Glossary of aerospace engineering

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

Most of the terms listed in Wikipedia glossaries are already defined and explained within Wikipedia itself. However, glossaries like this one are useful for looking up, comparing and reviewing large numbers of terms together. You can help enhance this page by adding new terms or writing definitions for existing ones.

This glossary of aerospace engineering terms pertains specifically to aerospace engineering and its sub-disciplines. For a broad overview of engineering, see glossary of engineering.




A[edit]

B[edit]

  • Balloon — In aeronautics, a balloon is an unpowered aerostat, which remains aloft or floats due to its buoyancy. A balloon may be free, moving with the wind, or tethered to a fixed point. It is distinct from an airship, which is a powered aerostat that can propel itself through the air in a controlled manner.
  • Ballute — (a portmanteau of balloon and parachute) is a parachute-like braking device optimized for use at high altitudes and supersonic velocities. Invented by Goodyear in 1958, the original ballute was a cone-shaped balloon with a toroidal burble fence fitted around its widest point. A burble fence is an inflated structure intended to ensure flow separation.[25] This stabilizes the ballute as it decelerates through different flow regimes (from supersonic to subsonic).
  • Beam-powered propulsion — also known as directed energy propulsion, is a class of aircraft or spacecraft propulsion that uses energy beamed to the spacecraft from a remote power plant to provide energy. The beam is typically either a microwave or a laser beam and it is either pulsed or continuous. A continuous beam lends itself to thermal rockets, photonic thrusters and light sails, whereas a pulsed beam lends itself to ablative thrusters and pulse detonation engines.[26]
  • Bearing — In navigation, bearing is the horizontal angle between the direction of an object and another object, or between it and that of true north. Absolute bearing refers to the angle between the magnetic North (magnetic bearing) or true North (true bearing) and an object. For example, an object to the East would have an absolute bearing of 90 degrees. 'Relative bearing refers to the angle between the craft's forward direction, and the location of another object. For example, an object relative bearing of 0 degrees would be dead ahead; an object relative bearing 180 degrees would be behind.[27] Bearings can be measured in mils or degrees.
  • Bernoulli's principle — In fluid dynamics, Bernoulli's principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure or a decrease in the fluid's potential energy.[28](Ch.3)[29](§ 3.5)
  • Bi-elliptic transfer — is an orbital maneuver that moves a spacecraft from one orbit to another and may, in certain situations, require less delta-v than a Hohmann transfer maneuver. The bi-elliptic transfer consists of two half-elliptic orbits. From the initial orbit, a first burn expends delta-v to boost the spacecraft into the first transfer orbit with an apoapsis at some point away from the central body. At this point a second burn sends the spacecraft into the second elliptical orbit with periapsis at the radius of the final desired orbit, where a third burn is performed, injecting the spacecraft into the desired orbit.[30]
  • Big dumb booster — (BDB), is a general class of launch vehicle based on the premise that it is cheaper to operate large rockets of simple design than it is to operate smaller, more complex ones regardless of the lower payload efficiency.[31]
  • Bleed air — produced by gas turbine engines is compressed air that is taken from the compressor stage of those engines, which is upstream of the fuel-burning sections.
  • Booster — A booster rocket (or engine) is either the first stage of a multistage launch vehicle, or else a shorter-burning rocket used in parallel with longer-burning sustainer rockets to augment the space vehicle's takeoff thrust and payload capability.[32][33]
  • Boundary layer — In physics and fluid mechanics, a boundary layer is an important concept and refers to the layer of fluid in the immediate vicinity of a bounding surface where the effects of viscosity are significant. In the Earth's atmosphere, the atmospheric boundary layer is the air layer near the ground affected by diurnal heat, moisture or momentum transfer to or from the surface. On an aircraft wing the boundary layer is the part of the flow close to the wing, where viscous forces distort the surrounding non-viscous flow.
  • Buoyancy — In physics, buoyancy or upthrust, is an upward force exerted by a fluid that opposes the weight of an immersed object. In a column of fluid, pressure increases with depth as a result of the weight of the overlying fluid. Thus the pressure at the bottom of a column of fluid is greater than at the top of the column. Similarly, the pressure at the bottom of an object submerged in a fluid is greater than at the top of the object. This pressure difference results in a net upwards force on the object. The magnitude of that force exerted is proportional to that pressure difference, and (as explained by Archimedes' principle) is equivalent to the weight of the fluid that would otherwise occupy the volume of the object, i.e. the displaced fluid.


C[edit]

D[edit]

E[edit]

F[edit]

G[edit]

H[edit]

I[edit]

J[edit]

K[edit]

L[edit]

M[edit]

N[edit]

O[edit]

P[edit]

Q[edit]

R[edit]

S[edit]

T[edit]

U[edit]

V[edit]

W[edit]

X[edit]

Y[edit]

Z[edit]

See also[edit]

References[edit]

  1. ^ Radiotelephony Manual. UK Civil Aviation Authority. 28 May 2015. ISBN 9780 11792 893 0. CAP413.
  2. ^ Wyer, S.S., "A treatise on producer-gas and gas-producers", (1906) The Engineering and Mining Journal, London, p.23
  3. ^ Perry, R.H. and Green, D.W, (2007) Perry's Chemical Engineers' Handbook (8th Edition), Section 12, Psychrometry, Evaporative Cooling and Solids Drying McGraw-Hill, ISBN 978-0-07-151135-3
  4. ^ Crew, Henry (2008). The Principles of Mechanics. BiblioBazaar, LLC. p. 43. ISBN 978-0-559-36871-4.
  5. ^ Bondi, Hermann (1980). Relativity and Common Sense. Courier Dover Publications. p. 3. ISBN 978-0-486-24021-3.
  6. ^ Lehrman, Robert L. (1998). Physics the Easy Way. Barron's Educational Series. p. 27. ISBN 978-0-7641-0236-3.
  7. ^ a b "AOS, TCA, and LOS". Northern Lights Software Associates. Retrieved 17 November 2015.
  8. ^ McGraw Hill Encyclopaedia of Physics (2nd Edition), C.B. Parker, 1994, ISBN 0-07-051400-3
  9. ^ a b NRCC (2008). "Space Vision System Helps Astronauts See in Space". National Research Council of Canada. Archived from the original on June 3, 2008. Retrieved February 13, 2008.
  10. ^ Sousa, V. C. (2011). "Enhanced aeroelastic energy harvesting by exploiting combined nonlinearities: theory and experiment". Smart Materials and Structures. 20 (9).
  11. ^ Ellis, P. D. M. (1994). "Laser palatoplasty for snoring due to palatal flutter: a further report". Clinical Otolaryngology. 19 (4).
  12. ^ Encyclopedia of Aerospace Engineering. John Wiley & Sons, 2010. ISBN 978-0-470-75440-5.
  13. ^ "Aircraft - Define Aircraft at Dictionary.com". Dictionary.com. Archived from the original on 28 March 2015. Retrieved 1 April 2015.
  14. ^ "Different Kinds & Types of Aircraft". www.wingsoverkansas.com. Archived from the original on 21 November 2016.
  15. ^ "Definition of AIRSHIP". merriam-webster.com. Retrieved 4 October 2016.
  16. ^ "NASA aeronautics guided tour".
  17. ^ "Glossary: Anticyclone". National Weather Service. Archived from the original on June 29, 2011. Retrieved January 19, 2010.
  18. ^ "the definition of apsis". Dictionary.com.
  19. ^ John, R. R., Bennett, S., and Connors, J. P., "Arcjet Engine Performance: Experiment and Theory," AIAA Journal, Vol. 1, No. 11, Nov. 1963. http://arc.aiaa.org/doi/pdf/10.2514/3.2103
  20. ^ Wallner, Lewis E. and Czika, Joseph, Jr, ARC-Jet Thrustor for Space Propulsion, NASA Technical note TN D-2868, NASA Lewis Research Center, June 1965 (accessed September 8 2014)
  21. ^ Kermode, A.C. (1972), Mechanics of Flight, Chapter 3, (p.103, eighth edition), Pitman Publishing Limited, London ISBN 0-273-31623-0
  22. ^ "Asteroids". NASA – Jet Propulsion Laboratory. Retrieved 13 September 2010.
  23. ^ Federal Aviation Administration (2008). "Chapter 15: Navigation" (PDF). Pilot's Handbook of Aeronautical Knowledge (PDF). US Dept. of Transportation. ISBN 1-56027-783-1. Archived from the original (PDF) on 18 June 2015. Retrieved 14 September 2015.
  24. ^ Civil Aviation Safety Authority (2005). "Operational Notes on Non-Directional Beacons (NDB) and Associated Automatic Direction Finding (ADF)" (PDF). Government of Australia. Archived from the original (PDF) on 30 May 2009. Retrieved 11 February 2011.
  25. ^ https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19690017080_1969017080.pdf
  26. ^ Breakthrough (2018-05-29), Progress in beamed energy propulsion | Kevin Parkin, retrieved 2018-06-07
  27. ^ Rutstrum, Carl, The Wilderness Route Finder, University of Minnesota Press (2000), ISBN 0-8166-3661-3, p. 194
  28. ^ Clancy, L. J. (1975). Aerodynamics. Wiley. ISBN 978-0-470-15837-1.
  29. ^ Batchelor, G. K. (2000). An Introduction to Fluid Dynamics. Cambridge: University Press. ISBN 978-0-521-66396-0.
  30. ^ Curtis, Howard (2005). Orbital Mechanics for Engineering Students. Elsevier. p. 264. ISBN 0-7506-6169-0.
  31. ^ Schnitt, Arthur (1998) Minimum Cost Design for Space Operations.
  32. ^ "Rocket Staging". US: NASA. Retrieved October 12, 2018.
  33. ^ "Solid Rocket Boosters". US: NASA. Retrieved October 12, 2018.
  34. ^ Brain, Marshall (April 12, 2011). "How Airplane Cabin Pressurization Works". How Stuff Works. Archived from the original on January 15, 2013. Retrieved December 31, 2012.
  35. ^ "Cable Sewing Knots", Popular Mechanics, 7 (5): 550, May 1905, ISSN 0032-4558, Every lineman should know how to sew these knots.
  36. ^ Wragg, D.; Historical Dictionary of Aviation, History Press (2008), Page 79.
  37. ^ Clancy, L.; Aerodynamics, Halsted (1975), Page 293.
  38. ^ Crane, Dale (1997), Dictionary of Aeronautical Terms (3rd ed.), Aviation Supplies & Academics, p. 86, ISBN 978-1-56027-287-8.
  39. ^ Clancy, L.J. Aerodynamics, Section 11.6
  40. ^ E. Rathakrishnan (3 September 2013). Gas Dynamics. PHI Learning Pvt. Ltd. p. 278. ISBN 978-81-203-4839-4.
  41. ^ McCormick, Barnes W. (1979): Aerodynamics, Aeronautics, and Flight Mechanics. p. 24, John Wiley & Sons, Inc., New York, ISBN 0-471-03032-5
  42. ^ Clancy, L. J. (1975). Aerodynamics. New York: John Wiley & Sons. Sections 4.15 & 5.4.
  43. ^ Abbott, Ira H., and Doenhoff, Albert E. von: Theory of Wing Sections. Section 1.2
  44. ^ Young, Donald F.; Bruce R. Munson; Theodore H. Okiishi; Wade W. Huebsch (2010). A Brief Introduction to Fluid Mechanics (5 ed.). John Wiley & Sons. p. 95. ISBN 978-0-470-59679-1.
  45. ^ Graebel, W.P. (2001). Engineering Fluid Mechanics. Taylor & Francis. p. 16. ISBN 978-1-56032-733-2.