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Robert Ritter von Greim
Robert Ritter von Greim, born Robert Greim, was a German officer and World War I fighter ace with 28 victories who became the Luftwaffe's last commander-in-chief in 1945.
Robert Rosenthal (USAAF officer)
Robert Rosenthal was an American B-17 pilot who flew 52 combat missions with the Eighth Air Force in World War II, surviving two shoot-downs, and later joined the Nuremberg prosecutions.
Robert W. MacCormack
Robert W. MacCormack is Professor of Aeronautics and Astronautics, Emeritus, at Stanford University, elected to the National Academy of Engineering in 1992 for work on numerical solutions of the Navier-Stokes equations.
Robin Olds
Robin Olds was a United States Air Force fighter pilot and general who scored 16 aerial victories across World War II and Vietnam, a triple ace.
Robinson Helicopter Company
Robinson Helicopter Company, founded by Frank Robinson in California in 1973, makes the two-seat R22, four-seat R44, and turbine R66, making helicopter flight training and ownership affordable.
Robinson R22
The Robinson R22 is a two-seat, single-engine piston light helicopter made by Robinson Helicopter of Torrance, California, first flown in 1975 and the standard civilian helicopter trainer worldwide.
Robinson R44
The Robinson R44 is a four-seat, piston-engine light helicopter built by Robinson Helicopter Company of Torrance, California, first delivered in 1993 and among the best-selling civil helicopters.
Robinson R66
The Robinson R66 is a five-seat, single-engine light turbine helicopter built by Robinson Helicopter Company of Torrance, California. Its first turbine model, it received FAA certification in 2010 and uses a Rolls-Royce RR300 engine.
Robinson R88
The Robinson R88 is a ten-place, single-engine turbine utility helicopter developed by Robinson Helicopter Company of Torrance, California, unveiled in March 2025 as the company's largest model.
Rocket mail
Rocket mail, or missile mail, is the transport of letters and parcels by rocket, tried only in experiments, most notably Austria in 1931 and the United States in 1959.
Rocket-powered aircraft
A rocket-powered aircraft, or rocket plane, is an airplane propelled by a rocket engine, from the World War II Me 163 Komet to the X-15 and modern spaceplanes.
Rockwell B-1 Lancer
The Rockwell B-1 Lancer, or B-1 bomber, is a supersonic swing-wing heavy bomber of the United States Air Force, operational since 1986 with its nuclear mission ended in 1992.
Rockwell X-30
The Rockwell X-30 was a planned American experimental aircraft, part of the National Aero-Space Plane program, intended to reach orbit using scramjet engines; Congress canceled it in 1994.
Rogallo wing
The Rogallo wing, also called the Parawing, is a flexible fabric wing invented by Francis and Gertrude Rogallo in 1948 that became the basis of hang gliding.
Rohrbach Roland
The Rohrbach Roland (Ro VIII) is a German three-engine, all-metal passenger aircraft that began flying for Luft Hansa in 1926 and set 22 world records.
Roland Garros (aviator)
Roland Garros (1888–1918) was a French aviator from Réunion who made the first airplane crossing of the Mediterranean in 1913, later shooting down a German aircraft with a forward-firing gun.
Rolls-Royce BR700
The Rolls-Royce BR700 is a family of high-bypass turbofan engines of 14,000 to 21,500 lb thrust, built at Dahlewitz, Germany, powering the Gulfstream G650, Bombardier Global jets, and the Boeing 717.
Rolls-Royce Griffon
The Rolls-Royce Griffon, also known as the Griffon engine, was a British 37-liter liquid-cooled V-12 aero engine that powered late-war Spitfires and the Avro Shackleton.
Rolls-Royce Holdings
Rolls-Royce Holdings is a British aerospace and defense company headquartered in London, known for large civil turbofan engines and nuclear reactors for Royal Navy submarines.
Rolls-Royce Limited
Rolls-Royce Limited was a British engineering company, founded in Manchester in 1906 by Henry Royce and Charles Rolls, famous for the Silver Ghost car and the Merlin aero engine.
Rolls-Royce Merlin
The Rolls-Royce Merlin, originally the private-venture PV.12, is a British 27-liter liquid-cooled V-12 aero engine of 1933 that powered the Spitfire, Hurricane, Lancaster, and P-51 Mustang.
Rolls-Royce Pearl
The Rolls-Royce Pearl is a family of turbofan engines for business jets, exclusively powering the Bombardier Global 5500 and 6500, Gulfstream G700 and G800, and Dassault Falcon 10X.
Rolls-Royce R
The Rolls-Royce R was a British 37-liter supercharged V-12 aero engine built for air racing, powering the Supermarine S.6B to the Schneider Trophy in 1931 and a 407.5 mph world seaplane speed record.
Rolls-Royce RB211
The Rolls-Royce RB211 is a three-shaft high-bypass turbofan family developed as the sole engine for the Lockheed L-1011 TriStar; its overruns bankrupted Rolls-Royce in 1971.
Rolls-Royce Spey
The Rolls-Royce Spey is a British twin-spool turbofan, in the RB.163 and RB.168 series, that entered airline and military service in 1964 and powered the Trident, One-Eleven, and British Phantoms.
Rolls-Royce Trent
The Rolls-Royce Trent (RR Trent) is a family of three-shaft high-bypass turbofan engines for widebody aircraft, descended from the RB211, with the first Trent 700 entering service in 1995.
Rolls-Royce Trent 1000
The Rolls-Royce Trent 1000 is a three-shaft high-bypass turbofan developed by Rolls-Royce as the launch engine for every Boeing 787 Dreamliner variant, entering service in 2011.
Rolls-Royce Trent 900
The Rolls-Royce Trent 900 is a three-shaft, high-bypass turbofan engine built by Rolls-Royce to power the Airbus A380, where it competes with the Engine Alliance GP7000.
Rolls-Royce Trent XWB
The Rolls-Royce Trent XWB, also known as the Trent XWB, is a three-shaft high-bypass turbofan and the sole engine for the Airbus A350 family, in service since 2015.
Rolls-Royce UltraFan
The Rolls-Royce UltraFan is a geared turbofan aero-engine technology program whose full-scale demonstrator first ran in Derby in 2023, reaching a record 85,000 lb of thrust on 100% sustainable aviation fuel.