo actuators and radio telemetry. Our insight looks at the latest UAVs designed to carry heavy weight and we bring updates from a selection of exhibitors from the now virtual Farnborough Airshow. Our digest features the Transforma Robotics XDBOT designed for disinfecting hospitals and other buildings. We explore the operation of the UAV Factory Penguin C having recently been adapted to monitor the fallout from disasters at nuclear powerplants. Plus much more...

Highlights in this issue include a dossier on the Elaphe L1500 in-wheel motor, a conversation with Henrik Fisker the founder of Fisker Inc and a digest on the vRbikes vR3 tricycle. We have focuses on fuel cells, measuring equipment and ECUs. We have a deep insight into EMI and much more...

Highlights in this issue include a dossier on the Mummert PST Suzuki GS1100E I4 Nitrous engine and a conversation with Williams Advanced Engineering's chief motorsport engineer, Doug Campling. We have insights into KTM's RC16 MotoGP development and we look at tuning the JFR Funny Car engine with crew chief Jimmy Prock.  We look into the challenge of R5 rallying with Skoda's Fabia R5 and R5 Evo. We have the latest instalment of our e-Race Power Expo and our focus articles cover con rods and valve springs.

Highlights in this issue include an interview with Animal Dynamics' co-founder Adrian Thomas and an investigation into the operation of SeaMachines/MSRC oil-spill skimmer USV. Our dossiers detail the 2getthere 3rd-gen shuttle that is already operating at SAE Level 4 and set to operate in mixed traffic and the Woelfle Aixro family of Wankel rotaries for UAVs. The focus articles dive into the subjects of solar cells and real-time operating systems. Our insight looks at the latest in autonomy for space vehicles and we bring updates from a selection of exhibitors from this years virtual Commercial UAV Expo. Our digest features the VTOL-transitioning tail-sitting Bell APT UAV created for ferrying life-saving supplies. We explore the operation of the Quantum-Systems Covid-19 samples courier that is ensuring swift and safe delivery of virus samples for lab testing. Plus much more...

Highlights in this issue include a dossier on the Tony Stewart Racing Ford FPS 410 Sprint Car V8 and Rob Flynn reveals the art and science of Top Fuel engine engineering. We have insights into the 24-Hour Prototype engines of 2020 and look at the technology that would have been on show at this year's PMW Expo. We look into the challenge of electric drag racing as well as having focus articles on additive manufacturing of engine parts and the cleaning of engine components. We have the latest instalments of our e-Race Power Expo and Race Engine Retro features and much more...

Highlights in this issue include a dossier on the Liebherr ETM Series all-electric cement mixer, a conversation with Thierry Caussat the CTO of VIA Motors and a digest on the Workhorse Group C-Series delivery trucks. We have focuses on battery materials, thermal management and DC-DC converters. We have a deep insight into battery testing and much more...

Highlights in this issue include an interview with AlarisPro's CEO Anthony Pucciarella and an investigation into the operation of the Kalmar AutoStrad for handling shipping containers at cargo terminals. Our dossiers detail the Wings For Aid MiniFreighter UAS for delivering humanitarian aid and the Teledyne EDR fuel cell. The focus articles dive into the subjects of motor controllers and image sensors. Our insight looks at the emergency services use of unmanned systems and we bring updates from a selection of exhibitors from this years virtual AUVSI Xponential and Intergeo shows. Our digest features the Stone Aerospace Sunfish AUV, plus much more...

Highlights in this issue include a dossier on the Glickenhaus by Pipo Moteurs P21 for Le Mans Hypercar and Larry 'Spiderman' McBride reveals some secrets to his success. We have insights into the confusion over 'synthetic' motorcycle engine oils and look at the technology that would have been on show at this year's PRI show. We look into the challenge of air-cooled two-stroke karting as well as having focus articles on fasteners and non-destructive testing. We have the latest instalment of our e-Race Power Expo feature and much more...

Highlights in this issue include a dossier on the Vance & Hines XG750R vee twin Harley-Davidson for AMA Pro Racing and we talk to Richard 'Dick' Langford about his career. We look at the challenge of World of Outlaws with Ron Shaver and his Ford FPS 410 engines and look at the technology that would have been on show at this year's UK trade show. Our focus articles explore hardware-in-the-loop simulation and new materials for race engine powertrains. We have the latest instalments of our e-Race Power Expo and Race Engine Retro features and much more...

Highlights in this issue include an interview with Orbital UAV's CTO Geoff Cathcart and a closer look at the Aurrigo shuttle that kept the Wales Open golf tournament in operation. Our dossiers detail the Saab Sabertooth AUV acting as a permanent janitor for deep-sea infrastructure and the Hirth 3507-01M two-stroke engine. The focus articles dive into the subjects of IMUs and additive manufacturing. Our insight looks at UUVs and we report on the virtual Oceanology International show. Our digest features the hydrogen fuel-celled, VTOL-transitioning, Zepher Flight Labs Z1 UAV plus much more...

Highlights in this issue include a dossier on the Energica Eva Ribelle e-bike, a conversation with Dr Pat Anderson the CTO of VerdeGo Aero and a digest on the VIA Motors CHEMA skateboard. We have focuses on power electronics, condition monitoring and battery cooling. We have a deep insight into vehicle-to-grid (V2G) charging, take a look at the Tesla Octovalve and much more...

Highlights in this issue include a dossier on the Gibson GL458 B-Spec and we talk to David Dicker of Rodin Cars about his plans for high-performance road and race single-seaters. We look at the challenge of classic rallying, the advantages of capacitor discharge ignition systems for drag ignition and the Nissan SR20 compund turbo project headed by Shane Tecklenburg. Our focus articles explore QC & QA and CNC hardware. We have the latest instalments of our e-Race Power Expo and Race Engine Retro features and much more...

Highlights in this issue include an interview with Volocopter's CTO Dr Arnaud Coville and we look into the operation of Icarus' swarming control architecture. Our dossiers detail the SAE Level 4 autonomous Einride next-gen Pod and the Vanguard EFI/ETC vee twins. The focus articles dive into the subjects of battery technology and transponders. Our insight looks at UGVs and we report on the IDEX 2021 show. Our digest looks at the fifth version of the EvoLogics Sonobot hydrographic survey USV plus much more...

Highlights in this issue include a dossier on the world's second-fastest street-legal doorslammer, the Sorceress 10.5 litre V8 twin turbo and we talk to Chris Gilbert of Init Racing about the challenge of keeping classic engines racing. We look at the challenge of Pro Mod and John Coxon reports on nanotechnology in engine oils. Our focus articles explore crankshafts for retro engines and the latest in castings. We have the latest instalment of our e-Race Power Expo feature and much more...

Highlights in this issue include a dossier on the Irizar Group ie truck, a conversation with Andrew Cross the CTO of Integral Powertrain and a digest on the Riversimple Rasa. We have a focus on Battery safety alongside an insight into NVH. We have a deep insight into Wireless charging, take a look at Skateboard platforms and much more...

Highlights in this issue include an interview with VITEC's senior product manager Richard Bernard and we look into the operation of Blue White's robotics platform. Our dossiers detail the Skyeton Raybird-3 and Spectronik PEM fuel cells. The focus articles dive into the subjects of data storage and antennas. Our insight looks at USVs and we report on the AUVSI Xponential 2021 virtual show. Our digest looks at the Sea-Kit X-Class plus much more...

Highlights in this issue include a dossier on the AER P60C and we talk to David Mountain of Mountune about the challenges facing the recently restructured company. We look at the challenge of Formula E and investigate the Noonan 4.6 Litre Small Block Hemi. Our focus articles explore diesel race engine components as well as EV powertrain and battery testing. We have the latest instalments of our e-Race Power Expo and Race Engine Retro features alongside an update on the Red Victor III and much more...

Highlights in this issue include a dossier on the Sixteen Power v16 and we talk to Honda Performance Development's president and technical director David Salters. We look at the challenge of Tractor Pulling as well as ProCharger-powered cars and the NHRA. Our focus articles explore sustainable fuels and oils, EV control units for racing and timing belt drives. We have the latest instalments of our e-Race Power Expo and much more...

Highlights in this issue include a conversation with the CEO of Robot Aviation Niklas Nyroth and we look into the operation of the Exotec Skypod. Our dossiers detail the Maritime Robotics Mariner and the HFE International GenPod. The focus articles dive into the subjects of simulation tools and autopilots. Our insight looks at UAV's and our digest articles feature the MRS MR-10, MR-20 and the Aquaai Mazu plus much more...

Highlights in this issue include a dossier on the Sigma Powertrain EMAX transmission and a conversation with EPropelled’s head of EV strategy David Hudson. We have a digest on the Everrati Porsche 911 alongside a deep insight into switching.  Reports from the Battery Show North America 2021 and Cenex-LCV 2021 as well as focus articles covering 48 v systems and motor laminations plus much more...

Highlights in this issue include a dossier on the Init Racing Mercedes M119 v8 twin turbo and we talk to Bill Miller about his views on the latest developments in ignition systems for top-level drag racing. We look at the challenge of Land Speed Racing as well as Nostalgia Nitro Funny Cars. Our focus articles explore engine sealing, heads and blocks. We have the latest instalment of e-Race Power Expo, our report on the 24 Hour Prototype engines 2021 and much more...

Highlights in this issue include a conversation with The Aurora Engineering Partnership’s managing director Simon Galt and we look into the operation of the FlyingBasket FB3. Our dossier details the ANYbotics ANYmal D and our insight looks at space vehicles.  The focus articles dive into the subjects AI systems and ground control stations. Our digest articles feature the  Aquatic Drones Phoenix 5 and the Sky Eye Systems Rapier X-25 alongside a show report from AUVSI Xponential 2021 plus much more...

Highlights in this issue include a dossier on the Moran Racing Engines Pro Mod v8 alongside a retro dossier on the Alp Racing & Design Vincent V2 LSR. We talk to Shell’s motorsport delivery manager Valeria Loreti and we have an insight into electric rallying. Our Race Engine Digest looks at the Polimotor 1 and we investigate the AJPE 481-X. Our focus articles explore wiring and connectors alongside pushrods, rockers and lifters and the nominees for the Race Engine Power Unit of the Year are revealed plus much more...

Highlights in this issue include a conversation with GE Aviation’s principal engineer Janek Biskupski and we investigate the operation of the Hefring Engineering OceanScout. Our dossiers detail the PteroDynamics x-P4 and the NWFC-1500 fuel cell. Our digest article features the 4Front Robotics Cricket and we have an insight into autonomous transport. Our focus articles cover composites as well as sense and avoid systems, we also have show reports from DroneX and DSEI 2021 plus much more...

Highlights in this issue include a dossier on the Audi RF TFSI DTM and we reveal the results of the Race Engine Power Unit of the Year 2021. We investigate NHRA Top Fuel Performance in 2021 alongside screw superchargers in Pro Mod. Our focus articles cover reverse engineering and oil pumps. We have the latest instalments of E-Race Power Expo and Race Engine Retro as well as a show report from PMWE 21 plus much more…

Highlights in this issue include a conversation with the technical and operations VP of Stratospheric Platforms Kevin Bean and we investigate the operation of the Priva Kompano. Our dossiers detail the Mayflower Autonomous Ship and the Flygas Engineering GAS418S. Our digest article features the ElevonX Sierra VTOL and we have an insight into UUVs. Our focus articles cover embedded computing and electric motors, we also have a show report from Ocean Business 2021 plus much more...

Highlights in this issue include a dossier on the Candela C-7 speedboat, a conversation with Robert Hoevers the CEO of Squad Mobility and a digest on the ZeroAvia hydrogen-electric aircraft. We have focuses on sealing and battery recycling alongside an insight into vehicle dynamics. We have a deep insight into motor materials, take a look towards a 1000-mile range and much more...

Highlights in this issue include a dossier on the Lightyear One solar-powered car, a conversation with Allan Paterson the head of r&d at Britishvolt and a digest on the Ricardo Tees Valley hydrogen bus. We have focuses on solid-state batteries and solar power as well as a report on the Battery Show Europe 2021 and much more...

Highlights in this issue include a dossier on the Dodrill KB543 and our discussion with Matt and Angie Smith about their Pro Stock Motorcycle vee-twin. We digest the Ascaso A+5 and look at the challenge of drifting. Our focus articles cover diesel performance pistons and EV cooling components. We report back from PRI 2021 and look at Factory Experimental the new NHRA Factory X series plus much more…