ðˈɛɹ, hiː kəntɹˈɪbjuːɾᵻd tə ðə dɪzˈaɪn ʌvðɪ ˌaɪˌeɪˈɑːɹ twˈɛnti sˈɛvən, ˈaɪɚ θˈɜːɾi sˈɛvən, ænd ˌaɪˌeɪˈɑːɹ ˈeɪɾi ˈɛɹkɹæft, ænd ɪnðə pɹədˈʌkʃən ˌʌndɚ lˈaɪsəns ʌvðɪ ˌaɪˌeɪˈɑːɹ sˈɛvənti nˈaɪn wɪð sˈeɪvɔɪəmɑːɹtʃˈɛɾi, ˈɪɾəli ænd bˌiːˈɛf wˈʌnhˈʌndɹɪd nˈaɪn wɪð mˈɛsɚʃmˌɪt, dʒˈɜːməni fˈaɪɾɚɹ ˈɛɹkɹæft.
There, he contributed to the design of the IAR 27, IAR-37, and IAR-80 aircraft, and in the production under license of the IAR 79 (with Savoia-Marchetti, Italy) and Bf 109 (with Messerschmitt, Germany) fighter aircraft.