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1. 发明专利

GB1023303A Improvements in or relating to engine test benches 未知
公开(公告)号：GB1023303A
公开(公告)日：1966-03-23
申请号：GB4117961
申请日：1961-11-17
申请人： CURRAN JOHN LTD
发明人： WEEKLEY EDWARD ELIJAH
IPC分类号： F01D25/28 , G01L5/13 , G01M15/02
摘要： 1,023,303. Measuring engine thrust. JOHN CURRAN Ltd. Nov. 14, 1962 [Nov. 17, 1961; June 7, 1962], Nos. 41179/61 and 22005/62. Heading G1W. An engine test bench for testing the thrust of jet engines comprises an engine carrier 1 (Figs. 1, 2) on a platform 2 having two converging arms 3, 4 with a cross beam 18 and supported on a fixed base 5 by flexure straps 6, 11. A hydraulic capsule 16 is supported on post 14 fixed to the base 5, and a similar capsule 17 is fixed to the cross beam 18 of the platform 2. The capsules have movable heads, 16b and 17e (Fig. 3) respectively, which abut one another, the head 16b having an adjustable part 16e. Movement of the platform 2 by the engine thrust moves a housing 17c of the capsule 17 and reduces the volume of a chamber 17a between the head 17e and the housing 17c thus actuating a Bourdon tube instrument 19 which indicates the engine thrust. The head 16b is not displaceable by the force exerted upon movement of the platform 2 so long as the volume of a hydraulic compensating circuit (Fig. 3) remains unchanged. This circuit comprises a compensator device 21 having a variable volume chamber 22 defined by a fixed housing part 23a and a diaphragm 24 bonded to a rigid block 25. The block is bolted to a piston 26 movable in a chamber 31 in a housing part 23b and is coupled to a motor (Fig. 4 not shown). When the platform 2 moves due to the engine thrust a projection thereon engages a switch to start the motor which moves the piston 26 so as to reduce the volume of the chamber 22. Liquid is thereby forced through a pipe 140 to the space 16a which causes the head 16b to push the head 17e toward the housing 17c. But, as the housing is rigidly connected to the beam 18 of the platform 2, the platform moves to its original position from which it was moved by the engine thrust, and the relative displacement of the head 17e and housing 17c remains unchanged. During this return movement of the platform therefore the instrument 19 still indicates the engine thrust. The calibration and setting up of the test bench is described wherein a hand operated device 42 (Fig. 3) is provided which is similar to and is arranged in parallel with the device 21. Instead of the hydrostatic capsule 17 as a load cell a hydro-dynamic load cell may be used (not shown).

2. 发明专利

GB1023304A Improvements in or relating to engine test benches 未知
公开(公告)号：GB1023304A
公开(公告)日：1966-03-23
申请号：GB2933565
申请日：1961-11-17
申请人： CURRAN JOHN LTD
发明人： WEEKLEY EDWARD ELIJAH
IPC分类号： F01D25/28 , G01L5/13 , G01M15/02
摘要： 1, 023, 304. Measuring engine thrust JOHN CURRAN Ltd. Nov. 14, 1962 [Nov. 17, 1961; June 7, 1962], Nos. 29335/65 and 29336/62. Divided out of 1,023,303. Heading G1W. The subject matter of the Specification is included in the Specification (1, 023, 303) but the claims are directed mainly to the supporting arrangement of the engine and a carrier by means of flexible straps including a crossed link flexure pivot.

3. 发明专利

GB1237372A IMPROVEMENTS IN OR RELATING TO MEANS FOR MOUNTING ENGINES ON TEST BENCHES 未知
公开(公告)号：GB1237372A
公开(公告)日：1971-06-30
申请号：GB2662667
申请日：1967-06-09
申请人： CURRAN JOHN LTD
发明人： WEEKLEY EDWARD ELIJAH
IPC分类号： G01M15/02
摘要： 1,237,372. Engine test beds. JOHN CURRAN Ltd. Aug. 5, 1968 [June 9, 1967] No. 26626/67. Heading G1W. A bed supporting a gas turbine jet engine Fig. 9 under test comprises stationary and movable supports 25, 29 and connections 31, 32 acting there between comprising flexible link elements 10a, 10b, Fig.3 (not shown) arranged so that, at least under certain test conditions, one link 10a is in tension and the other 10b in compression, the latter being provided with a relatively stiff length 14 located between two relatively flexible lengths to confine the region of flexing. Both links may be stiffened, Fig. 4, they may be staggered and the common part 13 may be on the stationary or movable part. Each support connection may comprise two thin metallic straps 54, 55 Fig. 10, with their opposite ends clamped between spacer blocks 56, 57 by bolts 58 securing them to lugs 51, 52 and a frame 50 to which the engine carrier 40 is secured. The central parts of the straps 54, 55 are clamped between pairs of rigid plates 59, which are apertured to receive a sleeve 60. The ends of the sleeve 60 are connected to spigots engaged in apertures in bearing plates 61, 62 (relative to which the sleeve can be adjusted) and the plates 61, 62 are carried by a stationary base 66 frame through trunnions 64, 65. Engine thrust is measured by a load cell 68 positioned between a member 67 (secured to the frame 50 through the spacers 56, 57 and lugs 51, 52) and an anvil 69 carried by a rigid yoke 70 attached to the base 66. The lengths of each strap 54, 55 between the central spacers 59 and outer spacers 56, 57 are surrounded by stiffening plates 72, 73 connected thereto non-positively by bolts 75 arranged to connect the plates 72, 73 at points beyond the edges of the straps, the grip being insufficient to transmit tensile or compressive loading from the straps to the plates. Protective end covers may also serve as stops to limit movement should a strap break. The strap may be of 16 gauge steel sheet approximately 0À064 inches thick and of total length 30 inches, and the unit may accomodate a deflection under thrust of up to 0À02 inches or even 0À1 inches. Vertical and transverse thrusts can also be measured in apparatus with further supports mounted one on another by similar strap units for limited relative movements in the required directions. Other methods of stiffening flexible elements are envisaged and rigid links if flexibility is provided at the ends e.g. with coiled springs, leaf springs or elastomeric brushes arranged to distort angularly in shear.

4. 发明授权

US3527088A Engine test mountings 失效
标题翻译：发动机试验安装
公开(公告)号：US3527088A
公开(公告)日：1970-09-08
申请号：US3527088D
申请日：1968-08-15
申请人： CURRAN JOHN LTD
发明人： WEEKLEY EDWARD ELIJAH
IPC分类号： G01L5/13 , G01M15/02 , G01N15/00
CPC分类号： G01M15/02 , G01L5/133

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