For example, consider a runway located at 0 m mslmean sea level, and with 101800pa of reported sea level pressure by the way that is a possible. The bendixking kra405b radar altimeter modification for as350 and ec consists of the installation of one radar altimeter unit kra 405b, two antennas on the helicopter tail cone and a kni416 radar altimeter display on the instrument panel. Confidential and proprietary the information contained in this document shall remain the sole exclusive property of s. Nevertheless, unless the airport has high closein terrain, the radio altimeter indication should reasonably agree with the height above airport elevation obtained by direct reading of the altimeter if using qfe or by computation if using qnh. Pdf hy2a radar altimeter design and in flight results. Kra 405b11 provides a software modification version 0104 designed to provide enhanced performance at low altitudes over highly reflective surfaces, provide more tolerant onground. Apart from actual altimeter data, rads provides here a suite of applications and subroutines that simplify the reading, editing and handling of data from various radar. The operating characteristics are different, the pulse system is fairly simple you transmit a pulse, receive the pulse, and calculate the delay between the two. The eox series 6000 altimeter test set is designed to test and calibrate radar altimeter systems. Kra 405b radar altimeter installation manual page 29 006105360010 rev. Two light weight options available lowest weight radar altimeters on the market. Kra 405b radar altimeter manual get download your manual and user guides for kra 405b radar altimeter manual pdf. Mar 30, 2020 the radar altimeter database system rads was developed by the delft institute for earthoriented space research, the noaa laboratory for satellite altimetry, and eumetsat.
Figure 46 shows one of the possible indications of a. Radar altimeter an apn171v for podcast 002 authorstream. Beamlimited altimeter a plot of return power versus time for a beamlimited altimeter looks like the heights of the specular points, i. Bendix king kra 1010a radar altimeters installation. Download lightware terminal software from za library documents software onto your pc. This special airworthiness information bulletin is to inform owners and operators of aircraft equipped with the kra 405b radar altimeter of a. Only 350g in the standard housing and sensational 160g for an integrated oem version. Description the system processes the time between a transmitted burst of radar energy and the reflected returned energy into an altitude measurement.
Kra 405b 11 provides a software modification version 0104 designed to provide enhanced performance at low altitudes over highly reflective surfaces, provide more tolerant onground. The series 6000 provides multiple, programmable delays with front panel andor remote computer control. This animation shows an altimeter used in aviation. Adapters for heliborne radar altimeter for anapn172 digital radar altimeters. Purpose the anapn 171v radar altimeter system provides both pilots with a constant visual indication of absolute altitude measured between 0 and 5000 feet above the terrain. Currently, product features and specifications are not available. Only on most cat ii approaches can the ra be used to determine da instead of the baro altimeters, because where ra is stated on the cat ii chart the elevation of the cat ii da point has been surveyed. In january 1989 bendixking changed from a nine digit to a twelve digit part numbering system. Bendixking kra 405 radar altimeter rare bendixking kra 405 radar altimeter, installation manual, revision june, 2003. Topex altimeter range stability estimates from calibration. Home radar smartmicro radar smartmicro altimeter umrr0a. Caution the sf11 laser altimeter contains a laser and should never be aimed at a person or an animal. Power to operate the radar altimeter is supplied by the no. The delay dopplersar altimeter differs from a conventional radar altimeter in that it exploits coherent processing of groups of transmitted pulses.
This and the next page present the 19 pictures in luftgaukommando report 1054, for b24d 4263792. All documents are in english, pdf format, page size us letter. When commanded to calibration mode, the topex altimeter first enters cal1 and then cal2. Unfollow radar altimeter to stop getting updates on your ebay feed.
The change in kuband range, from day 239 of 1992 to the beginning of 1997, is. Radio altimeter definition is an altimeter utilizing the lag between the time of transmission of a radio wave from an airplane and the time of reception of the. Altimeter calibration and testing reliability 140,000 hours of operation in field environments systems in continuous operation for more than 4 years description the eox series 6000 altimeter test set is designed to test and calibrate radar altimeter systems. This is due to the local weather conditions that lead to a different pressure at ground level. The kra405b pn 066011530202 provides an audio output that can be connected direct to an open selection on an audio panel. In the aircraft i fly, the radar altimeter aka radio altimeter is calibrated for the installation, and the calibration compensates for the flight attitude of the aircraft at touchdown. Radar altimeter fundamentals and nearshore measurements. Contrary to what its name might lead you to believe, an altimeter does not directly measure altitude. Reference documents etso2c87 tso, low range radio altimeters ed30 minimum performance specification for airborne low altitude range radio radar altimeter equipment rtcado160e environmental conditions and test procedures for airborne equipment. The kra 405b radar altimeter radalt is a lightweight, solidstate, airborne altimeter that provides accurate altitude measurements above terrain during various portions of flight. The kra405b radar altimeter radalt is a lightweight, solidstate, airborne altimeter that provides accurate altitude measurements. The indicator displays the agl altitude and the pilots preselected decision height dh in a. King kra 1010a radar altimeter installation manual 1985.
The radio altimeter is an important tool to help minimise the risk of cfit, because it provides an independent and unambiguous warning of proximity to the ground, regardless of any navigational uncertainty or error, e. With more than 10,000 produced and sold to date and more than four million service hours, the kra 405b radalt has proven to be one of. Lr amx, panavia tornado and eurofighter typhoon versions. Nevertheless, unless the airport has high closein terrain, the radioaltimeter indication should reasonably agree with the height above airport elevation obtained by direct reading of the altimeter if. First, lets get the equipment straight a radar altimeter uses a pulse transmission characteristic, and a radio altimeter is fm cw both transmitters operate near or at 4. Kra 405b radar altimeter installation manual the kra 405b radar altimeter system consists of the kra 405b receiver transmitter, the kni 415 or kni 416 indicator, and two 2 ka 54a antennas.
The format is identical to that followed in the blog post covering the luftgaukommando report for b24h liberator tell me more by scrolling down the post from top to bottom, youll see images of the two pages in the report listing the captions of the photos. Mostly the case although the ras on an autoland aircraft are required for even a vfr autoland. The radio altimeter transmits radio frequency signals toward the. We answer questions and will provide many detailed photos, email us.
This panel mounted indicator provides essential information when there are no visual clues to the landscape surrounding the airport or the pilots flight path. Bendix king kra 405b radar altimeter installation manual, revision 10 october 2005. This special airworthiness information bulletin is to inform owners and operators of aircraft equipped with the kra 405b radar altimeter of a potential undetected failure condition, wherein the radar altimeter may provide erroneous altitude information. Mar 21, 2014 garmin expands radar altimeter line march 21, 2014 by general aviation news staff garmin has unveiled a radar altimeter solution that expands upon garmins all digital gra 5500 radar altimeter to include the gra 55, a costeffective radar altimeter designed specifically for helicopters and general aviation aircraft.
Some operators prefer to have both visual indication and aural altering of decision height from the radar altimeter system. Controls and functions, radar altimeter an apn209a. Topex radar altimeter engineering assessment report update launch to january 1, 1998 onorvolume 11 page 22 june 1998 been reprocessed using the revised method. The kra 405b pn 066011530202 provides an audio output that can be connected direct to an open selection on an audio panel. Otherwise, for the kra 405b pn 066011530101 an external sonalert can be installed for aural altering. Project documentation micro radar altimeter data sheet. N kra 405b radar altimeter installation manual 3 make. Radio altimeter definition of radio altimeter by merriam. Radar altimeter fundamentals and nearshore measurements a brief commentary on wellknown concepts, presented to help unify terminology and focus discussions in this workshop r. Otherwise, for the kra405b pn 066011530101 an external sonalert can be installed for aural.
Topex radar altimeter engineering assessment report update launch to january 1, 1998 onor volume 11 page 22 june 1998 been reprocessed using the revised method. The potential for disruption of normal radio altimeter operation stemming from the emissions of nonaeronautical and nonsafety service systems operating in the 4 200 4 400 mhz band would clearly be unacceptable 5. The radar altimeter database system rads was developed by the delft institute for earthoriented space research, the noaa laboratory for satellite altimetry, and eumetsat. Why did bendixking change their part numbers from a 9 digit to a 12 digit format. The tra3000 and tra3500 radar altimeters are used with the tri40 indicator. The second mode, cal2, is to characterize the response of the receiver and digital filter bank. The actual altitude of the earths surface with respect to the reference ellipsoid can be calculated by subtracting from the satellitetoearthssurface range h measured by the altimeter, the independently known satellite orbit height h. Equipment installation manual for the gdc62 radio altimeter. Garmin has unveiled a radar altimeter solution that expands upon garmins all digital gra 5500 radar altimeter to include the gra 55, a costeffective radar altimeter designed specifically for helicopters and general aviation aircraft. Flight operations briefing notes in figure 2, the actual qnh is an unusually high 30. The radar altimeter is considered radio navigation avionics, and in many cases is required equipment. View online or download honeywell bendixking kra 405b installation manual. Eox series 6000 altimeter test set home eastern optx.
Airborne sarinterferometric radar altimeter system epic awi. Precise altitude above ground level agl measurements from the mra type 1 can provide information to. The entire system is solid state except for a servo mechanism and relay in the indicator. Project documentation micro radar altimeter user manual. As one of main payloads of hy2a, hy2a radar altimeter rahy2a has been. A radar altimeter is a lowpower radar system that m easures the height of an aircraft or other aerospace vehicle above the ground. Is the bendixking kra 405b a direct replacement for the original kra 405 radar altimeter. An altimeter that follows model equations will report a wrong altitude when the plane is on the runway. Topography experiment topex software document series volume. The pressure at a point depends on the weight of the column of air which extends vertically upwards from the point to the outer limit of the atmosphere. This item is used equipment and we are selling this item untest. Radio altimeter definition is an altimeter utilizing the lag between the time of transmission of a radio wave from an airplane and the time of reception of the same wave after reflection from the ground. Pn 038000080001 is suggested and the kra 405b installation manual shows detailed information on how to install it. Controls indicator function lo set knob either pilots lo set knob applies power to altimeter system.
It is not pulselimited like classical radar altimeters, so the full doppler bandwidth is exploited to make the most efficient use of the power reflected from the surface. Kra 405b radar altimeter manual 405b radar altimeter manual. An adjustment enables one to make an altitude correction. The kra 450b radar altimeter systems includes the kra45b receiver transmitter, a kni 415 fixed wing or kni 416 helicopter. It is a pressure measuring instrument used to estimate an altitude. The principle of radar altimetry is depicted in figure 3. Figure 46 shows one of the possible indications of a failed radar altimeter. Radar altimeters are crucial to all transport aircraft descent from at least 2500ft of altitude and to as high as 8000ft of altitude. Hg but the altimeter setting was mistakenly set to a more usual 29. However, remember that where the radar altimeter supplies height above terrain, the barometric altimeter gives height above sea level.
Efm, llc is not liable for the accuracy, effectiveness or safe use of any aircraft manual or publication and does not warrant that any aircraft manual or. The combined altitude radar altimeter cara is an allsolidstate 0 to 50,000 ft fmcw radar altimeter system operating at a nominal frequency of 4. Do not look at the beam directly with optical instruments. This technologically leading product is intended for standard uavs, small uavs suav, micro. Topography experiment topex software document series.
Hy2a, the chinas first satellite for oceanic dynamic environment measurement, was launched on august 16th, 2011. The radar altimeter system provides to the pilot a precise 02000 feet agl information. It features ultra wide bandwidth, low loss, high isolation, and high dynamic range. Tra3000 and tra3500 radar altimeters eon geosciences. The integrated oem option is suited for integration into the customers enclosure. Radar altimeter requirement for cat i, ii, iii pprune forums.
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