Equivalent airspeed definition

Equivalent airspeed means the calibrated airspeed of an aircraft corrected for adiabatic compressible flow for the particular altitude. Equivalent airspeed is equal to calibrated airspeed in standard atmosphere at sea level.
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Examples of Equivalent airspeed in a sentence

  • Equivalent airspeed is equal to calibrated airspeed in standard atmosphere at sea level.

  • Equivalent airspeed (EAS) equals CAS corrected for compressibility.

  • TAS): Equivalent airspeed corrected for error due to air density (Altitude and temperature dependent).

  • This means that our rocket vehicle very quickly goes supersonic when launched at very high altitude, the majority of the flight is supersonic.For example, at 100,000 feet above sea-level, equation 1.2 shows that the True airspeed is8.5 times the Equivalent airspeed, and not only that, but the speed of sound is lower at 100,000 feet (302 metres per sec) than it is at sea-level (340 metres per sec).

  • What would that airspeed be at higher altitude?Equivalent airspeed (EAS) performs the conversion: if the rocket flies at 10 Knots Equivalent airspeed at any altitude, then the rocket’s fins will behave the same as if they were flying at a True (actual) airspeed (TAS) of 10 Knots at sea-level: infact all the aerodynamic loads on the rocket (lift, drag, dynamic pressure or ‘hull’ pressure) will be the same whatever altitude the rocket is flying at if the Equivalent airspeed is the same.

  • Equivalent airspeed lets us predict the aerodynamics at altitude, but there’s another factor to consider.

  • Even a low Equivalent airspeed translates into a high True airspeed, so a lot of ground can be covered during gliding descent.One can therefore command the glider to descend in a circle or figure-of-eight to minimise glide distance, but there’s a problem: the radius of the glider’s turning circle is determined by the centrifugal force generated during the turn, which depends upon True airspeed.

  • Suppose the minimum airspeed for the fins to work effectively on a typical rocket is ‘V’ metres per second at sea level, so that the launcher has to be long enough to allow the rocket to attain ‘V’ metres per second Equivalent airspeed as it leaves the end of the launcher at high altitude.

  • This means that an Equivalent airspeed of only 35.5 metres per second (69 knots) is Mach 1 at 100,000 feet altitude.So your rocket needs fins and a nosecone designed for supersonic flight.

  • Equivalent airspeed (EAS) factors in compressibility (only an issue for high-speed aircraft) True airspeed (TAS) factors in non-standard pressure and temperature.

Related to Equivalent airspeed

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  • Equivalent Amount of any currency with respect to any amount of Dollars at any date shall mean the equivalent in such currency of such amount of Dollars, calculated on the basis of the Exchange Rate for such other currency at 11:00 a.m., London time, on the date on or as of which such amount is to be determined.

  • Dose equivalent (HT means the product of the absorbed dose in tissue, quality factor, and all other necessary modifying factors at the location of interest. The units of dose equivalent are the sievert (Sv) and rem.

  • Aluminum equivalent means the thickness of type 1100 aluminum alloy affording the same attenuation, under specified conditions, as the material in question.

  • Equivalent method means any method of sampling and analyzing for an air pollutant that has been demonstrated to the satisfaction of the commissioner and the U.S. EPA to have a consistent and quantitatively known relationship to the reference method under specific conditions.

  • Equivalent position means an employment position that:

  • DBRS Equivalent Rating means, with respect to any date and any Person with respect to whom DBRS does not maintain a public Relevant DBRS Rating as of such date,

  • Equivalent e-document means an electronic equivalent of a document, issued by the issuing authority of such document with its valid digital signature including documents issued to the digital locker account of the client as per rule 9 of the Information Technology (Preservation and Retention of Information by Intermediaries Providing Digital Locker Facilities) Rules, 2016.

  • Equivalent residential unit means a dwelling, unit, or development that is equal

  • Lead equivalent means the thickness of lead affording the same attenuation, under specified conditions, as the material in question.

  • Dose equivalent (HT) means the product of the absorbed dose in tissue, quality factor, and all other necessary modifying factors at the location of interest. The units of dose equivalent are the sievert (Sv) and rem.

  • Put Equivalent Position shall have the meaning set forth in Rule 16a-1(h) under the Exchange Act.

  • Dividend Equivalent Unit means the right to receive a payment, in cash or Shares, equal to the cash dividends or other cash distributions paid with respect to a Share.

  • Equivalent Preferred Stock shall have the meaning set forth in Section 11(b) hereof.

  • Equivalent Services shall have the meaning set out in Clause 6.3;

  • Equivalent Preferred Shares shall have the meaning set forth in Section 11(b) hereof.

  • Equivalent Security means any Security issued by the same entity as the issuer of a subject Security, including options, rights, stock appreciation rights, warrants, preferred stock, restricted stock, phantom stock, bonds, and other obligations of that company or Security otherwise convertible into that Security. Options on Securities are included even if, technically, they are issued by the Options Clearing Corporation or a similar entity.

  • Units serving lower income households means units that are occupied by lower income households at an affordable rent, as defined in section 50053 of the Health and Safety Code or, to the extent that the terms of federal, state, or local financing or financial assistance conflicts with section 50053, rents that do not exceed those prescribed by the terms of the financing or financial assistance. Effective October 13, 2017, pursuant to Revenue and Taxation Code section 214(g)(2)(A)(iii), a unit in a property that receives federal low income housing tax credits shall continue to be treated as occupied by a lower income household if the occupants were lower income households on the lien date in the fiscal year in which their occupancy of the unit commenced and the unit continues to be rent restricted, notwithstanding an increase in the income of the occupants of the unit to 140 percent of area median income (AMI), adjusted for family size (“over-income” tenants). Units reserved for lower income households at an affordable rent that are temporarily vacant due to tenant turnover or repairs shall be counted as occupied.

  • Approximate Equivalent Amount of any currency with respect to any amount of Dollars shall mean the Equivalent Amount of such currency with respect to such amount of Dollars on or as of such date, rounded up to the nearest amount of such currency as determined by the Administrative Agent from time to time.

  • Call Equivalent Position shall have the meaning set forth in Rule 16a-1(b) under the Exchange Act.

  • Interest Equivalent means a yield on a 360-day basis of a discount basis security which is equal to the yield on an equivalent interest-bearing security.

  • SPS AER Value means the Underlying Reference Value.

  • Equivalent Shares means Preferred Shares and any other class or series of capital stock of the Company which is entitled to the same rights, privileges and preferences as the Preferred Shares.

  • Effective dose equivalent (HE), means the sum of the products of the dose equivalent to each organ or tissue (HT), and the weighting factor (wT,) applicable to each of the body organs or tissues that are irradiated.

  • Distribution Equivalent Right means an Award granted under Article XIII of the Plan which entitles the Holder to receive bookkeeping credits, cash payments and/or Share distributions equal in amount to the distributions that would have been made to the Holder had the Holder held a specified number of Shares during the period the Holder held the Distribution Equivalent Right.

  • Daily Measurement Value means the Specified Dollar Amount (if any), divided by 40.