| Effect of Thermal Processing on the Fracture Toughness of 8090 Alloy Sheet and Plate. |
1992 |
|
| Authors:
P. D. Pitcher; D. S. McDarmaid; C. J. Peel; G. Hall; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
 | This paper presents a study on the effects of thermal processing on the fracture toughness of 8090 aluminum lithium alloy. Double cantilever beam tests were carried out to obtain fracture toughness values. Transmission electron microscopy was used to obtain microstructural information. The quench rate and reversion aging have a significant effect on the fracture toughness. |
|
| Integrating Machine Intelligence into the Cockpit, |
SEP 1991 |
|
| Authors:
E. J. Lovesey; R. I. Davis; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| Combat aircraft of the 21st Century will have to be increasingly well equipped to counter the future threat, which itself will have become far more potent. This spiralling system complexity will result in unacceptably high cockpit workloads unless some form of automation is provided to aid the pilot. UK Industry and Government have combined to form a Joint Venture team to investigate the problem and to develop a Mission Management ... |
|
| In-Flight Measurements on a Tornado Aircraft for Stores Carriage and Release Research |
MAY 90 |
21 pages |
| Authors:
G. W. Foster; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
 | Flight trials with a Tornado aircraft to produce full-scale experimental data for stores carriage loads, release trajectories and flow surveys are described. The instrumentation carried by the aircraft is introduced and the facilities for analysing the resulting data outlined. Some examples from flow surveys are presented. Keywords: Flight testing, Aerodynamics, Aircraft external stores, Great Britain. |
|
| Tracking in Uncertain Environments |
SEP 89 |
289 pages |
| Authors:
D. J. Salmond; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| A tracking filter is an algorithm for estimating the state (such as position and velocity) of an object from measurements of a sensor such as a radar. This study concerns the problem of tracking a target when the origin of the sensor measurements is uncertain. The full Bayesian solution to this type of problem gives rise to Gaussian mixture distributions, which are composed of an ever increasing number of components. ... |
|
| The RAE Experimental Data-Base for Missiles at High Mach Number and Its Use in Assessing CFD Methods, |
NOV 1987 |
|
| Authors:
J. Hodges; L. C. Ward; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| Wind-tunnel tests are being performed in order to measure overall and panel forces and moments on cruciform body-control and body-wing missile configurations at M = 2.5, 3.5 adn 4.5. When completed, the test results will provide a wide-ranging data-base suitable for inclusion into semi-empirical prediction methods. Additionally it can be used to help validate and assess the computational fluid dynamic (CFD) methods that are available. This paper gives a detailed ... |
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| An Examination of the Impact of Potential Advances in Component Technology for Future Military Engines, |
SEP 1987 |
|
| Authors:
M. R. Litchfield; M. G. Philpot; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| The paper examines the prospects for major advances in gas turbine engine component technology over the next 20 years. For future military engines and aircraft, these advances could lead to considerably higher thrust/weight ratios than are currently available. The gains in engine performance resulting from various specific technology advances are outlined and their impact on the sizing and performance of a typical combat aircraft are considered. In conjunction with these ... |
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| Design and Test of a High Blade Speed, High Work Capacity Transonic Turbine, |
SEP 1987 |
|
| Authors:
R. C. Kingcombe; J. D. Bryce; N. P. Leversuch; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| A high rim speed turbine has been designed and tested at RAE Pyestock. A major objective in the design was to achieve high aerodynamic efficiency at high work capacity by way of reduced stage loading - facilitated by high blade speed. The design includes three dimensional features such as a parabolic distribution of exit angle and compound trailing edge lean on the nozzle guide vane and a thick root, highly ... |
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| Operational Load Measurements on Service Helicopters, |
JUN 1987 |
|
| Authors:
Dorothy M. Holford; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| The philosophy of Operational Load Measurement programmes as applied to rotary wing aircraft is reviewed. A major aim is to substantiate component fatigue lives in the light of operational usage. The aircraft installation to meet the objectives of the programmes is described. The analysis techniques, which are designed to provide the operator and engineer with a visibility of the origins of fatigue damage, are described with illustrative examples taken from ... |
|
| Wing Divergence of Trimmed Aircraft, |
03 OCT 1986 |
|
| Authors:
T. Niblett; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| By means of a simple theoretical model it is shown that wing divergence of a free aircraft can be defined using the static case of trimmed level flight. The same model also shows that the control angle per 'g' goes to zero at a speed near the fixed-root divergence speed and that there is a large change in the spanwise distribution of airload in going from a low speed to ... |
|
| A Comparison of the Fatigue Performance of Woven and Non-Woven CFRP (carbon Fibre Reinforced Plastics) |
JUN 1985 |
|
| Authors:
P. T. Curtis; B. B. Moore; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| Static and fatigue tests were carried out at room temperature on CFRP laminates with five layups, of both woven and nonwoven CFRP. S-N diagrams were produced for both zero tension and reversed axial loading. Damage development was monitored by optical microscopy, ultrasonic C scanning, video recording and infrared thermography. In non-woven material, notched coupons under fatigue loading did not show the notch sensitivity that was so significant under static loading. ... |
|
| Producing Desired Color Stimuli with Trichromators: A Tutorial on Technique |
FEB 85 |
25 pages |
| Authors:
Frances A. Greene; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| A summary of the theory of color mixing when using a trichromator system is presented. The derivation of needed formulae to compute any desired chromaticity coordinates and corresponding luminance requirements is given. A numerical example is provided which demonstrates the application of the formulae. Color mixing, Chromaticity, Luminance, Trichromator, CIE. |
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| A Discussion of Coning Errors Exhibited by Inertial Navigation Systems |
MAR 1984 |
|
| Authors:
D. J. Flynn; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| The mechanisms by which so called 'coning errors' occur in a strapdown inertial navigation system are explained by reference to a single mathematical theorem. Typical values of coning errors are derived and ae shown to be significant for a 1 nm/h inertial navigator. Various methods of evaluating and reducing coning errors are discussed. Originator-supplied keywords include: Dither; Ring laser gyroscope; and Vibration. |
|
| A Combined Range-Mean-Pairs Rainflow Count of Load Time Histories for Use in the Formulation of Structurally Relevant Cost Functions and Fatigue Analysis. |
OCT 1981 |
|
| Authors:
Susan D. Ellis; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| Operational aircraft experience a loading environment which varies throughout the mission. Response parameters or strain-gauge signals are measured during flight to monitor the accumulation of fatigue damage in critical areas, to provide comparisons with design criteria and to assess the structural significance of the loading patterns. A statistical count of the loading pattern is used to assess the structural severity and a brief review of various counting methods is given. ... |
|
| Geopotential Harmonics of Order 29, 30 and 31 from Analysis of Resonant Orbits |
27 AUG 1981 |
27 pages |
| Authors:
D. G. King-Hele; Doreen M. C. Walker; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| The Earth's gravitational potential is usually expressed as an infinite series of tesseral harmonics, and it is possible to evaluate 'lumped harmonics' of a particular order m by analyses of resonant satellite orbits - orbits with tracks over the Earth that repeat after m revolutions. In this paper we review results on 30th-order harmonics from analyses of 15th-order resonance, and results on 29th- and 31st-order harmonics from 29:2 and 31:2 ... |
|
| An Examination of Stability Criteria for Iterative Numerical Schemes Used in Solving Differential Equations |
JUL 1981 |
35 pages |
| Authors:
Katharine Moore; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| The stability of numerical schemes for solving algebraic finite- difference equations resulting from finite-difference approximations to differential equations is discussed. It is suggested that the von Neumann method together with its stability criterion provides a reasonably simple way of determining stability. However, there are limitations in its applicability, some of which are indicated. The method is tested in two examples and an indication is given of how best to treat ... |
|
| Table of Space Vehicles, 1958-1980 |
JUL 1981 |
52 pages |
| Authors:
H. Hiller; J. A. Pilkington; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| Details of all satellites launched into orbit about the Earth have been published in The RAE Table of Earth Satellites, 1957-1980 (Macmillan Press, 1981). The present report offers a similar listing, though in a different format, of all space vehicles that escaped from the Earth's influence as a result of the 109 space launchings during the years 1958-1980. Whenever possible, the following details are given for each component: name, international ... |
|
| Comparative Acoustic Wind-Tunnel Measurements and Theoretical Correlations on Subsonic Aircraft Propellers at Full-Scale and Model-Scale. |
JUL 1981 |
|
| Authors:
W. J. G. Trebble; J. Williams; R. P. Donnelly; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| Experiments have been completed on a Dowty-Rotol 4-bladed R292 propeller (ARA-D section) at full-scale in the 24ft anechoic tunnel and at quarter-scale on a geometrically-similar model in the 1.5m acoustic tunnel. Measurements were made of power, torque, and thrust, simultaneously with microphone recording of the propeller noise signal. Analysis of the third-octave and narrow-band spectra are presented for a range of rotational speeds up to a blade-tip Mach number of ... |
|
| A True Air Speed Sensor for Miniature Unmanned Aircraft |
JUN 1981 |
11 pages |
| Authors:
J. A. C. Beattie; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| This Memorandum describes the development of a laboratory prototype true air speed sensor for use on unmanned aircraft. The sensor works on vortex shedding principles and has a digital output. The vortices are sensed by thick film thermistor elements that are non-critical in the signal circuitry. (Author) |
|
| Automatic Relocation of Ground Control Points in Landsat Imagery |
JUN 1981 |
37 pages |
| Authors:
A. H. Benny; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| Images obtained from the Landsat multispectral scanner are not provided in any normally recognised map projection system, so it is often necessary for a transformation to be made. This is usually done with the aid of ground control points, whose locations on the ground (or on a map) are accurately known and which can be accurately located within Landsat images. The initial selection and location of such ground control points ... |
|
| The Structural Formation and Physical Behaviour of Cross-Linked Epoxy Resins |
APR 1981 |
44 pages |
| Authors:
M. Fisher; F. Lohse; R. Schmid; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| Network structures and physical properties of products obtained either by crosslinking polyepoxides with polyphenols, and by dicyandiamide or by catalytic polymerization are discussed and compared with those obtained by amine or anhydride curing. The highest crosslinking density is achieved by the polymerization of epoxy compounds. In polymerization, the glass transition temperature may rise by more than Delta T sub gv = 100 K. Amine and phenol curing result in similarly ... |
|
| A Test Facility for the Objective Measurement of Circumaural Hearing Protector Attenuation |
Feb 1981 |
32 pages |
| Authors:
J A Chillery; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| The continuing development of the circumaural hearing protector requires control of the quality of this device. Current standard methods of protector attenuation measurements are expensive and time-consuming and wholly unsuitable for the quality control of quantity production. Performance of this task requires an objective test facility or 'artificial head'. This paper describes stages in the development of a facility suitable for quality control work and also useful as a research ... |
|
| European Research Program on Viscous Flows |
NOV 1980 |
119 pages |
| Authors:
P. D. Smith; B. van den Berg; J. Cousteix; T. K. Fannelop; W. Kordulla; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| Partial Contents: Solution of the Complete Navier-Stokes Equations; Transition and Reversed Transition; Boundary Layer Experiments; Theory and Experiments on the Structure of Turbulent Shear Flows; Predictional Methods for Two-Dimensional Boundary Layers; Prediction Methods for Three-Dimensional Boundary Layers; Wakes and Trailing Edge Flows; Flows in Corners, Ducts and Rotating Machinery; Shockwave Boundary Layer Interactions; Separation and Reattchment; Free Shear Layers and Jets; Heat Transfer; Mass Transfer and Boundary Layer Control; Pressure ... |
|
| Catalogue of the Publications Issued by Defence Investigation Department/Research Department Exeter between 1936 and 1942, |
19 AUG 1980 |
|
| Authors:
S. A. Thornton; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
|
| Swedish Defence Research Abstracts 78/79-3 (Froe Foersvars Forsknings Referat 78/79-3). |
01 NOV 1979 |
|
| Authors:
ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
|
| A Device for Tracking the Fundamental Frequency of Speech and its Application in the Assessment of 'Strain' in Pilots and Air Traffic Controllers |
MAY 1979 |
58 pages |
| Authors:
J. B. Peckham; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| The use of the speech signal for assessing physiological and psychological changes resulting from 'strain' in pilots and air traffic controllers is explained and a device is described for tracking one of the parameters of the speech signal, the fundamental frequency, to quantify changes in this parameter due to 'strain'. |
|
| Skylab 1 Rocket, 1973-27B: Orbit Determination and Analysis |
24 APR 1979 |
69 pages |
| Authors:
D. G. King-Hele; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| Contents: Introduction; The Observations; The Orbits; Analysis of the Observations; Revision of the Orbits; The 31:2 Resonance; Upper-Atmosphere Rotation; Analysis of Variations in Eccentricity due to Air Drag; Conclusions; Appendix: Correction of Eccentricity to Remove the Effect of the Day-To-Night Variation in Air Density. |
|
| Swedish Defence Research Abstracts 77/78-4 (Froe Foersvars Forsknings Referat 77/78-4). |
02 FEB 1979 |
|
| Authors:
ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
|
| Practical Accelerometer Testing. |
DEC 1978 |
26 pages |
| Authors:
C. M. Philip; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| In calibrating modern inertial quality accelerometers which are accurate to a few parts in a million, extreme care must be exercised in measurement technique and interpretation of the results. This Report analyses some of the tests which are performed currently and discusses the effects of errors in the test equipment. (Author) |
|
| The Determination of the Stability of Structures of Composite Materials Subjected to Intense Surface Heating (K Opredeleniyu Nesushchei Sposobnosti Konstruktsii iz Kompozitsionnykh Materialov pri Intensivnom Poverkhnostnom Nagrevee) |
08 JUN 1978 |
|
| Authors:
L. G. Belozerov; V. A. Kireev; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| The effect of destructive heating applied to the surface of a cylindrical shell of composite material subjected to compressive end loads or uniform external pressure is considered theoretically, and the results compared with those of previously reported experiments by the same authors. The reduction in the value of critical load which occurs with increasing exposure time is considered in terms of the reducing structurally effective thickness of the wall. (Author-PL). ... |
|
| Study of Traffic Packing over the North Atlantic. |
JUL 1977 |
|
| Authors:
Rosalind S. Sheil; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| This report updates the work first carried out by P.P. Scott on North Atlantic data for 1967-data for 1973 is now examined. Relationships are found between the number of flights in a day and measures of the occupancies of the tracks and flight levels which are adjacent to those of a 'typical' aircraft. These results are used to construct a flight request pattern required as input data to a simulation ... |
|
| Behaviour of a Vortex Sheet Separating from a Smooth Surface |
APR 1977 |
73 pages |
| Authors:
J. H. B. Smith; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| The behaviour of a vortex sheet embedded in an irrotational steady flow and springing from a separation line on a smooth body is studied in the neighbourhood of the separation line. It is shown first that the vortex sheet is tangential to the wall along the separation line. then, under the assumptions that the body is slender and the separation line is highly swept, it is shown that the exponent ... |
|
| Continuous Whole-Earth Coverage by Circular-Orbit Satellite Patterns |
24 MAR 1977 |
80 pages |
| Authors:
J. G. Walker; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| Earlier studies of continuous whole-Earth coverage by patterns of satellites in equal-period circular orbits have been extended by means of a computer program to patterns of up to 25 satellites and to the provision of up to seven-fold continuous coverage. The program is described and various factors which may influence the choice of pattern for a particular application are discussed, including the level of coverage provided, the minimum satellite separation, ... |
|
| The Passive Characteristics of a Repulsion Magnetic Bearing |
DEC 1976 |
42 pages |
| Authors:
D. W. Lodge; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| Magnetic suspension systems can meet the requirements for spacecraft momentum wheel bearings. The main aim of the work described in this Report was to investigate the effects of interleaving soft iron spacer rings of various thicknesses between the magnetic rings of a repulsion type magnetic bearing. An optimum thickness of iron ring was found which produced a maximum increase in radial stiffness over the stiffness obtained with iron spacers. The ... |
|
| Creep of Carbon Fibre Reinforced Plastics |
DEC 1976 |
|
| Authors:
J. B. Sturgeon; R. I. Butt; L. W. Larke; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| Creep tests have been performed on unidirectional 0 deg, cross-plied 0 + 90 deg, angle-plied + or - 45 deg and multi-plied 0 + or - 45 deg and 90 + or - 45 deg carbon fibre reinforced plastics. The test temperatures were 21 deg C and 80 deg C except for + or - 45 deg orientations where the upper temperature was 50 deg C. Small creep strains were ... |
|
| An Investigation of the Initiation of Hollow Cathode Discharges |
APR 1976 |
47 pages |
| Authors:
D. G. Fearn; Angela S. Cox; D. R. Moffitt; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| Extensive investigations of the starting characteristics of several hollow cathode designs have revealed that this is a random process, dependent on temperature, mercury vapour flow rate, voltage, geometry, and the availability of a low work function material. For a given cathode and fixed conditions, the voltage necessary to start a discharge falls at random within a certain range. As temperature or flow rate are increased, the maximum value and width ... |
|
| The Effect of Atmospheric Winds on Satellite Orbits of High Eccentricity, |
JAN 1976 |
|
| Authors:
D. G. King-Hele; Doreen M. C. Walker; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| The orbits of Earth satellites with perigee heights less than 600km are liable to be appreciably perturbed by the aerodynamic forces resulting from winds in the upper atmosphere, and analysis of the changes in the orbits provides a method of determining zonal (west-to-east) and meridional (north-to-south) winds. The theory hitherto used has been developed for orbits of eccentricity e < 0.2. Here we develop the theory for the effect of ... |
|
| Work in UK on the Applications of Solar Cells in Space |
DEC 1974 |
18 pages |
| Authors:
F. C. Treble; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| British efforts and achievements in the field of photovoltaic solar energy conversion in space over the past 14 years are reviewed. The satellites powered by British solar cells are listed and the Ariel 3 array is described in detail by way of an introduction to the subject. Silicon cells of conventional thickness have been developed to a conversion efficiency exceeding 11.5% and thin cells with a superior power-to-weight ratio have ... |
|
| Mathematical Modelling of the Royal Aircraft Establishment (RAE) Lightweight Flexible Solar Array |
OCT 1974 |
23 pages |
| Authors:
R. N. A. Plimmer; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| The paper describes the development of a mathematical model for the attitude dynamics of a spacecraft equipped with a lightweight flexible solar array. The theory has been developed using a continuous mechanics approach and a computer program prepared to generate the lateral bending modes of a spacecraft comprising a rigid central structure carrying a pair of solar arrays symmetrically situated about the central body. Furthermore, the program will generate the ... |
|
| Notes on the Design of Microstrip and Stripline Bandpass Filters |
AUG 1974 |
74 pages |
| Authors:
B. Lake; W. V. Reeder; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| The paper describes procedures used to design microstrip and stripline bandpass filters. Design computer programs are included together with worked examples. Comparisons between measured and theoretical responses for a number of practical filters are given. |
|
| Range Performance in Cruising Flight |
MAR 1974 |
58 pages |
| Authors:
D. H. Peckham; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| The classical theory of range performance is reviewed, and some further relationships derived. The first part of the paper deals with 'specific range', which is the instantaneous range performance of an aircraft at a point on a cruise trajectory, in terms of distance covered per unit quantity of fuel consumed. The second part of the paper is concerned with the integration of specific range over a given flight trajectory, to ... |
|
| Automatic Flying of Curved Approach Paths - A Computer and Flight Investigation. |
FEB 1974 |
|
| Authors:
R. B. Lumsden; N. Cooke; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| Computer studies and flight experiments are described which indicate the feasibility of transport aircraft (as represented by the Comet 3B) flying automatic approaches on paths curved in azimuth and elevation. The flight paths considered have radii of curvature from 1800 m to 3000 m in azimuth and the glide paths have maximum gradients from 3 to 6 deg. The effects of various terms in the autopilot control laws are discussed ... |
|
| Swedish Defence Research Abstracts 72/73-3, Research Institute for National Defence, Stockholm |
FEB 1974 |
56 pages |
| Authors:
ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| The research reports listed deal with atomic protection (nuclear explosions and atomic warfare), biological protection (biological and chemical warfare), ammunition and weapon technology, conduct of war, information and command, vehicles, spacecraft, and human factors. |
|
| Miss Distance Measurement Using One Camera |
DEC 1973 |
36 pages |
| Authors:
A. T. Smith; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| Data from one high frame speed camera on a target can give missile trajectory and miss distance. The report gives a theoretical solution and indicates how it can be modified to process practical data in a computer. The sources of error and their magnitudes are given. |
|
| Measurements of the Drag of Some Characteristic Aircraft Excrescences Immersed in Turbulent Boundary Layers |
Sep 1973 |
62 pages |
| Authors:
L Gaudet; K G Winter; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| Measurements are described of the drag of various forms of excrescence mounted on balances installed in the walls of the working section of the RAE 8 ft x 8 ft wind tunnel. The tests cover a range of Mach numbers between 0.2 and 2.8 (but not transonic) and a range of Reynolds number. The excrescences tested include two-dimensional steps and ridges, circular cylinders and wings mounted normal to the surface, ... |
|
| PHOTO-EFFECTS IN SEMICONDUCTORS. |
1973 |
|
| Authors:
T. S. Moss; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
|
| The Specification of Navigational Capability in Relation to North Atlantic Separation Standards. |
OCT 1972 |
|
| Authors:
D. E. Lloyd; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| The paper investigates the relationship between the required lateral separation standard and a specification of navigational capability. Subsonic and supersonic aircraft are considered. Accuracy and reliability requirements for navigation equipment are derived. Collision risks are compared for two possible types of SST track structure. |
|
| Colour or Monochrome Films in Laboratory Experiments on the Acquisition of Ground Targets from Medium Altitude |
MAY 1972 |
30 pages |
| Authors:
W. F. Fielding; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| This report describes three laboratory simulation experiments to compare target acquisition performance obtained using monochrome and colour films of identical routes and targets. It is concluded that monochrome films give similar results to those obtained with colour films for relatively prominent targets capable of being acquired at long ranges in: (1) experiments which involve first-pass detection range measurements, or (2) experiments involving potential range measurements. The adequacy of monochrome films ... |
|
| Fuel Overflow and Tank Differential Pressure Due to Air Release from Fuel at Altitude |
Feb 1972 |
52 pages |
| Authors:
E A Timby; R F Wells; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
|
| FRACTURE TOUGHNESS OF ALUMINUM-ZINC-MAGNESIUM-COPPER-MANGANESE ALLOYS TO DTD 5024. |
1972 |
|
| Authors:
C. J. Peel; P. J. E. Forsyth; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
|
| Observations on the Applicability of a Rotating Mirror Camera, Especially for Investigations of Moving Self-Luminous Objects (Betrachtungen ueber die Verwendbarkeit Einer Drehspiegelkamera, Insbesondere bei Untersuchungen Bewegter Selbstleuchtender Objekt |
DEC 1971 |
|
| Authors:
K. P. Anders; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
|
| The report describes a rotating mirror camera with additional equipment, and gives values for the resolution in space and in time. Calculations have been carried out to determine the blurring that arises because of the rotation of the mirror during the exposure of the picture, and also to examine the possible errors arising in the determination of the exposure time. The report also describes various photographic techniques used in the ... |
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Reports by Corporate Author
