ALR Piranha The ALR Piranha was a late 1970s project study of a lightweight multi - role combat aircraft with duck wings of the Swiss Working Group for Aerospace ( ALR ) , which acted as a maintenance and entertainment organization of the Swiss Air Force . The management of the project was Georges Bridel , an engineer at ETH Zurich . History . After the Swiss government had canceled the FFA N - 20 and the order of 100 FFA P - 16 , took the Swiss aviation industry and the ETH Zurich a last attempt for their own Swiss fighter aircraft . There should be a small fighter plane - in the same class as the F - 5 E , which the Swiss Air Force later ordered . The project study is set against the background that the equipment of air forces with modern aircraft in the 1960s and 1970s , it was becoming increasingly difficult for small states . The increase in the cost of the flight material and weapons shrank the fleet sizes and their performance in combat are questionable . In contrast to a small number of high - performance aircraft , saw a larger fleet of light aircraft in a position to defensive struggle with the army a long time to run . It should also be substantially homogeneous material stock achieved in that a pattern can be built in as many variants . This meant that the aircraft will be used for the same basic equipment for air and ground attack , reconnaissance , electronic warfare , and operational training . should be developed in a small fighter plane , with respect to the F - 5E significantly reduced size ( 20 % smaller surface ) . The ALR would have been equipped with avionics , radar , armament and engines from abroad . A 30 mm Gatling gun on the underside of the fuselage , the nose wheel would have been slightly offset . The main landing gear was designed in the style of an F - 16 . In front of the cockpit would be placed an IR seeker sensor . Air brakes are applied in the single engine version to the sides of the rear hull . In the twin - engine version of the two air brake flaps are placed on the upper fuselage near the vertical tail . A striking design feature is the high delta wing with internal fuel tanks and missile carriers at the wing tip for guided weapons in the weight class of the AIM - 9 and two wing pylons , in which the inner one is capable of taking a double weapon carrier . This can be heavy air - to - air or air - to - ground missiles , fuel tanks or air sample collection container or for the 2 - seater version of the Vista5 jammer system from Ericsson . The fuselage pylon between the main landing gear can have an external fuel tanks or a towed target container for an air - to - air and ground - to - air target practice . The ALR should be in a single engine version , powered by RB199 , EJ200 or M88 or offered a twin - engine version ( with two Larzac ) . Only the rear part of the twin engine to the single engined version would be different in the size , the arrangement of the parachute container , and the air brakes . The Swiss government was not interested in the project . There have been drawings , wind tunnel testing and flight testing in Emmen with remote - controlled model airplanes . Also , a real - size mock cockpit was created . A new concept for aircraft bunker with a rotating floordisc in the bottom for a simple handling of the aircraft in the aircraft bunker was designed . But not a prototype and none of these aircraft bunker was built . 1 . Ferranti FIN 1020nav / attack , Type 105D Laser Distance Meters , HUD Smith , Thomson - CSF Agave radar . Specifications . 2 . INS FINAS FerrantiFINAS INS 2000 Ferranti 4510 HUD , Type 105D Laser Distance Meters , Emerson APG - 69 , APG - 67 or General Electric Blue Vixen radar .