Scale speed calculator

Author: f | 2025-04-24

5 Scale Speed Calculator The scale speed calculator assists in the calculation of the scale speed a model train is travelling. The following section describes the operation of the calculator. View Speed Calculator Opens the scale speed calculator. 5.1 How to calculate the scale speed The following describes the method to calculate the scale speed. Enter the real speed (mph) and the scale into the Scale Speed Calculator. The calculator will evaluate the Scale Speed.

Scale Speed Calculator - RAILROAD.NET

Said altitude scales being proportioned in terms of indicated air speed below respective predetermined altitudes to correspond to respective predetermined aircraft speeds, said distance and each of said altitude scales being respectively proportioned so that, when a target distance on the distance scale is aligned with a target altitude on a respective altitude scale, the actual altitude on said respective altitude scale is aligned with a desired fuel efficient distance on the distance scale for commencing the descent, and means mutually securing said first and additional members for relative aligned movement. 8. The calculator of claim 7, wherein each of said altitude scales are proportioned to correspond to mach speed above respective predetermined transition altitudes, and to indicated air speed below said transition altitudes. 9. The calculator of claim 8, wherein said transition altitudes correspond substantially to the altitudes above which mach speed exceeds indicated air speed, and below which indicated air speed exceeds mach speed, for each respective altitude scale. 10. The calculator of claims 7, 8, or 9, wherein said distance scale is substantially linear. 11. The calculator of claim 7, wherein each of said altitude scales extend over approximately equal altitude ranges. 12. A manually operable calculator for calculating a beginning of descent position to optimize aircraft fuel consumption during descent from an actual altitude and distance to a target altitude and distance, comprising:a first member having a distance scale displayed thereon, display means having a plurality of altitude scales displayed thereon extending over substantially equal altitude ranges, each of said altitude scales being proportioned in terms of indicated air speed below respective predetermined altitudes to correspond to respective predetermined aircraft speeds and respectively alignable with said distance scale, each of said altitude scales extending over approximately equal altitude ranges, said distance scale and each of said To provide a descent rate, which is a more difficult procedure than an idle descent. an aircraft descent calculator which is capable of taking into account and adjusting to different conditions or aircraft weight, wind, aircraft speed and altitude, and without unduly complicating the device. Another object of the invention is the provision of a novel and improved aircraft descent calculator which provides a fuel effecient descent profile including changes in aircraft speed during the descent. a manually operable calculator for optimizing aircraft fuel consumption during descent from an actual altitude and distance to a target altitude and distance is provided with a first member having a distance scale displayed thereon, and at least one additional member having an altitude scale displayed thereon. the first and additional members are mutually secured and alignable, and their respective distance and altitude scales are proportioned such that, when a target distance on the distance scale is aligned with a target altitude on the altitude scale, the actual altitude on the altitude scale is aligned with a desired fuel efficient distance for commencing the descent, for a given aircraft weight and speed and a given wind condition. an aircraft weight and wind correction scale is provided, by which a correction factor can be obtained to correct the indicated distance for commencing the descent. the correction scale preferrably comprises a first portion for determining a gross correction factor corresponding to a maximum altitude, and a second scale portion which proportions the gross correction factor in accordance with the actual aircraft altitude. a plurality of altitude scales are provided on a corresponding plurality of members which are secured for relative aligned movement with the distance scale member. Each altitude scale is proportioned to correspond with a respective aircraft speed, thereby enabling the calculator to give accurate

Scale Speed Calculator - nScale.net

Profile to maximize fuel savings. Another object of the invention is the provision of a novel and improved aircraft descent calculator which provides a fuel effecient descent profile including changes in aircraft speed during the descent. In the accomplishment of these and other objects of the invention, a manually operable calculator for optimizing aircraft fuel consumption during descent from an actual altitude and distance to a target altitude and distance is provided with a first member having a distance scale displayed thereon, and at least one additional member having an altitude scale displayed thereon. The first and additional members are mutually secured and alignable, and their respective distance and altitude scales are proportioned such that, when a target distance on the distance scale is aligned with a target altitude on the altitude scale, the actual altitude on the altitude scale is aligned with a desired fuel efficient distance for commencing the descent, for a given aircraft weight and speed and a given wind condition. In addition, an aircraft weight and wind correction scale is provided, by which a correction factor can be obtained to correct the indicated distance for commencing the descent. The correction scale preferrably comprises a first portion for determining a gross correction factor corresponding to a maximum altitude, and a second scale portion which proportions the gross correction factor in accordance with the actual aircraft altitude. In the preferred embodiment, a plurality of altitude scales are provided on a corresponding plurality of members which are secured for relative aligned movement with the distance scale member. Each altitude scale is proportioned to correspond with a respective aircraft speed, thereby enabling the calculator to give accurate results for different descent speeds, and for descents involving decelerations or accelerations in speed. Additional calculator accuracy is achieved by proportioning the altitude. 5 Scale Speed Calculator The scale speed calculator assists in the calculation of the scale speed a model train is travelling. The following section describes the operation of the calculator. View Speed Calculator Opens the scale speed calculator. 5.1 How to calculate the scale speed The following describes the method to calculate the scale speed. Enter the real speed (mph) and the scale into the Scale Speed Calculator. The calculator will evaluate the Scale Speed.

Scale Speed Calculators - Model Buildings

Altitude to be lost during the descent. 3. The calculator of claim 2, further comprising means having a second altitude scale displayed thereon, said second altitude scale being proportioned in terms of indicated air speed below a predetermined altitude, said first and second altitude scales being proportioned to correspond respectively to first and second aircraft speeds, said distance and second altitude scales being mutually alignable and proportioned so that, when a target distance on the distance scale is aligned with a target altitude on the second altitude scale, the actual altitude on the second altitude scale is aligned with a desired fuel efficient distance on the distance scale for commencing a descent to the target altitude and distance, for a given aircraft weight and speed and a given wind condition. 4. The calculator of claim 3, said second altitude scale being displayed on a third member which is mutually secured and alignable with said first member. 5. The calculator of claim 4, said correction scale being displayed on a fourth member which is mutually secured to said second and third members, said correction scale being alignable with either one of said first and second altitude scales. 6. The calculator of claim 1 or 2, said correction scale means including means for determining separate weight and wind correction factors, said separate correction factors being aggregable to a single correction factor. 7. A manually operable calculator for calculating a beginning of descent position to optimize aircraft fuel consumption during descent from an actual altitude and distance to a target altitude and distance, comprising:a first member having a distance scale displayed thereon, a plurality of additional members, each of said additional members being alignable with said first member, and having respective altitude scales displayed thereon extending over substantially equal altitude ranges, each of Useful for descents which involve a deceleration from one speed to a lower speed. the pilot would use the altitude and distance of the deceleration point as his first target, and use the calculator to determine the distance for beginning a high speed descent to that point along the distance corresponding to the higher speed. the pilot can reset the calculator so that the ultimate target distance on the lower speed distance scale is aligned with the ultimate target altitude, and read the distance corresponding to the present altitude. a wind/weight correction factor would then be determined as described above. Extra distance necessary to decelerate can also be accounted for. the target altitude of 13,000 feet would be aligned with 32 miles on the 280 knot distance scale, rather than 30 miles. the calculator is in the general form of a circular slide rule mounted on a center card member 22. a plurality of circular disk members 24, 26 and 28 of progressively decreasing diameter are stack mounted on one side of card 22, and a similar plurality of disk members 30, 32 and 34 of progressively decreasing diameter are stack mounted on the opposite side of card 22. a pin 36 extending through card 22 and the centers of the various disks secures the disks to the card, whereby each of the disks can be rotated relative to the card and to the other disks. a pair of cursor elements 38 and 40 are also secured over the outermost disks on each side of the card to assist in reading the information provided by the calculator. FIGS. 4 and 5 employs only a single distance scale and a plurality of individually proportioned altitude scales, each altitude scale corresponding to a particular speed. This arrangement has been found to make

Beaufort scale wind speed calculator

Savings, is calculated by subtracting 3.5 from the mileage otherwise indicated by the calculator for beginning the descent. The calculator is also very useful in monitoring the aircraft's adherence to a fuel efficient descent profile once the descent had begun. The pilot keeps stick 16 in place with the target altitude aligned with the target distance, and reads the calculated distance corresponding to any given altitude during the descent. This calculated distance is corrected by a net wind and weight correction factor for the particular altitude, to tell the pilot whether he is at the correct distance for the given altitude. The calculator is particularly useful for descents which involve a deceleration from one speed to a lower speed. The pilot would use the altitude and distance of the deceleration point as his first target, and use the calculator to determine the distance for beginning a high speed descent to that point along the distance corresponding to the higher speed. When that point is reached, the pilot can reset the calculator so that the ultimate target distance on the lower speed distance scale is aligned with the ultimate target altitude, and read the distance corresponding to the present altitude. A wind/weight correction factor would then be determined as described above. Extra distance necessary to decelerate can also be accounted for. In the example described above, assuming the aircraft was required to be slowed to 250 knots at 13,000 feet and 30 miles DME from an initial speed of 280 knots, and that a deceleration distance of two miles was required, the target altitude of 13,000 feet would be aligned with 32 miles on the 280 knot distance scale, rather than 30 miles. Referring now to FIGS. 4 and 5, a second embodiment of the invention is shown which offers several

Model railroad scale speed calculator

The angle of descent until the shallower low speed descent profile is intercepted, and then follow that profile. The present invention thus provides an accurate and easy to use tool for a pilot to determine and follow a fuel efficient descent profile. While numerous variations and modifications to the embodiments described above may occur to those skilled in the art, it is intended that the invention be limited only in terms of the appended claims. Claims (14) I claim: 1. A manually operable calculator for calculating a beginning of descent position to optimize aircraft fuel consumption during descent from an actual altitude and distance to a target altitude and distance, comprising:a first member having a distance scale displayed thereon, a second member having a first altitude scale displayed thereon, said first altitude scale being proportional in terms of indicated air speed below a predetermined altitude, said first and second members being mutually alignable and said distance and first altitude scales being proportioned so that, when a target distance on the distance scale is aligned with a target altitude on the first altitude scale, the actual altitude on the first altitude scale is aligned with a desired fuel efficient distance on the distance scale for commencing the descent, for a given aircraft weight and speed and a given wind condition, an aircraft weight and wind correction scale means, said correction scale means providing a correction factor to adjust the indicated distance for commencing a descent based upon the aircraft weight and prevailing wind conditions, and means mutually securing said first and second members for relative aligned movement. 2. The calculator of claim 1, said correction scale means including means for determining a gross correction factor, and a correction scale display proportioning the gross correction factor in accordance with the actual aircraft. 5 Scale Speed Calculator The scale speed calculator assists in the calculation of the scale speed a model train is travelling. The following section describes the operation of the calculator. View Speed Calculator Opens the scale speed calculator. 5.1 How to calculate the scale speed The following describes the method to calculate the scale speed. Enter the real speed (mph) and the scale into the Scale Speed Calculator. The calculator will evaluate the Scale Speed.

Scale Speed Calculator Free [32

Results for different descent speeds, and for descents involving decelerations or accelerations in speed. Additional calculator accuracy is achieved by proportioning the altitude scales for each aircraft speed in terms of mach speed above predetermined transition altitudes, and in terms of indicated air speed below the transition altitudes. the transition altitude for each aircraft speed is equal to that altitude above which mach speed exceeds indicated air speed, and below which indicated air speed exceeds mach speed. the descent gradient (or altitude loss/mileage ratio) for any particular idle descent varies at different altitude ranges, primarily because of the mach-indicated air speed cross-over, and to a lesser degree because of changes in air density and true air speed as altitude changes. Accuracy in this regard is achieved in the present invention by making a single distance scale linear and a plurality of the altitude scales variable to reflect accurately the proper altitude/mileage ratio for a particular altitude segment and aircraft speed. Furthermore, the various altitude scales extend over approximately equal altitude ranges. FIG. 1 is a plan view of a calculator constructed in accordance with the invention, in a linear slide rule type format FIGS. 2 and 3 are cross-sectional views taken along the lines 2--2 and 3--3 of FIG. 1 respectively; FIGS. 4 and 5 are respectively plan and side views of another embodiment of the calculator constructed in a circular slide rule format. FIG. 6 is a sectional view showing a courser device used in conjunction with the calculator shown in FIGS. 4 and 5. a first embodiment of the invention in the form of a linear slide rule-type calculator is shown. a first, generally rectangular card 2 formed from a durable plastic or cardboard has a longitudinal slot 4 cut out of its central portion. Equally proportioned altitude