{"id":602,"date":"2016-07-19T16:14:22","date_gmt":"2016-07-19T23:14:22","guid":{"rendered":"http:\/\/tghaviation.com\/aircraft-instrument-services\/?p=602"},"modified":"2025-06-25T11:04:30","modified_gmt":"2025-06-25T18:04:30","slug":"pitot-static-system-airspeed-calculation","status":"publish","type":"post","link":"https:\/\/tghaviation.com\/aircraft-instrument-services\/pitot-static-system-airspeed-calculation\/","title":{"rendered":"Pitot Static System…Airspeed Calculation"},"content":{"rendered":"

Pitot Static System Airspeed Calculation<\/p>\n

A. \u00a0Airspeed Calculation:<\/p>\n

Airspeed is calculated as a function of the difference between Pitot Pressure and Static Pressure as follows:<\/p>\n

Calculated or Indicated airspeed is indicated airspeed corrected for instrument errors, position error (due to incorrect pressure at the static port) and installation errors.<\/p>\n

Calibrated airspeed values less than the speed of sound at standard sea level (661.4788 knots) are calculated as follows:<\/p>\n

 <\/p>\n

\"pitot<\/a>minus position and installation error correction.<\/p>\n

 <\/p>\n

Where<\/span><\/p>\n


\n\"Vc\"<\/a>\u00a0is the calibrated airspeed,<\/p>\n

 <\/p>\n

\"qc\"is the impact pressure (inches Hg) sensed by the pitot tube,<\/p>\n

 <\/p>\n

\"P0\"is 29.92126 inches Hg; static air pressure at standard sea level,<\/p>\n

 <\/p>\n

\"a0\"<\/a>is 661.4788 knots:, speed of sound at standard sea level<\/p>\n

 <\/p>\n

Units other than knots and inches of mercury can be used, if used consistently.<\/p>\n

This expression is based on the form of Bernoulli\u2019s equation applicable to a perfect, incompressible gas. The values for\"P0\"and \u00a0\u00a0\"A0_small\"<\/a>are consistent with the ISA i.e. the conditions under which airspeed indicators are calibrated.<\/p>\n

Keep in mind that this is for your basic vanilla airspeed indicator<\/strong> and does not include calculations for TRUE<\/strong> Airspeed for which you must include the variables of True Temperature and True Altitude.<\/p>\n

 <\/p>\n

Stay tuned for upcoming Blogs<\/strong><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Pitot Static System Airspeed Calculation A. \u00a0Airspeed Calculation: Airspeed is calculated as a function of the difference between Pitot Pressure and Static Pressure as follows: Calculated or Indicated airspeed is indicated airspeed corrected for instrument errors, position error (due to incorrect pressure at the static port) and installation errors. Calibrated airspeed values less than the … Continue reading Pitot Static System…Airspeed Calculation<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[9],"tags":[14,62,12,44,119,122,111,112,13,20,117,109,114,120,115,116,108,110,118,121,113],"class_list":["post-602","post","type-post","status-publish","format-standard","hentry","category-tgh-aviation-blog","tag-aircraft","tag-airspeed","tag-altimeter","tag-altitude","tag-cabin-pressurization","tag-instrument-flight","tag-machmeter","tag-multiple-pressure","tag-pilot","tag-pitot-static","tag-pitot-static-check","tag-pitot-tube","tag-position-errors","tag-pressure-diaphragm","tag-ram-air-pressure","tag-stagnation-pressure","tag-static-port","tag-static-system","tag-transponder-check","tag-variometer","tag-vertical-speed-indicator"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t